[validation] Store version extra separator

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.clang-tidy.hash

@@ -1 +1 @@
-0c2acbc16bfb7d63571dbe7042f94f683be25e4ca8a0f158a960a94adac4b931
+f84518ea4140c194b21cc516aae05aaa0cf876ab866f89e22e91842df46333ed

.github/workflows/auto-label-pr.yml

@@ -11,51 +11,10 @@ permissions:
   contents: read
 
 env:
-  TARGET_PLATFORMS: |
-    esp32
-    esp8266
-    rp2040
-    libretiny
-    bk72xx
-    rtl87xx
-    ln882x
-    nrf52
-    host
-  PLATFORM_COMPONENTS: |
-    alarm_control_panel
-    audio_adc
-    audio_dac
-    binary_sensor
-    button
-    canbus
-    climate
-    cover
-    datetime
-    display
-    event
-    fan
-    light
-    lock
-    media_player
-    microphone
-    number
-    one_wire
-    ota
-    output
-    packet_transport
-    select
-    sensor
-    speaker
-    stepper
-    switch
-    text
-    text_sensor
-    time
-    touchscreen
-    update
-    valve
   SMALL_PR_THRESHOLD: 30
   MAX_LABELS: 15
+  TOO_BIG_THRESHOLD: 1000
+  COMPONENT_LABEL_THRESHOLD: 10
 
 jobs:
   label:
@@ -65,24 +24,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4.2.2
 
-      - name: Get changes
-        id: changes
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          # Get PR number
-          pr_number="${{ github.event.pull_request.number }}"
-
-          # Get list of changed files using gh CLI
-          files=$(gh pr diff $pr_number --name-only)
-          echo "files<<EOF" >> $GITHUB_OUTPUT
-          echo "$files" >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
-
-          # Get file stats (additions + deletions) using gh CLI
-          stats=$(gh pr view $pr_number --json files --jq '.files | map(.additions + .deletions) | add')
-          echo "total_changes=${stats:-0}" >> $GITHUB_OUTPUT
-
       - name: Generate a token
         id: generate-token
         uses: actions/create-github-app-token@v2
@@ -97,73 +38,466 @@ jobs:
           script: |
             const fs = require('fs');
 
+            // Constants
+            const SMALL_PR_THRESHOLD = parseInt('${{ env.SMALL_PR_THRESHOLD }}');
+            const MAX_LABELS = parseInt('${{ env.MAX_LABELS }}');
+            const TOO_BIG_THRESHOLD = parseInt('${{ env.TOO_BIG_THRESHOLD }}');
+            const COMPONENT_LABEL_THRESHOLD = parseInt('${{ env.COMPONENT_LABEL_THRESHOLD }}');
+            const BOT_COMMENT_MARKER = '<!-- auto-label-pr-bot -->';
+            const CODEOWNERS_MARKER = '<!-- codeowners-request -->';
+            const TOO_BIG_MARKER = '<!-- too-big-request -->';
+
+            const MANAGED_LABELS = [
+              'new-component',
+              'new-platform',
+              'new-target-platform',
+              'merging-to-release',
+              'merging-to-beta',
+              'core',
+              'small-pr',
+              'dashboard',
+              'github-actions',
+              'by-code-owner',
+              'has-tests',
+              'needs-tests',
+              'needs-docs',
+              'needs-codeowners',
+              'too-big',
+              'labeller-recheck'
+            ];
+
+            const DOCS_PR_PATTERNS = [
+              /https:\/\/github\.com\/esphome\/esphome-docs\/pull\/\d+/,
+              /esphome\/esphome-docs#\d+/
+            ];
+
+            // Global state
             const { owner, repo } = context.repo;
             const pr_number = context.issue.number;
 
-            // Get current labels
+            // Get current labels and PR data
             const { data: currentLabelsData } = await github.rest.issues.listLabelsOnIssue({
               owner,
               repo,
               issue_number: pr_number
             });
             const currentLabels = currentLabelsData.map(label => label.name);
-
-            // Define managed labels that this workflow controls
             const managedLabels = currentLabels.filter(label =>
-              label.startsWith('component: ') ||
-              [
-                'new-component',
-                'new-platform',
-                'new-target-platform',
-                'merging-to-release',
-                'merging-to-beta',
-                'core',
-                'small-pr',
-                'dashboard',
-                'github-actions',
-                'by-code-owner',
-                'has-tests',
-                'needs-tests',
-                'needs-docs',
-                'too-big',
-                'labeller-recheck'
-              ].includes(label)
+              label.startsWith('component: ') || MANAGED_LABELS.includes(label)
             );
 
+            // Check for mega-PR early - if present, skip most automatic labeling
+            const isMegaPR = currentLabels.includes('mega-pr');
+
+            // Get all PR files with automatic pagination
+            const prFiles = await github.paginate(
+              github.rest.pulls.listFiles,
+              {
+                owner,
+                repo,
+                pull_number: pr_number
+              }
+            );
+
+            // Calculate data from PR files
+            const changedFiles = prFiles.map(file => file.filename);
+            const totalChanges = prFiles.reduce((sum, file) => sum + (file.additions || 0) + (file.deletions || 0), 0);
+
             console.log('Current labels:', currentLabels.join(', '));
-            console.log('Managed labels:', managedLabels.join(', '));
-
-            // Get changed files
-            const changedFiles = `${{ steps.changes.outputs.files }}`.split('\n').filter(f => f.length > 0);
-            const totalChanges = parseInt('${{ steps.changes.outputs.total_changes }}') || 0;
-
             console.log('Changed files:', changedFiles.length);
             console.log('Total changes:', totalChanges);
+            if (isMegaPR) {
+              console.log('Mega-PR detected - applying limited labeling logic');
+            }
 
-            const labels = new Set();
+            // Fetch API data
+            async function fetchApiData() {
+              try {
+                const response = await fetch('https://data.esphome.io/components.json');
+                const componentsData = await response.json();
+                return {
+                  targetPlatforms: componentsData.target_platforms || [],
+                  platformComponents: componentsData.platform_components || []
+                };
+              } catch (error) {
+                console.log('Failed to fetch components data from API:', error.message);
+                return { targetPlatforms: [], platformComponents: [] };
+              }
+            }
 
-            // Get environment variables
-            const targetPlatforms = `${{ env.TARGET_PLATFORMS }}`.split('\n').filter(p => p.trim().length > 0).map(p => p.trim());
-            const platformComponents = `${{ env.PLATFORM_COMPONENTS }}`.split('\n').filter(p => p.trim().length > 0).map(p => p.trim());
-            const smallPrThreshold = parseInt('${{ env.SMALL_PR_THRESHOLD }}');
-            const maxLabels = parseInt('${{ env.MAX_LABELS }}');
+            // Strategy: Merge branch detection
+            async function detectMergeBranch() {
+              const labels = new Set();
+              const baseRef = context.payload.pull_request.base.ref;
 
-            // Strategy: Merge to release or beta branch
-            const baseRef = context.payload.pull_request.base.ref;
-            if (baseRef !== 'dev') {
               if (baseRef === 'release') {
                 labels.add('merging-to-release');
               } else if (baseRef === 'beta') {
                 labels.add('merging-to-beta');
               }
 
-              // When targeting non-dev branches, only use merge warning labels
-              const finalLabels = Array.from(labels);
+              return labels;
+            }
+
+            // Strategy: Component and platform labeling
+            async function detectComponentPlatforms(apiData) {
+              const labels = new Set();
+              const componentRegex = /^esphome\/components\/([^\/]+)\//;
+              const targetPlatformRegex = new RegExp(`^esphome\/components\/(${apiData.targetPlatforms.join('|')})/`);
+
+              for (const file of changedFiles) {
+                const componentMatch = file.match(componentRegex);
+                if (componentMatch) {
+                  labels.add(`component: ${componentMatch[1]}`);
+                }
+
+                const platformMatch = file.match(targetPlatformRegex);
+                if (platformMatch) {
+                  labels.add(`platform: ${platformMatch[1]}`);
+                }
+              }
+
+              return labels;
+            }
+
+            // Strategy: New component detection
+            async function detectNewComponents() {
+              const labels = new Set();
+              const addedFiles = prFiles.filter(file => file.status === 'added').map(file => file.filename);
+
+              for (const file of addedFiles) {
+                const componentMatch = file.match(/^esphome\/components\/([^\/]+)\/__init__\.py$/);
+                if (componentMatch) {
+                  try {
+                    const content = fs.readFileSync(file, 'utf8');
+                    if (content.includes('IS_TARGET_PLATFORM = True')) {
+                      labels.add('new-target-platform');
+                    }
+                  } catch (error) {
+                    console.log(`Failed to read content of ${file}:`, error.message);
+                  }
+                  labels.add('new-component');
+                }
+              }
+
+              return labels;
+            }
+
+            // Strategy: New platform detection
+            async function detectNewPlatforms(apiData) {
+              const labels = new Set();
+              const addedFiles = prFiles.filter(file => file.status === 'added').map(file => file.filename);
+
+              for (const file of addedFiles) {
+                const platformFileMatch = file.match(/^esphome\/components\/([^\/]+)\/([^\/]+)\.py$/);
+                if (platformFileMatch) {
+                  const [, component, platform] = platformFileMatch;
+                  if (apiData.platformComponents.includes(platform)) {
+                    labels.add('new-platform');
+                  }
+                }
+
+                const platformDirMatch = file.match(/^esphome\/components\/([^\/]+)\/([^\/]+)\/__init__\.py$/);
+                if (platformDirMatch) {
+                  const [, component, platform] = platformDirMatch;
+                  if (apiData.platformComponents.includes(platform)) {
+                    labels.add('new-platform');
+                  }
+                }
+              }
+
+              return labels;
+            }
+
+            // Strategy: Core files detection
+            async function detectCoreChanges() {
+              const labels = new Set();
+              const coreFiles = changedFiles.filter(file =>
+                file.startsWith('esphome/core/') ||
+                (file.startsWith('esphome/') && file.split('/').length === 2)
+              );
+
+              if (coreFiles.length > 0) {
+                labels.add('core');
+              }
+
+              return labels;
+            }
+
+            // Strategy: PR size detection
+            async function detectPRSize() {
+              const labels = new Set();
+              const testChanges = prFiles
+                .filter(file => file.filename.startsWith('tests/'))
+                .reduce((sum, file) => sum + (file.additions || 0) + (file.deletions || 0), 0);
+
+              const nonTestChanges = totalChanges - testChanges;
+
+              if (totalChanges <= SMALL_PR_THRESHOLD) {
+                labels.add('small-pr');
+              }
+
+              // Don't add too-big if mega-pr label is already present
+              if (nonTestChanges > TOO_BIG_THRESHOLD && !isMegaPR) {
+                labels.add('too-big');
+              }
+
+              return labels;
+            }
+
+            // Strategy: Dashboard changes
+            async function detectDashboardChanges() {
+              const labels = new Set();
+              const dashboardFiles = changedFiles.filter(file =>
+                file.startsWith('esphome/dashboard/') ||
+                file.startsWith('esphome/components/dashboard_import/')
+              );
+
+              if (dashboardFiles.length > 0) {
+                labels.add('dashboard');
+              }
+
+              return labels;
+            }
+
+            // Strategy: GitHub Actions changes
+            async function detectGitHubActionsChanges() {
+              const labels = new Set();
+              const githubActionsFiles = changedFiles.filter(file =>
+                file.startsWith('.github/workflows/')
+              );
+
+              if (githubActionsFiles.length > 0) {
+                labels.add('github-actions');
+              }
+
+              return labels;
+            }
+
+            // Strategy: Code owner detection
+            async function detectCodeOwner() {
+              const labels = new Set();
+
+              try {
+                const { data: codeownersFile } = await github.rest.repos.getContent({
+                  owner,
+                  repo,
+                  path: 'CODEOWNERS',
+                });
+
+                const codeownersContent = Buffer.from(codeownersFile.content, 'base64').toString('utf8');
+                const prAuthor = context.payload.pull_request.user.login;
+
+                const codeownersLines = codeownersContent.split('\n')
+                  .map(line => line.trim())
+                  .filter(line => line && !line.startsWith('#'));
+
+                const codeownersRegexes = codeownersLines.map(line => {
+                  const parts = line.split(/\s+/);
+                  const pattern = parts[0];
+                  const owners = parts.slice(1);
+
+                  let regex;
+                  if (pattern.endsWith('*')) {
+                    const dir = pattern.slice(0, -1);
+                    regex = new RegExp(`^${dir.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}`);
+                  } else if (pattern.includes('*')) {
+                    // First escape all regex special chars except *, then replace * with .*
+                    const regexPattern = pattern
+                      .replace(/[.+?^${}()|[\]\\]/g, '\\$&')
+                      .replace(/\*/g, '.*');
+                    regex = new RegExp(`^${regexPattern}$`);
+                  } else {
+                    regex = new RegExp(`^${pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}$`);
+                  }
+
+                  return { regex, owners };
+                });
+
+                for (const file of changedFiles) {
+                  for (const { regex, owners } of codeownersRegexes) {
+                    if (regex.test(file) && owners.some(owner => owner === `@${prAuthor}`)) {
+                      labels.add('by-code-owner');
+                      return labels;
+                    }
+                  }
+                }
+              } catch (error) {
+                console.log('Failed to read or parse CODEOWNERS file:', error.message);
+              }
+
+              return labels;
+            }
+
+            // Strategy: Test detection
+            async function detectTests() {
+              const labels = new Set();
+              const testFiles = changedFiles.filter(file => file.startsWith('tests/'));
+
+              if (testFiles.length > 0) {
+                labels.add('has-tests');
+              }
+
+              return labels;
+            }
+
+            // Strategy: Requirements detection
+            async function detectRequirements(allLabels) {
+              const labels = new Set();
+
+              // Check for missing tests
+              if ((allLabels.has('new-component') || allLabels.has('new-platform')) && !allLabels.has('has-tests')) {
+                labels.add('needs-tests');
+              }
+
+              // Check for missing docs
+              if (allLabels.has('new-component') || allLabels.has('new-platform')) {
+                const prBody = context.payload.pull_request.body || '';
+                const hasDocsLink = DOCS_PR_PATTERNS.some(pattern => pattern.test(prBody));
+
+                if (!hasDocsLink) {
+                  labels.add('needs-docs');
+                }
+              }
+
+              // Check for missing CODEOWNERS
+              if (allLabels.has('new-component')) {
+                const codeownersModified = prFiles.some(file =>
+                  file.filename === 'CODEOWNERS' &&
+                  (file.status === 'modified' || file.status === 'added') &&
+                  (file.additions || 0) > 0
+                );
+
+                if (!codeownersModified) {
+                  labels.add('needs-codeowners');
+                }
+              }
+
+              return labels;
+            }
+
+            // Generate review messages
+            function generateReviewMessages(finalLabels) {
+              const messages = [];
+              const prAuthor = context.payload.pull_request.user.login;
+
+              // Too big message
+              if (finalLabels.includes('too-big')) {
+                const testChanges = prFiles
+                  .filter(file => file.filename.startsWith('tests/'))
+                  .reduce((sum, file) => sum + (file.additions || 0) + (file.deletions || 0), 0);
+                const nonTestChanges = totalChanges - testChanges;
+
+                const tooManyLabels = finalLabels.length > MAX_LABELS;
+                const tooManyChanges = nonTestChanges > TOO_BIG_THRESHOLD;
+
+                let message = `${TOO_BIG_MARKER}\n### 📦 Pull Request Size\n\n`;
+
+                if (tooManyLabels && tooManyChanges) {
+                  message += `This PR is too large with ${nonTestChanges} line changes (excluding tests) and affects ${finalLabels.length} different components/areas.`;
+                } else if (tooManyLabels) {
+                  message += `This PR affects ${finalLabels.length} different components/areas.`;
+                } else {
+                  message += `This PR is too large with ${nonTestChanges} line changes (excluding tests).`;
+                }
+
+                message += ` Please consider breaking it down into smaller, focused PRs to make review easier and reduce the risk of conflicts.\n\n`;
+                message += `For guidance on breaking down large PRs, see: https://developers.esphome.io/contributing/submitting-your-work/#how-to-approach-large-submissions`;
+
+                messages.push(message);
+              }
+
+              // CODEOWNERS message
+              if (finalLabels.includes('needs-codeowners')) {
+                const message = `${CODEOWNERS_MARKER}\n### 👥 Code Ownership\n\n` +
+                  `Hey there @${prAuthor},\n` +
+                  `Thanks for submitting this pull request! Can you add yourself as a codeowner for this integration? ` +
+                  `This way we can notify you if a bug report for this integration is reported.\n\n` +
+                  `In \`__init__.py\` of the integration, please add:\n\n` +
+                  `\`\`\`python\nCODEOWNERS = ["@${prAuthor}"]\n\`\`\`\n\n` +
+                  `And run \`script/build_codeowners.py\``;
+
+                messages.push(message);
+              }
+
+              return messages;
+            }
+
+            // Handle reviews
+            async function handleReviews(finalLabels) {
+              const reviewMessages = generateReviewMessages(finalLabels);
+              const hasReviewableLabels = finalLabels.some(label =>
+                ['too-big', 'needs-codeowners'].includes(label)
+              );
+
+              const { data: reviews } = await github.rest.pulls.listReviews({
+                owner,
+                repo,
+                pull_number: pr_number
+              });
+
+              const botReviews = reviews.filter(review =>
+                review.user.type === 'Bot' &&
+                review.state === 'CHANGES_REQUESTED' &&
+                review.body && review.body.includes(BOT_COMMENT_MARKER)
+              );
+
+              if (hasReviewableLabels) {
+                const reviewBody = `${BOT_COMMENT_MARKER}\n\n${reviewMessages.join('\n\n---\n\n')}`;
+
+                if (botReviews.length > 0) {
+                  // Update existing review
+                  await github.rest.pulls.updateReview({
+                    owner,
+                    repo,
+                    pull_number: pr_number,
+                    review_id: botReviews[0].id,
+                    body: reviewBody
+                  });
+                  console.log('Updated existing bot review');
+                } else {
+                  // Create new review
+                  await github.rest.pulls.createReview({
+                    owner,
+                    repo,
+                    pull_number: pr_number,
+                    body: reviewBody,
+                    event: 'REQUEST_CHANGES'
+                  });
+                  console.log('Created new bot review');
+                }
+              } else if (botReviews.length > 0) {
+                // Dismiss existing reviews
+                for (const review of botReviews) {
+                  try {
+                    await github.rest.pulls.dismissReview({
+                      owner,
+                      repo,
+                      pull_number: pr_number,
+                      review_id: review.id,
+                      message: 'Review dismissed: All requirements have been met'
+                    });
+                    console.log(`Dismissed bot review ${review.id}`);
+                  } catch (error) {
+                    console.log(`Failed to dismiss review ${review.id}:`, error.message);
+                  }
+                }
+              }
+            }
+
+            // Main execution
+            const apiData = await fetchApiData();
+            const baseRef = context.payload.pull_request.base.ref;
+
+            // Early exit for non-dev branches
+            if (baseRef !== 'dev') {
+              const branchLabels = await detectMergeBranch();
+              const finalLabels = Array.from(branchLabels);
+
               console.log('Computed labels (merge branch only):', finalLabels.join(', '));
 
-              // Add new labels
+              // Apply labels
               if (finalLabels.length > 0) {
-                console.log(`Adding labels: ${finalLabels.join(', ')}`);
                 await github.rest.issues.addLabels({
                   owner,
                   repo,
@@ -172,13 +506,9 @@ jobs:
                 });
               }
 
-              // Remove old managed labels that are no longer needed
-              const labelsToRemove = managedLabels.filter(label =>
-                !finalLabels.includes(label)
-              );
-
+              // Remove old managed labels
+              const labelsToRemove = managedLabels.filter(label => !finalLabels.includes(label));
               for (const label of labelsToRemove) {
-                console.log(`Removing label: ${label}`);
                 try {
                   await github.rest.issues.removeLabel({
                     owner,
@@ -191,234 +521,78 @@ jobs:
                 }
               }
 
-              return; // Exit early, don't process other strategies
+              return;
             }
 
-            // Strategy: Component and Platform labeling
-            const componentRegex = /^esphome\/components\/([^\/]+)\//;
-            const targetPlatformRegex = new RegExp(`^esphome\/components\/(${targetPlatforms.join('|')})/`);
+            // Run all strategies
+            const [
+              branchLabels,
+              componentLabels,
+              newComponentLabels,
+              newPlatformLabels,
+              coreLabels,
+              sizeLabels,
+              dashboardLabels,
+              actionsLabels,
+              codeOwnerLabels,
+              testLabels
+            ] = await Promise.all([
+              detectMergeBranch(),
+              detectComponentPlatforms(apiData),
+              detectNewComponents(),
+              detectNewPlatforms(apiData),
+              detectCoreChanges(),
+              detectPRSize(),
+              detectDashboardChanges(),
+              detectGitHubActionsChanges(),
+              detectCodeOwner(),
+              detectTests()
+            ]);
 
-            for (const file of changedFiles) {
-              // Check for component changes
-              const componentMatch = file.match(componentRegex);
-              if (componentMatch) {
-                const component = componentMatch[1];
-                labels.add(`component: ${component}`);
-              }
+            // Combine all labels
+            const allLabels = new Set([
+              ...branchLabels,
+              ...componentLabels,
+              ...newComponentLabels,
+              ...newPlatformLabels,
+              ...coreLabels,
+              ...sizeLabels,
+              ...dashboardLabels,
+              ...actionsLabels,
+              ...codeOwnerLabels,
+              ...testLabels
+            ]);
 
-              // Check for target platform changes
-              const platformMatch = file.match(targetPlatformRegex);
-              if (platformMatch) {
-                const targetPlatform = platformMatch[1];
-                labels.add(`platform: ${targetPlatform}`);
+            // Detect requirements based on all other labels
+            const requirementLabels = await detectRequirements(allLabels);
+            for (const label of requirementLabels) {
+              allLabels.add(label);
+            }
+
+            let finalLabels = Array.from(allLabels);
+
+            // For mega-PRs, exclude component labels if there are too many
+            if (isMegaPR) {
+              const componentLabels = finalLabels.filter(label => label.startsWith('component: '));
+              if (componentLabels.length > COMPONENT_LABEL_THRESHOLD) {
+                finalLabels = finalLabels.filter(label => !label.startsWith('component: '));
+                console.log(`Mega-PR detected - excluding ${componentLabels.length} component labels (threshold: ${COMPONENT_LABEL_THRESHOLD})`);
               }
             }
 
-            // Get PR files for new component/platform detection
-            const { data: prFiles } = await github.rest.pulls.listFiles({
-              owner,
-              repo,
-              pull_number: pr_number
-            });
+            // Handle too many labels (only for non-mega PRs)
+            const tooManyLabels = finalLabels.length > MAX_LABELS;
 
-            const addedFiles = prFiles.filter(file => file.status === 'added').map(file => file.filename);
-
-            // Strategy: New Component detection
-            for (const file of addedFiles) {
-              // Check for new component files: esphome/components/{component}/__init__.py
-              const componentMatch = file.match(/^esphome\/components\/([^\/]+)\/__init__\.py$/);
-              if (componentMatch) {
-                try {
-                  // Read the content directly from the filesystem since we have it checked out
-                  const content = fs.readFileSync(file, 'utf8');
-
-                  // Strategy: New Target Platform detection
-                  if (content.includes('IS_TARGET_PLATFORM = True')) {
-                    labels.add('new-target-platform');
-                  }
-                  labels.add('new-component');
-                } catch (error) {
-                  console.log(`Failed to read content of ${file}:`, error.message);
-                  // Fallback: assume it's a new component if we can't read the content
-                  labels.add('new-component');
-                }
-              }
+            if (tooManyLabels && !isMegaPR && !finalLabels.includes('too-big')) {
+              finalLabels = ['too-big'];
             }
 
-            // Strategy: New Platform detection
-            for (const file of addedFiles) {
-              // Check for new platform files: esphome/components/{component}/{platform}.py
-              const platformFileMatch = file.match(/^esphome\/components\/([^\/]+)\/([^\/]+)\.py$/);
-              if (platformFileMatch) {
-                const [, component, platform] = platformFileMatch;
-                if (platformComponents.includes(platform)) {
-                  labels.add('new-platform');
-                }
-              }
-
-              // Check for new platform files: esphome/components/{component}/{platform}/__init__.py
-              const platformDirMatch = file.match(/^esphome\/components\/([^\/]+)\/([^\/]+)\/__init__\.py$/);
-              if (platformDirMatch) {
-                const [, component, platform] = platformDirMatch;
-                if (platformComponents.includes(platform)) {
-                  labels.add('new-platform');
-                }
-              }
-            }
-
-            const coreFiles = changedFiles.filter(file =>
-              file.startsWith('esphome/core/') ||
-              (file.startsWith('esphome/') && file.split('/').length === 2)
-            );
-
-            if (coreFiles.length > 0) {
-              labels.add('core');
-            }
-
-            // Strategy: Small PR detection
-            if (totalChanges <= smallPrThreshold) {
-              labels.add('small-pr');
-            }
-
-            // Strategy: Dashboard changes
-            const dashboardFiles = changedFiles.filter(file =>
-              file.startsWith('esphome/dashboard/') ||
-              file.startsWith('esphome/components/dashboard_import/')
-            );
-
-            if (dashboardFiles.length > 0) {
-              labels.add('dashboard');
-            }
-
-            // Strategy: GitHub Actions changes
-            const githubActionsFiles = changedFiles.filter(file =>
-              file.startsWith('.github/workflows/')
-            );
-
-            if (githubActionsFiles.length > 0) {
-              labels.add('github-actions');
-            }
-
-            // Strategy: Code Owner detection
-            try {
-              // Fetch CODEOWNERS file from the repository (in case it was changed in this PR)
-              const { data: codeownersFile } = await github.rest.repos.getContent({
-                owner,
-                repo,
-                path: 'CODEOWNERS',
-              });
-
-              const codeownersContent = Buffer.from(codeownersFile.content, 'base64').toString('utf8');
-              const prAuthor = context.payload.pull_request.user.login;
-
-              // Parse CODEOWNERS file
-              const codeownersLines = codeownersContent.split('\n')
-                .map(line => line.trim())
-                .filter(line => line && !line.startsWith('#'));
-
-              let isCodeOwner = false;
-
-              // Precompile CODEOWNERS patterns into regex objects
-              const codeownersRegexes = codeownersLines.map(line => {
-                const parts = line.split(/\s+/);
-                const pattern = parts[0];
-                const owners = parts.slice(1);
-
-                let regex;
-                if (pattern.endsWith('*')) {
-                  // Directory pattern like "esphome/components/api/*"
-                  const dir = pattern.slice(0, -1);
-                  regex = new RegExp(`^${dir.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}`);
-                } else if (pattern.includes('*')) {
-                  // Glob pattern
-                  const regexPattern = pattern
-                    .replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
-                    .replace(/\\*/g, '.*');
-                  regex = new RegExp(`^${regexPattern}$`);
-                } else {
-                  // Exact match
-                  regex = new RegExp(`^${pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}$`);
-                }
-
-                return { regex, owners };
-              });
-
-              for (const file of changedFiles) {
-                for (const { regex, owners } of codeownersRegexes) {
-                  if (regex.test(file)) {
-                    // Check if PR author is in the owners list
-                    if (owners.some(owner => owner === `@${prAuthor}`)) {
-                      isCodeOwner = true;
-                      break;
-                    }
-                  }
-                }
-                if (isCodeOwner) break;
-              }
-
-              if (isCodeOwner) {
-                labels.add('by-code-owner');
-              }
-            } catch (error) {
-              console.log('Failed to read or parse CODEOWNERS file:', error.message);
-            }
-
-            // Strategy: Test detection
-            const testFiles = changedFiles.filter(file =>
-              file.startsWith('tests/')
-            );
-
-            if (testFiles.length > 0) {
-              labels.add('has-tests');
-            } else {
-              // Only check for needs-tests if this is a new component or new platform
-              if (labels.has('new-component') || labels.has('new-platform')) {
-                labels.add('needs-tests');
-              }
-            }
-
-            // Strategy: Documentation check for new components/platforms
-            if (labels.has('new-component') || labels.has('new-platform')) {
-              const prBody = context.payload.pull_request.body || '';
-
-              // Look for documentation PR links
-              // Patterns to match:
-              // - https://github.com/esphome/esphome-docs/pull/1234
-              // - esphome/esphome-docs#1234
-              const docsPrPatterns = [
-                /https:\/\/github\.com\/esphome\/esphome-docs\/pull\/\d+/,
-                /esphome\/esphome-docs#\d+/
-              ];
-
-              const hasDocsLink = docsPrPatterns.some(pattern => pattern.test(prBody));
-
-              if (!hasDocsLink) {
-                labels.add('needs-docs');
-              }
-            }
-
-            // Convert Set to Array
-            let finalLabels = Array.from(labels);
-
             console.log('Computed labels:', finalLabels.join(', '));
 
-            // Don't set more than max labels
-            if (finalLabels.length > maxLabels) {
-              const originalLength = finalLabels.length;
-              console.log(`Not setting ${originalLength} labels because out of range`);
-              finalLabels = ['too-big'];
+            // Handle reviews
+            await handleReviews(finalLabels);
 
-              // Request changes on the PR
-              await github.rest.pulls.createReview({
-                owner,
-                repo,
-                pull_number: pr_number,
-                body: `This PR is too large and affects ${originalLength} different components/areas. Please consider breaking it down into smaller, focused PRs to make review easier and reduce the risk of conflicts.`,
-                event: 'REQUEST_CHANGES'
-              });
-            }
-
-            // Add new labels
+            // Apply labels
             if (finalLabels.length > 0) {
               console.log(`Adding labels: ${finalLabels.join(', ')}`);
               await github.rest.issues.addLabels({
@@ -429,11 +603,8 @@ jobs:
               });
             }
 
-            // Remove old managed labels that are no longer needed
-            const labelsToRemove = managedLabels.filter(label =>
-              !finalLabels.includes(label)
-            );
-
+            // Remove old managed labels
+            const labelsToRemove = managedLabels.filter(label => !finalLabels.includes(label));
             for (const label of labelsToRemove) {
               console.log(`Removing label: ${label}`);
               try {

.github/workflows/codeowner-review-request.yml

@@ -34,6 +34,9 @@ jobs:
 
             console.log(`Processing PR #${pr_number} for codeowner review requests`);
 
+            // Hidden marker to identify bot comments from this workflow
+            const BOT_COMMENT_MARKER = '<!-- codeowner-review-request-bot -->';
+
             try {
               // Get the list of changed files in this PR
               const { data: files } = await github.rest.pulls.listFiles({
@@ -84,9 +87,9 @@ jobs:
                 const allMentions = [...reviewerMentions, ...teamMentions].join(', ');
 
                 if (isSuccessful) {
-                  return `👋 Hi there! I've automatically requested reviews from codeowners based on the files changed in this PR.\n\n${allMentions} - You've been requested to review this PR as codeowner(s) of ${matchedFileCount} file(s) that were modified. Thanks for your time! 🙏`;
+                  return `${BOT_COMMENT_MARKER}\n👋 Hi there! I've automatically requested reviews from codeowners based on the files changed in this PR.\n\n${allMentions} - You've been requested to review this PR as codeowner(s) of ${matchedFileCount} file(s) that were modified. Thanks for your time! 🙏`;
                 } else {
-                  return `👋 Hi there! This PR modifies ${matchedFileCount} file(s) with codeowners.\n\n${allMentions} - As codeowner(s) of the affected files, your review would be appreciated! 🙏\n\n_Note: Automatic review request may have failed, but you're still welcome to review._`;
+                  return `${BOT_COMMENT_MARKER}\n👋 Hi there! This PR modifies ${matchedFileCount} file(s) with codeowners.\n\n${allMentions} - As codeowner(s) of the affected files, your review would be appreciated! 🙏\n\n_Note: Automatic review request may have failed, but you're still welcome to review._`;
                 }
               }
 
@@ -178,6 +181,53 @@ jobs:
                 reviewedUsers.add(review.user.login);
               });
 
+              // Check for previous comments from this workflow to avoid duplicate pings
+              const comments = await github.paginate(
+                github.rest.issues.listComments,
+                {
+                  owner,
+                  repo,
+                  issue_number: pr_number
+                }
+              );
+
+              const previouslyPingedUsers = new Set();
+              const previouslyPingedTeams = new Set();
+
+              // Look for comments from github-actions bot that contain our bot marker
+              const workflowComments = comments.filter(comment =>
+                comment.user.type === 'Bot' &&
+                comment.body.includes(BOT_COMMENT_MARKER)
+              );
+
+              // Extract previously mentioned users and teams from workflow comments
+              for (const comment of workflowComments) {
+                // Match @username patterns (not team mentions)
+                const userMentions = comment.body.match(/@([a-zA-Z0-9_.-]+)(?![/])/g) || [];
+                userMentions.forEach(mention => {
+                  const username = mention.slice(1); // remove @
+                  previouslyPingedUsers.add(username);
+                });
+
+                // Match @org/team patterns
+                const teamMentions = comment.body.match(/@[a-zA-Z0-9_.-]+\/([a-zA-Z0-9_.-]+)/g) || [];
+                teamMentions.forEach(mention => {
+                  const teamName = mention.split('/')[1];
+                  previouslyPingedTeams.add(teamName);
+                });
+              }
+
+              console.log(`Found ${previouslyPingedUsers.size} previously pinged users and ${previouslyPingedTeams.size} previously pinged teams`);
+
+              // Remove users who have already been pinged in previous workflow comments
+              previouslyPingedUsers.forEach(user => {
+                matchedOwners.delete(user);
+              });
+
+              previouslyPingedTeams.forEach(team => {
+                matchedTeams.delete(team);
+              });
+
               // Remove only users who have already submitted reviews (not just requested reviewers)
               reviewedUsers.forEach(reviewer => {
                 matchedOwners.delete(reviewer);
@@ -192,7 +242,7 @@ jobs:
               const teamsList = Array.from(matchedTeams);
 
               if (reviewersList.length === 0 && teamsList.length === 0) {
-                console.log('No eligible reviewers found (all may already be requested or reviewed)');
+                console.log('No eligible reviewers found (all may already be requested, reviewed, or previously pinged)');
                 return;
               }
 
@@ -227,31 +277,41 @@ jobs:
                   console.log('All codeowners are already requested reviewers or have reviewed');
                 }
 
-                // Add a comment to the PR mentioning what happened (include all matched codeowners)
-                const commentBody = createCommentBody(reviewersList, teamsList, fileMatches.size, true);
+                // Only add a comment if there are new codeowners to mention (not previously pinged)
+                if (reviewersList.length > 0 || teamsList.length > 0) {
+                  const commentBody = createCommentBody(reviewersList, teamsList, fileMatches.size, true);
 
-                await github.rest.issues.createComment({
-                  owner,
-                  repo,
-                  issue_number: pr_number,
-                  body: commentBody
-                });
+                  await github.rest.issues.createComment({
+                    owner,
+                    repo,
+                    issue_number: pr_number,
+                    body: commentBody
+                  });
+                  console.log(`Added comment mentioning ${reviewersList.length} users and ${teamsList.length} teams`);
+                } else {
+                  console.log('No new codeowners to mention in comment (all previously pinged)');
+                }
               } catch (error) {
                 if (error.status === 422) {
                   console.log('Some reviewers may already be requested or unavailable:', error.message);
 
-                  // Try to add a comment even if review request failed
-                  const commentBody = createCommentBody(reviewersList, teamsList, fileMatches.size, false);
+                  // Only try to add a comment if there are new codeowners to mention
+                  if (reviewersList.length > 0 || teamsList.length > 0) {
+                    const commentBody = createCommentBody(reviewersList, teamsList, fileMatches.size, false);
 
-                  try {
-                    await github.rest.issues.createComment({
-                      owner,
-                      repo,
-                      issue_number: pr_number,
-                      body: commentBody
-                    });
-                  } catch (commentError) {
-                    console.log('Failed to add comment:', commentError.message);
+                    try {
+                      await github.rest.issues.createComment({
+                        owner,
+                        repo,
+                        issue_number: pr_number,
+                        body: commentBody
+                      });
+                      console.log(`Added fallback comment mentioning ${reviewersList.length} users and ${teamsList.length} teams`);
+                    } catch (commentError) {
+                      console.log('Failed to add comment:', commentError.message);
+                    }
+                  } else {
+                    console.log('No new codeowners to mention in fallback comment');
                   }
                 } else {
                   throw error;

.github/workflows/external-component-bot.yml

@@ -61,7 +61,8 @@ jobs:
             }
 
             async function createComment(octokit, owner, repo, prNumber, esphomeChanges, componentChanges) {
-                const commentMarker = "<!-- This comment was generated automatically by a GitHub workflow. -->";
+                const commentMarker = "<!-- This comment was generated automatically by the external-component-bot workflow. -->";
+                const legacyCommentMarker = "<!-- This comment was generated automatically by a GitHub workflow. -->";
                 let commentBody;
                 if (esphomeChanges.length === 1) {
                     commentBody = generateExternalComponentInstructions(prNumber, componentChanges, owner, repo);
@@ -71,14 +72,23 @@ jobs:
                 commentBody += `\n\n---\n(Added by the PR bot)\n\n${commentMarker}`;
 
                 // Check for existing bot comment
-                const comments = await github.rest.issues.listComments({
-                    owner: owner,
-                    repo: repo,
-                    issue_number: prNumber,
-                });
+                const comments = await github.paginate(
+                    github.rest.issues.listComments,
+                    {
+                        owner: owner,
+                        repo: repo,
+                        issue_number: prNumber,
+                        per_page: 100,
+                    }
+                );
 
-                const botComment = comments.data.find(comment =>
-                    comment.body.includes(commentMarker)
+                const sorted = comments.sort((a, b) => new Date(b.updated_at) - new Date(a.updated_at));
+
+                const botComment = sorted.find(comment =>
+                    (
+                      comment.body.includes(commentMarker) ||
+                      comment.body.includes(legacyCommentMarker)
+                    ) && comment.user.type === "Bot"
                 );
 
                 if (botComment && botComment.body === commentBody) {

.github/workflows/issue-codeowner-notify.yml

@@ -29,6 +29,9 @@ jobs:
 
             console.log(`Processing issue #${issue_number} with label: ${labelName}`);
 
+            // Hidden marker to identify bot comments from this workflow
+            const BOT_COMMENT_MARKER = '<!-- issue-codeowner-notify-bot -->';
+
             // Extract component name from label
             const componentName = labelName.replace('component: ', '');
             console.log(`Component: ${componentName}`);
@@ -92,16 +95,57 @@ jobs:
                 mention !== `@${issueAuthor}`
               );
 
-              const allMentions = [...filteredUserOwners, ...teamOwners];
+              // Check for previous comments from this workflow to avoid duplicate pings
+              const comments = await github.paginate(
+                github.rest.issues.listComments,
+                {
+                  owner,
+                  repo,
+                  issue_number: issue_number
+                }
+              );
+
+              const previouslyPingedUsers = new Set();
+              const previouslyPingedTeams = new Set();
+
+              // Look for comments from github-actions bot that contain codeowner pings for this component
+              const workflowComments = comments.filter(comment =>
+                comment.user.type === 'Bot' &&
+                comment.body.includes(BOT_COMMENT_MARKER) &&
+                comment.body.includes(`component: ${componentName}`)
+              );
+
+              // Extract previously mentioned users and teams from workflow comments
+              for (const comment of workflowComments) {
+                // Match @username patterns (not team mentions)
+                const userMentions = comment.body.match(/@([a-zA-Z0-9_.-]+)(?![/])/g) || [];
+                userMentions.forEach(mention => {
+                  previouslyPingedUsers.add(mention); // Keep @ prefix for easy comparison
+                });
+
+                // Match @org/team patterns
+                const teamMentions = comment.body.match(/@[a-zA-Z0-9_.-]+\/[a-zA-Z0-9_.-]+/g) || [];
+                teamMentions.forEach(mention => {
+                  previouslyPingedTeams.add(mention);
+                });
+              }
+
+              console.log(`Found ${previouslyPingedUsers.size} previously pinged users and ${previouslyPingedTeams.size} previously pinged teams for component ${componentName}`);
+
+              // Remove previously pinged users and teams
+              const newUserOwners = filteredUserOwners.filter(mention => !previouslyPingedUsers.has(mention));
+              const newTeamOwners = teamOwners.filter(mention => !previouslyPingedTeams.has(mention));
+
+              const allMentions = [...newUserOwners, ...newTeamOwners];
 
               if (allMentions.length === 0) {
-                console.log('No codeowners to notify (issue author is the only codeowner)');
+                console.log('No new codeowners to notify (all previously pinged or issue author is the only codeowner)');
                 return;
               }
 
               // Create comment body
               const mentionString = allMentions.join(', ');
-              const commentBody = `👋 Hey ${mentionString}!\n\nThis issue has been labeled with \`component: ${componentName}\` and you've been identified as a codeowner of this component. Please take a look when you have a chance!\n\nThanks for maintaining this component! 🙏`;
+              const commentBody = `${BOT_COMMENT_MARKER}\n👋 Hey ${mentionString}!\n\nThis issue has been labeled with \`component: ${componentName}\` and you've been identified as a codeowner of this component. Please take a look when you have a chance!\n\nThanks for maintaining this component! 🙏`;
 
               // Post comment
               await github.rest.issues.createComment({
@@ -111,7 +155,7 @@ jobs:
                 body: commentBody
               });
 
-              console.log(`Successfully notified codeowners: ${mentionString}`);
+              console.log(`Successfully notified new codeowners: ${mentionString}`);
 
             } catch (error) {
               console.log('Failed to process codeowner notifications:', error.message);

.pre-commit-config.yaml

@@ -11,7 +11,7 @@ ci:
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.12.4
+    rev: v0.12.5
     hooks:
       # Run the linter.
       - id: ruff

CODEOWNERS

@@ -246,6 +246,7 @@ esphome/components/lcd_menu/* @numo68
 esphome/components/ld2410/* @regevbr @sebcaps
 esphome/components/ld2420/* @descipher
 esphome/components/ld2450/* @hareeshmu
+esphome/components/ld24xx/* @kbx81
 esphome/components/ledc/* @OttoWinter
 esphome/components/libretiny/* @kuba2k2
 esphome/components/libretiny_pwm/* @kuba2k2
@@ -293,6 +294,7 @@ esphome/components/microphone/* @jesserockz @kahrendt
 esphome/components/mics_4514/* @jesserockz
 esphome/components/midea/* @dudanov
 esphome/components/midea_ir/* @dudanov
+esphome/components/mipi_dsi/* @clydebarrow
 esphome/components/mipi_spi/* @clydebarrow
 esphome/components/mitsubishi/* @RubyBailey
 esphome/components/mixer/speaker/* @kahrendt

esphome/__main__.py

@@ -2,6 +2,7 @@
 import argparse
 from datetime import datetime
 import functools
+import getpass
 import importlib
 import logging
 import os
@@ -34,6 +35,7 @@ from esphome.const import (
     CONF_PORT,
     CONF_SUBSTITUTIONS,
     CONF_TOPIC,
+    ENV_NOGITIGNORE,
     PLATFORM_ESP32,
     PLATFORM_ESP8266,
     PLATFORM_RP2040,
@@ -88,9 +90,9 @@ def choose_prompt(options, purpose: str = None):
 def choose_upload_log_host(
     default, check_default, show_ota, show_mqtt, show_api, purpose: str = None
 ):
-    options = []
-    for port in get_serial_ports():
-        options.append((f"{port.path} ({port.description})", port.path))
+    options = [
+        (f"{port.path} ({port.description})", port.path) for port in get_serial_ports()
+    ]
     if default == "SERIAL":
         return choose_prompt(options, purpose=purpose)
     if (show_ota and "ota" in CORE.config) or (show_api and "api" in CORE.config):
@@ -118,9 +120,7 @@ def mqtt_logging_enabled(mqtt_config):
         return False
     if CONF_TOPIC not in log_topic:
         return False
-    if log_topic.get(CONF_LEVEL, None) == "NONE":
-        return False
-    return True
+    return log_topic.get(CONF_LEVEL, None) != "NONE"
 
 
 def get_port_type(port):
@@ -209,6 +209,9 @@ def wrap_to_code(name, comp):
 
 
 def write_cpp(config):
+    if not get_bool_env(ENV_NOGITIGNORE):
+        writer.write_gitignore()
+
     generate_cpp_contents(config)
     return write_cpp_file()
 
@@ -225,10 +228,13 @@ def generate_cpp_contents(config):
 
 
 def write_cpp_file():
-    writer.write_platformio_project()
-
     code_s = indent(CORE.cpp_main_section)
     writer.write_cpp(code_s)
+
+    from esphome.build_gen import platformio
+
+    platformio.write_project()
+
     return 0
 
 
@@ -330,7 +336,7 @@ def check_permissions(port):
             raise EsphomeError(
                 "You do not have read or write permission on the selected serial port. "
                 "To resolve this issue, you can add your user to the dialout group "
-                f"by running the following command: sudo usermod -a -G dialout {os.getlogin()}. "
+                f"by running the following command: sudo usermod -a -G dialout {getpass.getuser()}. "
                 "You will need to log out & back in or reboot to activate the new group access."
             )
 

esphome/build_gen/platformio.py

@@ -0,0 +1,102 @@
+import os
+
+from esphome.const import __version__
+from esphome.core import CORE
+from esphome.helpers import mkdir_p, read_file, write_file_if_changed
+from esphome.writer import find_begin_end, update_storage_json
+
+INI_AUTO_GENERATE_BEGIN = "; ========== AUTO GENERATED CODE BEGIN ==========="
+INI_AUTO_GENERATE_END = "; =========== AUTO GENERATED CODE END ============"
+
+INI_BASE_FORMAT = (
+    """; Auto generated code by esphome
+
+[common]
+lib_deps =
+build_flags =
+upload_flags =
+
+""",
+    """
+
+""",
+)
+
+
+def format_ini(data: dict[str, str | list[str]]) -> str:
+    content = ""
+    for key, value in sorted(data.items()):
+        if isinstance(value, list):
+            content += f"{key} =\n"
+            for x in value:
+                content += f"    {x}\n"
+        else:
+            content += f"{key} = {value}\n"
+    return content
+
+
+def get_ini_content():
+    CORE.add_platformio_option(
+        "lib_deps",
+        [x.as_lib_dep for x in CORE.platformio_libraries.values()]
+        + ["${common.lib_deps}"],
+    )
+    # Sort to avoid changing build flags order
+    CORE.add_platformio_option("build_flags", sorted(CORE.build_flags))
+
+    # Sort to avoid changing build unflags order
+    CORE.add_platformio_option("build_unflags", sorted(CORE.build_unflags))
+
+    # Add extra script for C++ flags
+    CORE.add_platformio_option("extra_scripts", [f"pre:{CXX_FLAGS_FILE_NAME}"])
+
+    content = "[platformio]\n"
+    content += f"description = ESPHome {__version__}\n"
+
+    content += f"[env:{CORE.name}]\n"
+    content += format_ini(CORE.platformio_options)
+
+    return content
+
+
+def write_ini(content):
+    update_storage_json()
+    path = CORE.relative_build_path("platformio.ini")
+
+    if os.path.isfile(path):
+        text = read_file(path)
+        content_format = find_begin_end(
+            text, INI_AUTO_GENERATE_BEGIN, INI_AUTO_GENERATE_END
+        )
+    else:
+        content_format = INI_BASE_FORMAT
+    full_file = f"{content_format[0] + INI_AUTO_GENERATE_BEGIN}\n{content}"
+    full_file += INI_AUTO_GENERATE_END + content_format[1]
+    write_file_if_changed(path, full_file)
+
+
+def write_project():
+    mkdir_p(CORE.build_path)
+
+    content = get_ini_content()
+    write_ini(content)
+
+    # Write extra script for C++ specific flags
+    write_cxx_flags_script()
+
+
+CXX_FLAGS_FILE_NAME = "cxx_flags.py"
+CXX_FLAGS_FILE_CONTENTS = """# Auto-generated ESPHome script for C++ specific compiler flags
+Import("env")
+
+# Add C++ specific flags
+"""
+
+
+def write_cxx_flags_script() -> None:
+    path = CORE.relative_build_path(CXX_FLAGS_FILE_NAME)
+    contents = CXX_FLAGS_FILE_CONTENTS
+    if not CORE.is_host:
+        contents += 'env.Append(CXXFLAGS=["-Wno-volatile"])'
+        contents += "\n"
+    write_file_if_changed(path, contents)

esphome/components/a4988/a4988.cpp

@@ -7,7 +7,6 @@ namespace a4988 {
 static const char *const TAG = "a4988.stepper";
 
 void A4988::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (this->sleep_pin_ != nullptr) {
     this->sleep_pin_->setup();
     this->sleep_pin_->digital_write(false);

esphome/components/absolute_humidity/absolute_humidity.cpp

@@ -7,8 +7,6 @@ namespace absolute_humidity {
 static const char *const TAG = "absolute_humidity.sensor";
 
 void AbsoluteHumidityComponent::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->get_name().c_str());
-
   ESP_LOGD(TAG, "  Added callback for temperature '%s'", this->temperature_sensor_->get_name().c_str());
   this->temperature_sensor_->add_on_state_callback([this](float state) { this->temperature_callback_(state); });
   if (this->temperature_sensor_->has_state()) {

esphome/components/adc/__init__.py

@@ -1,6 +1,6 @@
 from esphome import pins
 import esphome.codegen as cg
-from esphome.components.esp32 import get_esp32_variant
+from esphome.components.esp32 import VARIANT_ESP32P4, get_esp32_variant
 from esphome.components.esp32.const import (
     VARIANT_ESP32,
     VARIANT_ESP32C2,
@@ -140,6 +140,16 @@ ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
         9: adc_channel_t.ADC_CHANNEL_8,
         10: adc_channel_t.ADC_CHANNEL_9,
     },
+    VARIANT_ESP32P4: {
+        16: adc_channel_t.ADC_CHANNEL_0,
+        17: adc_channel_t.ADC_CHANNEL_1,
+        18: adc_channel_t.ADC_CHANNEL_2,
+        19: adc_channel_t.ADC_CHANNEL_3,
+        20: adc_channel_t.ADC_CHANNEL_4,
+        21: adc_channel_t.ADC_CHANNEL_5,
+        22: adc_channel_t.ADC_CHANNEL_6,
+        23: adc_channel_t.ADC_CHANNEL_7,
+    },
 }
 
 # pin to adc2 channel mapping
@@ -198,6 +208,14 @@ ESP32_VARIANT_ADC2_PIN_TO_CHANNEL = {
         19: adc_channel_t.ADC_CHANNEL_8,
         20: adc_channel_t.ADC_CHANNEL_9,
     },
+    VARIANT_ESP32P4: {
+        49: adc_channel_t.ADC_CHANNEL_0,
+        50: adc_channel_t.ADC_CHANNEL_1,
+        51: adc_channel_t.ADC_CHANNEL_2,
+        52: adc_channel_t.ADC_CHANNEL_3,
+        53: adc_channel_t.ADC_CHANNEL_4,
+        54: adc_channel_t.ADC_CHANNEL_5,
+    },
 }
 
 

esphome/components/adc/adc_sensor.h

@@ -136,8 +136,8 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
   adc_oneshot_unit_handle_t adc_handle_{nullptr};
   adc_cali_handle_t calibration_handle_{nullptr};
   adc_atten_t attenuation_{ADC_ATTEN_DB_0};
-  adc_channel_t channel_;
-  adc_unit_t adc_unit_;
+  adc_channel_t channel_{};
+  adc_unit_t adc_unit_{};
   struct SetupFlags {
     uint8_t init_complete : 1;
     uint8_t config_complete : 1;

esphome/components/adc/adc_sensor_esp32.cpp

@@ -37,7 +37,6 @@ const LogString *adc_unit_to_str(adc_unit_t unit) {
 }
 
 void ADCSensor::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->get_name().c_str());
   // Check if another sensor already initialized this ADC unit
   if (ADCSensor::shared_adc_handles[this->adc_unit_] == nullptr) {
     adc_oneshot_unit_init_cfg_t init_config = {};  // Zero initialize
@@ -73,10 +72,9 @@ void ADCSensor::setup() {
   // Initialize ADC calibration
   if (this->calibration_handle_ == nullptr) {
     adc_cali_handle_t handle = nullptr;
-    esp_err_t err;
 
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
+    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
     // RISC-V variants and S3 use curve fitting calibration
     adc_cali_curve_fitting_config_t cali_config = {};  // Zero initialize first
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
@@ -188,7 +186,7 @@ float ADCSensor::sample_fixed_attenuation_() {
       ESP_LOGW(TAG, "ADC calibration conversion failed with error %d, disabling calibration", err);
       if (this->calibration_handle_ != nullptr) {
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
+    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
         adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
 #else   // Other ESP32 variants use line fitting calibration
         adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
@@ -221,7 +219,7 @@ float ADCSensor::sample_autorange_() {
     if (this->calibration_handle_ != nullptr) {
       // Delete old calibration handle
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
+    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
       adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
 #else
       adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
@@ -233,7 +231,7 @@ float ADCSensor::sample_autorange_() {
     adc_cali_handle_t handle = nullptr;
 
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
+    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
     adc_cali_curve_fitting_config_t cali_config = {};
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
     cali_config.chan = this->channel_;
@@ -262,7 +260,7 @@ float ADCSensor::sample_autorange_() {
       ESP_LOGW(TAG, "ADC read failed in autorange with error %d", err);
       if (handle != nullptr) {
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
+    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
         adc_cali_delete_scheme_curve_fitting(handle);
 #else
         adc_cali_delete_scheme_line_fitting(handle);
@@ -282,7 +280,7 @@ float ADCSensor::sample_autorange_() {
       }
       // Clean up calibration handle
 #if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
-    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2
+    USE_ESP32_VARIANT_ESP32S3 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4
       adc_cali_delete_scheme_curve_fitting(handle);
 #else
       adc_cali_delete_scheme_line_fitting(handle);

esphome/components/adc/adc_sensor_esp8266.cpp

@@ -17,7 +17,6 @@ namespace adc {
 static const char *const TAG = "adc.esp8266";
 
 void ADCSensor::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->get_name().c_str());
 #ifndef USE_ADC_SENSOR_VCC
   this->pin_->setup();
 #endif

esphome/components/adc/adc_sensor_libretiny.cpp

@@ -9,7 +9,6 @@ namespace adc {
 static const char *const TAG = "adc.libretiny";
 
 void ADCSensor::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->get_name().c_str());
 #ifndef USE_ADC_SENSOR_VCC
   this->pin_->setup();
 #endif  // !USE_ADC_SENSOR_VCC

esphome/components/adc/adc_sensor_rp2040.cpp

@@ -14,7 +14,6 @@ namespace adc {
 static const char *const TAG = "adc.rp2040";
 
 void ADCSensor::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->get_name().c_str());
   static bool initialized = false;
   if (!initialized) {
     adc_init();

esphome/components/adc128s102/adc128s102.cpp

@@ -8,10 +8,7 @@ static const char *const TAG = "adc128s102";
 
 float ADC128S102::get_setup_priority() const { return setup_priority::HARDWARE; }
 
-void ADC128S102::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-  this->spi_setup();
-}
+void ADC128S102::setup() { this->spi_setup(); }
 
 void ADC128S102::dump_config() {
   ESP_LOGCONFIG(TAG, "ADC128S102:");

esphome/components/ads1115/ads1115.cpp

@@ -10,7 +10,6 @@ static const uint8_t ADS1115_REGISTER_CONVERSION = 0x00;
 static const uint8_t ADS1115_REGISTER_CONFIG = 0x01;
 
 void ADS1115Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint16_t value;
   if (!this->read_byte_16(ADS1115_REGISTER_CONVERSION, &value)) {
     this->mark_failed();

esphome/components/ads1118/ads1118.cpp

@@ -9,7 +9,6 @@ static const char *const TAG = "ads1118";
 static const uint8_t ADS1118_DATA_RATE_860_SPS = 0b111;
 
 void ADS1118::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   this->spi_setup();
 
   this->config_ = 0;

esphome/components/ags10/ags10.cpp

@@ -24,8 +24,6 @@ static const uint16_t ZP_CURRENT = 0x0000;
 static const uint16_t ZP_DEFAULT = 0xFFFF;
 
 void AGS10Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   auto version = this->read_version_();
   if (version) {
     ESP_LOGD(TAG, "AGS10 Sensor Version: 0x%02X", *version);
@@ -45,8 +43,6 @@ void AGS10Component::setup() {
   } else {
     ESP_LOGE(TAG, "AGS10 Sensor Resistance: unknown");
   }
-
-  ESP_LOGD(TAG, "Sensor initialized");
 }
 
 void AGS10Component::update() {

esphome/components/aht10/aht10.cpp

@@ -38,8 +38,6 @@ static const uint8_t AHT10_STATUS_BUSY = 0x80;
 static const float AHT10_DIVISOR = 1048576.0f;  // 2^20, used for temperature and humidity calculations
 
 void AHT10Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   if (this->write(AHT10_SOFTRESET_CMD, sizeof(AHT10_SOFTRESET_CMD)) != i2c::ERROR_OK) {
     ESP_LOGE(TAG, "Reset failed");
   }
@@ -80,8 +78,6 @@ void AHT10Component::setup() {
     this->mark_failed();
     return;
   }
-
-  ESP_LOGV(TAG, "Initialization complete");
 }
 
 void AHT10Component::restart_read_() {

esphome/components/aic3204/aic3204.cpp

@@ -17,8 +17,6 @@ static const char *const TAG = "aic3204";
   }
 
 void AIC3204::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   // Set register page to 0
   ERROR_CHECK(this->write_byte(AIC3204_PAGE_CTRL, 0x00), "Set page 0 failed");
   // Initiate SW reset (PLL is powered off as part of reset)

esphome/components/am2315c/am2315c.cpp

@@ -90,8 +90,6 @@ bool AM2315C::convert_(uint8_t *data, float &humidity, float &temperature) {
 }
 
 void AM2315C::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   // get status
   uint8_t status = 0;
   if (this->read(&status, 1) != i2c::ERROR_OK) {

esphome/components/am2320/am2320.cpp

@@ -34,7 +34,6 @@ void AM2320Component::update() {
   this->status_clear_warning();
 }
 void AM2320Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t data[8];
   data[0] = 0;
   data[1] = 4;

esphome/components/apds9306/apds9306.cpp

@@ -54,8 +54,6 @@ enum {  // APDS9306 registers
   }
 
 void APDS9306::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   uint8_t id;
   if (!this->read_byte(APDS9306_PART_ID, &id)) {  // Part ID register
     this->error_code_ = COMMUNICATION_FAILED;
@@ -86,8 +84,6 @@ void APDS9306::setup() {
 
   // Set to active mode
   APDS9306_WRITE_BYTE(APDS9306_MAIN_CTRL, 0x02);
-
-  ESP_LOGCONFIG(TAG, "APDS9306 setup complete");
 }
 
 void APDS9306::dump_config() {

esphome/components/apds9960/apds9960.cpp

@@ -15,7 +15,6 @@ static const char *const TAG = "apds9960";
 #define APDS9960_WRITE_BYTE(reg, value) APDS9960_ERROR_CHECK(this->write_byte(reg, value));
 
 void APDS9960::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t id;
   if (!this->read_byte(0x92, &id)) {  // ID register
     this->error_code_ = COMMUNICATION_FAILED;

esphome/components/api/__init__.py

@@ -53,6 +53,8 @@ SERVICE_ARG_NATIVE_TYPES = {
 CONF_ENCRYPTION = "encryption"
 CONF_BATCH_DELAY = "batch_delay"
 CONF_CUSTOM_SERVICES = "custom_services"
+CONF_HOMEASSISTANT_SERVICES = "homeassistant_services"
+CONF_HOMEASSISTANT_STATES = "homeassistant_states"
 
 
 def validate_encryption_key(value):
@@ -118,6 +120,8 @@ CONFIG_SCHEMA = cv.All(
                 cv.Range(max=cv.TimePeriod(milliseconds=65535)),
             ),
             cv.Optional(CONF_CUSTOM_SERVICES, default=False): cv.boolean,
+            cv.Optional(CONF_HOMEASSISTANT_SERVICES, default=False): cv.boolean,
+            cv.Optional(CONF_HOMEASSISTANT_STATES, default=False): cv.boolean,
             cv.Optional(CONF_ON_CLIENT_CONNECTED): automation.validate_automation(
                 single=True
             ),
@@ -146,6 +150,12 @@ async def to_code(config):
     if config.get(CONF_ACTIONS) or config[CONF_CUSTOM_SERVICES]:
         cg.add_define("USE_API_SERVICES")
 
+    if config[CONF_HOMEASSISTANT_SERVICES]:
+        cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
+
+    if config[CONF_HOMEASSISTANT_STATES]:
+        cg.add_define("USE_API_HOMEASSISTANT_STATES")
+
     if actions := config.get(CONF_ACTIONS, []):
         for conf in actions:
             template_args = []
@@ -235,6 +245,7 @@ HOMEASSISTANT_ACTION_ACTION_SCHEMA = cv.All(
     HOMEASSISTANT_ACTION_ACTION_SCHEMA,
 )
 async def homeassistant_service_to_code(config, action_id, template_arg, args):
+    cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
     serv = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, serv, False)
     templ = await cg.templatable(config[CONF_ACTION], args, None)
@@ -278,6 +289,7 @@ HOMEASSISTANT_EVENT_ACTION_SCHEMA = cv.Schema(
     HOMEASSISTANT_EVENT_ACTION_SCHEMA,
 )
 async def homeassistant_event_to_code(config, action_id, template_arg, args):
+    cg.add_define("USE_API_HOMEASSISTANT_SERVICES")
     serv = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, serv, True)
     templ = await cg.templatable(config[CONF_EVENT], args, None)
@@ -323,9 +335,10 @@ async def api_connected_to_code(config, condition_id, template_arg, args):
 
 
 def FILTER_SOURCE_FILES() -> list[str]:
-    """Filter out api_pb2_dump.cpp when proto message dumping is not enabled
-    and user_services.cpp when no services are defined."""
-    files_to_filter = []
+    """Filter out api_pb2_dump.cpp when proto message dumping is not enabled,
+    user_services.cpp when no services are defined, and protocol-specific
+    implementations based on encryption configuration."""
+    files_to_filter: list[str] = []
 
     # api_pb2_dump.cpp is only needed when HAS_PROTO_MESSAGE_DUMP is defined
     # This is a particularly large file that still needs to be opened and read
@@ -341,4 +354,16 @@ def FILTER_SOURCE_FILES() -> list[str]:
     if config and not config.get(CONF_ACTIONS) and not config[CONF_CUSTOM_SERVICES]:
         files_to_filter.append("user_services.cpp")
 
+    # Filter protocol-specific implementations based on encryption configuration
+    encryption_config = config.get(CONF_ENCRYPTION) if config else None
+
+    # If encryption is not configured at all, we only need plaintext
+    if encryption_config is None:
+        files_to_filter.append("api_frame_helper_noise.cpp")
+    # If encryption is configured with a key, we only need noise
+    elif encryption_config.get(CONF_KEY):
+        files_to_filter.append("api_frame_helper_plaintext.cpp")
+    # If encryption is configured but no key is provided, we need both
+    # (this allows a plaintext client to provide a noise key)
+
     return files_to_filter

esphome/components/api/api.proto

@@ -203,7 +203,7 @@ message DeviceInfoResponse {
   option (id) = 10;
   option (source) = SOURCE_SERVER;
 
-  bool uses_password = 1;
+  bool uses_password = 1 [(field_ifdef) = "USE_API_PASSWORD"];
 
   // The name of the node, given by "App.set_name()"
   string name = 2;
@@ -230,14 +230,16 @@ message DeviceInfoResponse {
 
   uint32 webserver_port = 10 [(field_ifdef) = "USE_WEBSERVER"];
 
-  uint32 legacy_bluetooth_proxy_version = 11 [(field_ifdef) = "USE_BLUETOOTH_PROXY"];
+  // Deprecated in API version 1.9
+  uint32 legacy_bluetooth_proxy_version = 11 [deprecated=true, (field_ifdef) = "USE_BLUETOOTH_PROXY"];
   uint32 bluetooth_proxy_feature_flags = 15 [(field_ifdef) = "USE_BLUETOOTH_PROXY"];
 
   string manufacturer = 12;
 
   string friendly_name = 13;
 
-  uint32 legacy_voice_assistant_version = 14 [(field_ifdef) = "USE_VOICE_ASSISTANT"];
+  // Deprecated in API version 1.10
+  uint32 legacy_voice_assistant_version = 14 [deprecated=true, (field_ifdef) = "USE_VOICE_ASSISTANT"];
   uint32 voice_assistant_feature_flags = 17 [(field_ifdef) = "USE_VOICE_ASSISTANT"];
 
   string suggested_area = 16 [(field_ifdef) = "USE_AREAS"];
@@ -337,7 +339,9 @@ message ListEntitiesCoverResponse {
   uint32 device_id = 13 [(field_ifdef) = "USE_DEVICES"];
 }
 
+// Deprecated in API version 1.1
 enum LegacyCoverState {
+  option deprecated = true;
   LEGACY_COVER_STATE_OPEN = 0;
   LEGACY_COVER_STATE_CLOSED = 1;
 }
@@ -356,7 +360,8 @@ message CoverStateResponse {
   fixed32 key = 1;
   // legacy: state has been removed in 1.13
   // clients/servers must still send/accept it until the next protocol change
-  LegacyCoverState legacy_state = 2;
+  // Deprecated in API version 1.1
+  LegacyCoverState legacy_state = 2 [deprecated=true];
 
   float position = 3;
   float tilt = 4;
@@ -364,7 +369,9 @@ message CoverStateResponse {
   uint32 device_id = 6 [(field_ifdef) = "USE_DEVICES"];
 }
 
+// Deprecated in API version 1.1
 enum LegacyCoverCommand {
+  option deprecated = true;
   LEGACY_COVER_COMMAND_OPEN = 0;
   LEGACY_COVER_COMMAND_CLOSE = 1;
   LEGACY_COVER_COMMAND_STOP = 2;
@@ -380,8 +387,10 @@ message CoverCommandRequest {
 
   // legacy: command has been removed in 1.13
   // clients/servers must still send/accept it until the next protocol change
-  bool has_legacy_command = 2;
-  LegacyCoverCommand legacy_command = 3;
+  // Deprecated in API version 1.1
+  bool has_legacy_command = 2 [deprecated=true];
+  // Deprecated in API version 1.1
+  LegacyCoverCommand legacy_command = 3 [deprecated=true];
 
   bool has_position = 4;
   float position = 5;
@@ -413,7 +422,9 @@ message ListEntitiesFanResponse {
   repeated string supported_preset_modes = 12;
   uint32 device_id = 13 [(field_ifdef) = "USE_DEVICES"];
 }
+// Deprecated in API version 1.6 - only used in deprecated fields
 enum FanSpeed {
+  option deprecated = true;
   FAN_SPEED_LOW = 0;
   FAN_SPEED_MEDIUM = 1;
   FAN_SPEED_HIGH = 2;
@@ -432,7 +443,8 @@ message FanStateResponse {
   fixed32 key = 1;
   bool state = 2;
   bool oscillating = 3;
-  FanSpeed speed = 4 [deprecated = true];
+  // Deprecated in API version 1.6
+  FanSpeed speed = 4 [deprecated=true];
   FanDirection direction = 5;
   int32 speed_level = 6;
   string preset_mode = 7;
@@ -448,8 +460,10 @@ message FanCommandRequest {
   fixed32 key = 1;
   bool has_state = 2;
   bool state = 3;
-  bool has_speed = 4 [deprecated = true];
-  FanSpeed speed = 5 [deprecated = true];
+  // Deprecated in API version 1.6
+  bool has_speed = 4 [deprecated=true];
+  // Deprecated in API version 1.6
+  FanSpeed speed = 5 [deprecated=true];
   bool has_oscillating = 6;
   bool oscillating = 7;
   bool has_direction = 8;
@@ -488,9 +502,13 @@ message ListEntitiesLightResponse {
 
   repeated ColorMode supported_color_modes = 12;
   // next four supports_* are for legacy clients, newer clients should use color modes
+  // Deprecated in API version 1.6
   bool legacy_supports_brightness = 5 [deprecated=true];
+  // Deprecated in API version 1.6
   bool legacy_supports_rgb = 6 [deprecated=true];
+  // Deprecated in API version 1.6
   bool legacy_supports_white_value = 7 [deprecated=true];
+  // Deprecated in API version 1.6
   bool legacy_supports_color_temperature = 8 [deprecated=true];
   float min_mireds = 9;
   float max_mireds = 10;
@@ -567,7 +585,9 @@ enum SensorStateClass {
   STATE_CLASS_TOTAL = 3;
 }
 
+// Deprecated in API version 1.5
 enum SensorLastResetType {
+  option deprecated = true;
   LAST_RESET_NONE = 0;
   LAST_RESET_NEVER = 1;
   LAST_RESET_AUTO = 2;
@@ -591,7 +611,8 @@ message ListEntitiesSensorResponse {
   string device_class = 9;
   SensorStateClass state_class = 10;
   // Last reset type removed in 2021.9.0
-  SensorLastResetType legacy_last_reset_type = 11;
+  // Deprecated in API version 1.5
+  SensorLastResetType legacy_last_reset_type = 11 [deprecated=true];
   bool disabled_by_default = 12;
   EntityCategory entity_category = 13;
   uint32 device_id = 14 [(field_ifdef) = "USE_DEVICES"];
@@ -711,7 +732,6 @@ message SubscribeLogsResponse {
 
   LogLevel level = 1;
   bytes message = 3;
-  bool send_failed = 4;
 }
 
 // ==================== NOISE ENCRYPTION ====================
@@ -735,17 +755,19 @@ message NoiseEncryptionSetKeyResponse {
 message SubscribeHomeassistantServicesRequest {
   option (id) = 34;
   option (source) = SOURCE_CLIENT;
+  option (ifdef) = "USE_API_HOMEASSISTANT_SERVICES";
 }
 
 message HomeassistantServiceMap {
   string key = 1;
-  string value = 2;
+  string value = 2 [(no_zero_copy) = true];
 }
 
 message HomeassistantServiceResponse {
   option (id) = 35;
   option (source) = SOURCE_SERVER;
   option (no_delay) = true;
+  option (ifdef) = "USE_API_HOMEASSISTANT_SERVICES";
 
   string service = 1;
   repeated HomeassistantServiceMap data = 2;
@@ -761,11 +783,13 @@ message HomeassistantServiceResponse {
 message SubscribeHomeAssistantStatesRequest {
   option (id) = 38;
   option (source) = SOURCE_CLIENT;
+  option (ifdef) = "USE_API_HOMEASSISTANT_STATES";
 }
 
 message SubscribeHomeAssistantStateResponse {
   option (id) = 39;
   option (source) = SOURCE_SERVER;
+  option (ifdef) = "USE_API_HOMEASSISTANT_STATES";
   string entity_id = 1;
   string attribute = 2;
   bool once = 3;
@@ -775,6 +799,7 @@ message HomeAssistantStateResponse {
   option (id) = 40;
   option (source) = SOURCE_CLIENT;
   option (no_delay) = true;
+  option (ifdef) = "USE_API_HOMEASSISTANT_STATES";
 
   string entity_id = 1;
   string state = 2;
@@ -947,7 +972,8 @@ message ListEntitiesClimateResponse {
   float visual_target_temperature_step = 10;
   // for older peer versions - in new system this
   // is if CLIMATE_PRESET_AWAY exists is supported_presets
-  bool legacy_supports_away = 11;
+  // Deprecated in API version 1.5
+  bool legacy_supports_away = 11 [deprecated=true];
   bool supports_action = 12;
   repeated ClimateFanMode supported_fan_modes = 13;
   repeated ClimateSwingMode supported_swing_modes = 14;
@@ -978,7 +1004,8 @@ message ClimateStateResponse {
   float target_temperature_low = 5;
   float target_temperature_high = 6;
   // For older peers, equal to preset == CLIMATE_PRESET_AWAY
-  bool unused_legacy_away = 7;
+  // Deprecated in API version 1.5
+  bool unused_legacy_away = 7 [deprecated=true];
   ClimateAction action = 8;
   ClimateFanMode fan_mode = 9;
   ClimateSwingMode swing_mode = 10;
@@ -1006,8 +1033,10 @@ message ClimateCommandRequest {
   bool has_target_temperature_high = 8;
   float target_temperature_high = 9;
   // legacy, for older peers, newer ones should use CLIMATE_PRESET_AWAY in preset
-  bool unused_has_legacy_away = 10;
-  bool unused_legacy_away = 11;
+  // Deprecated in API version 1.5
+  bool unused_has_legacy_away = 10 [deprecated=true];
+  // Deprecated in API version 1.5
+  bool unused_legacy_away = 11 [deprecated=true];
   bool has_fan_mode = 12;
   ClimateFanMode fan_mode = 13;
   bool has_swing_mode = 14;
@@ -1354,12 +1383,17 @@ message SubscribeBluetoothLEAdvertisementsRequest {
   uint32 flags = 1;
 }
 
+// Deprecated - only used by deprecated BluetoothLEAdvertisementResponse
 message BluetoothServiceData {
+  option deprecated = true;
   string uuid = 1;
-  repeated uint32 legacy_data = 2 [deprecated = true];  // Removed in api version 1.7
+  // Deprecated in API version 1.7
+  repeated uint32 legacy_data = 2 [deprecated=true];  // Removed in api version 1.7
   bytes data = 3;  // Added in api version 1.7
 }
+// Removed in ESPHome 2025.8.0 - use BluetoothLERawAdvertisementsResponse instead
 message BluetoothLEAdvertisementResponse {
+  option deprecated = true;
   option (id) = 67;
   option (source) = SOURCE_SERVER;
   option (ifdef) = "USE_BLUETOOTH_PROXY";
@@ -1434,19 +1468,19 @@ message BluetoothGATTGetServicesRequest {
 }
 
 message BluetoothGATTDescriptor {
-  repeated uint64 uuid = 1;
+  repeated uint64 uuid = 1 [(fixed_array_size) = 2];
   uint32 handle = 2;
 }
 
 message BluetoothGATTCharacteristic {
-  repeated uint64 uuid = 1;
+  repeated uint64 uuid = 1 [(fixed_array_size) = 2];
   uint32 handle = 2;
   uint32 properties = 3;
   repeated BluetoothGATTDescriptor descriptors = 4;
 }
 
 message BluetoothGATTService {
-  repeated uint64 uuid = 1;
+  repeated uint64 uuid = 1 [(fixed_array_size) = 2];
   uint32 handle = 2;
   repeated BluetoothGATTCharacteristic characteristics = 3;
 }
@@ -1457,7 +1491,7 @@ message BluetoothGATTGetServicesResponse {
   option (ifdef) = "USE_BLUETOOTH_PROXY";
 
   uint64 address = 1;
-  repeated BluetoothGATTService services = 2;
+  repeated BluetoothGATTService services = 2 [(fixed_array_size) = 1];
 }
 
 message BluetoothGATTGetServicesDoneResponse {

esphome/components/api/api_connection.cpp

@@ -1,5 +1,11 @@
 #include "api_connection.h"
 #ifdef USE_API
+#ifdef USE_API_NOISE
+#include "api_frame_helper_noise.h"
+#endif
+#ifdef USE_API_PLAINTEXT
+#include "api_frame_helper_plaintext.h"
+#endif
 #include <cerrno>
 #include <cinttypes>
 #include <utility>
@@ -25,8 +31,7 @@
 #include "esphome/components/voice_assistant/voice_assistant.h"
 #endif
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 // Read a maximum of 5 messages per loop iteration to prevent starving other components.
 // This is a balance between API responsiveness and allowing other components to run.
@@ -79,14 +84,16 @@ APIConnection::APIConnection(std::unique_ptr<socket::Socket> sock, APIServer *pa
 #if defined(USE_API_PLAINTEXT) && defined(USE_API_NOISE)
   auto noise_ctx = parent->get_noise_ctx();
   if (noise_ctx->has_psk()) {
-    this->helper_ = std::unique_ptr<APIFrameHelper>{new APINoiseFrameHelper(std::move(sock), noise_ctx)};
+    this->helper_ =
+        std::unique_ptr<APIFrameHelper>{new APINoiseFrameHelper(std::move(sock), noise_ctx, &this->client_info_)};
   } else {
-    this->helper_ = std::unique_ptr<APIFrameHelper>{new APIPlaintextFrameHelper(std::move(sock))};
+    this->helper_ = std::unique_ptr<APIFrameHelper>{new APIPlaintextFrameHelper(std::move(sock), &this->client_info_)};
   }
 #elif defined(USE_API_PLAINTEXT)
-  this->helper_ = std::unique_ptr<APIFrameHelper>{new APIPlaintextFrameHelper(std::move(sock))};
+  this->helper_ = std::unique_ptr<APIFrameHelper>{new APIPlaintextFrameHelper(std::move(sock), &this->client_info_)};
 #elif defined(USE_API_NOISE)
-  this->helper_ = std::unique_ptr<APIFrameHelper>{new APINoiseFrameHelper(std::move(sock), parent->get_noise_ctx())};
+  this->helper_ = std::unique_ptr<APIFrameHelper>{
+      new APINoiseFrameHelper(std::move(sock), parent->get_noise_ctx(), &this->client_info_)};
 #else
 #error "No frame helper defined"
 #endif
@@ -109,9 +116,8 @@ void APIConnection::start() {
              errno);
     return;
   }
-  this->client_info_ = helper_->getpeername();
-  this->client_peername_ = this->client_info_;
-  this->helper_->set_log_info(this->client_info_);
+  this->client_info_.peername = helper_->getpeername();
+  this->client_info_.name = this->client_info_.peername;
 }
 
 APIConnection::~APIConnection() {
@@ -218,24 +224,16 @@ void APIConnection::loop() {
   if (this->image_reader_ && this->image_reader_->available() && this->helper_->can_write_without_blocking()) {
     uint32_t to_send = std::min((size_t) MAX_BATCH_PACKET_SIZE, this->image_reader_->available());
     bool done = this->image_reader_->available() == to_send;
-    uint32_t msg_size = 0;
-    ProtoSize::add_fixed_field<4>(msg_size, 1, true);
-    // partial message size calculated manually since its a special case
-    // 1 for the data field, varint for the data size, and the data itself
-    msg_size += 1 + ProtoSize::varint(to_send) + to_send;
-    ProtoSize::add_bool_field(msg_size, 1, done);
 
-    auto buffer = this->create_buffer(msg_size);
-    // fixed32 key = 1;
-    buffer.encode_fixed32(1, camera::Camera::instance()->get_object_id_hash());
-    // bytes data = 2;
-    buffer.encode_bytes(2, this->image_reader_->peek_data_buffer(), to_send);
-    // bool done = 3;
-    buffer.encode_bool(3, done);
+    CameraImageResponse msg;
+    msg.key = camera::Camera::instance()->get_object_id_hash();
+    msg.set_data(this->image_reader_->peek_data_buffer(), to_send);
+    msg.done = done;
+#ifdef USE_DEVICES
+    msg.device_id = camera::Camera::instance()->get_device_id();
+#endif
 
-    bool success = this->send_buffer(buffer, CameraImageResponse::MESSAGE_TYPE);
-
-    if (success) {
+    if (this->send_message_(msg, CameraImageResponse::MESSAGE_TYPE)) {
       this->image_reader_->consume_data(to_send);
       if (done) {
         this->image_reader_->return_image();
@@ -244,31 +242,21 @@ void APIConnection::loop() {
   }
 #endif
 
+#ifdef USE_API_HOMEASSISTANT_STATES
   if (state_subs_at_ >= 0) {
-    const auto &subs = this->parent_->get_state_subs();
-    if (state_subs_at_ < static_cast<int>(subs.size())) {
-      auto &it = subs[state_subs_at_];
-      SubscribeHomeAssistantStateResponse resp;
-      resp.entity_id = it.entity_id;
-      resp.attribute = it.attribute.value();
-      resp.once = it.once;
-      if (this->send_message(resp, SubscribeHomeAssistantStateResponse::MESSAGE_TYPE)) {
-        state_subs_at_++;
-      }
-    } else {
-      state_subs_at_ = -1;
-    }
+    this->process_state_subscriptions_();
   }
+#endif
 }
 
-DisconnectResponse APIConnection::disconnect(const DisconnectRequest &msg) {
+bool APIConnection::send_disconnect_response(const DisconnectRequest &msg) {
   // remote initiated disconnect_client
   // don't close yet, we still need to send the disconnect response
   // close will happen on next loop
   ESP_LOGD(TAG, "%s disconnected", this->get_client_combined_info().c_str());
   this->flags_.next_close = true;
   DisconnectResponse resp;
-  return resp;
+  return this->send_message(resp, DisconnectResponse::MESSAGE_TYPE);
 }
 void APIConnection::on_disconnect_response(const DisconnectResponse &value) {
   this->helper_->close();
@@ -288,8 +276,9 @@ uint16_t APIConnection::encode_message_to_buffer(ProtoMessage &msg, uint8_t mess
 #endif
 
   // Calculate size
-  uint32_t calculated_size = 0;
-  msg.calculate_size(calculated_size);
+  ProtoSize size_calc;
+  msg.calculate_size(size_calc);
+  uint32_t calculated_size = size_calc.get_size();
 
   // Cache frame sizes to avoid repeated virtual calls
   const uint8_t header_padding = conn->helper_->frame_header_padding();
@@ -345,7 +334,7 @@ uint16_t APIConnection::try_send_binary_sensor_info(EntityBase *entity, APIConne
                                                     bool is_single) {
   auto *binary_sensor = static_cast<binary_sensor::BinarySensor *>(entity);
   ListEntitiesBinarySensorResponse msg;
-  msg.device_class = binary_sensor->get_device_class();
+  msg.set_device_class(binary_sensor->get_device_class_ref());
   msg.is_status_binary_sensor = binary_sensor->is_status_binary_sensor();
   return fill_and_encode_entity_info(binary_sensor, msg, ListEntitiesBinarySensorResponse::MESSAGE_TYPE, conn,
                                      remaining_size, is_single);
@@ -362,8 +351,6 @@ uint16_t APIConnection::try_send_cover_state(EntityBase *entity, APIConnection *
   auto *cover = static_cast<cover::Cover *>(entity);
   CoverStateResponse msg;
   auto traits = cover->get_traits();
-  msg.legacy_state =
-      (cover->position == cover::COVER_OPEN) ? enums::LEGACY_COVER_STATE_OPEN : enums::LEGACY_COVER_STATE_CLOSED;
   msg.position = cover->position;
   if (traits.get_supports_tilt())
     msg.tilt = cover->tilt;
@@ -379,25 +366,12 @@ uint16_t APIConnection::try_send_cover_info(EntityBase *entity, APIConnection *c
   msg.supports_position = traits.get_supports_position();
   msg.supports_tilt = traits.get_supports_tilt();
   msg.supports_stop = traits.get_supports_stop();
-  msg.device_class = cover->get_device_class();
+  msg.set_device_class(cover->get_device_class_ref());
   return fill_and_encode_entity_info(cover, msg, ListEntitiesCoverResponse::MESSAGE_TYPE, conn, remaining_size,
                                      is_single);
 }
 void APIConnection::cover_command(const CoverCommandRequest &msg) {
   ENTITY_COMMAND_MAKE_CALL(cover::Cover, cover, cover)
-  if (msg.has_legacy_command) {
-    switch (msg.legacy_command) {
-      case enums::LEGACY_COVER_COMMAND_OPEN:
-        call.set_command_open();
-        break;
-      case enums::LEGACY_COVER_COMMAND_CLOSE:
-        call.set_command_close();
-        break;
-      case enums::LEGACY_COVER_COMMAND_STOP:
-        call.set_command_stop();
-        break;
-    }
-  }
   if (msg.has_position)
     call.set_position(msg.position);
   if (msg.has_tilt)
@@ -427,7 +401,7 @@ uint16_t APIConnection::try_send_fan_state(EntityBase *entity, APIConnection *co
   if (traits.supports_direction())
     msg.direction = static_cast<enums::FanDirection>(fan->direction);
   if (traits.supports_preset_modes())
-    msg.preset_mode = fan->preset_mode;
+    msg.set_preset_mode(StringRef(fan->preset_mode));
   return fill_and_encode_entity_state(fan, msg, FanStateResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
 uint16_t APIConnection::try_send_fan_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
@@ -484,8 +458,11 @@ uint16_t APIConnection::try_send_light_state(EntityBase *entity, APIConnection *
   resp.color_temperature = values.get_color_temperature();
   resp.cold_white = values.get_cold_white();
   resp.warm_white = values.get_warm_white();
-  if (light->supports_effects())
-    resp.effect = light->get_effect_name();
+  if (light->supports_effects()) {
+    // get_effect_name() returns temporary std::string - must store it
+    std::string effect_name = light->get_effect_name();
+    resp.set_effect(StringRef(effect_name));
+  }
   return fill_and_encode_entity_state(light, resp, LightStateResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
 uint16_t APIConnection::try_send_light_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size,
@@ -495,14 +472,8 @@ uint16_t APIConnection::try_send_light_info(EntityBase *entity, APIConnection *c
   auto traits = light->get_traits();
   for (auto mode : traits.get_supported_color_modes())
     msg.supported_color_modes.push_back(static_cast<enums::ColorMode>(mode));
-  msg.legacy_supports_brightness = traits.supports_color_capability(light::ColorCapability::BRIGHTNESS);
-  msg.legacy_supports_rgb = traits.supports_color_capability(light::ColorCapability::RGB);
-  msg.legacy_supports_white_value =
-      msg.legacy_supports_rgb && (traits.supports_color_capability(light::ColorCapability::WHITE) ||
-                                  traits.supports_color_capability(light::ColorCapability::COLD_WARM_WHITE));
-  msg.legacy_supports_color_temperature = traits.supports_color_capability(light::ColorCapability::COLOR_TEMPERATURE) ||
-                                          traits.supports_color_capability(light::ColorCapability::COLD_WARM_WHITE);
-  if (msg.legacy_supports_color_temperature) {
+  if (traits.supports_color_capability(light::ColorCapability::COLOR_TEMPERATURE) ||
+      traits.supports_color_capability(light::ColorCapability::COLD_WARM_WHITE)) {
     msg.min_mireds = traits.get_min_mireds();
     msg.max_mireds = traits.get_max_mireds();
   }
@@ -567,10 +538,10 @@ uint16_t APIConnection::try_send_sensor_info(EntityBase *entity, APIConnection *
                                              bool is_single) {
   auto *sensor = static_cast<sensor::Sensor *>(entity);
   ListEntitiesSensorResponse msg;
-  msg.unit_of_measurement = sensor->get_unit_of_measurement();
+  msg.set_unit_of_measurement(sensor->get_unit_of_measurement_ref());
   msg.accuracy_decimals = sensor->get_accuracy_decimals();
   msg.force_update = sensor->get_force_update();
-  msg.device_class = sensor->get_device_class();
+  msg.set_device_class(sensor->get_device_class_ref());
   msg.state_class = static_cast<enums::SensorStateClass>(sensor->get_state_class());
   return fill_and_encode_entity_info(sensor, msg, ListEntitiesSensorResponse::MESSAGE_TYPE, conn, remaining_size,
                                      is_single);
@@ -597,7 +568,7 @@ uint16_t APIConnection::try_send_switch_info(EntityBase *entity, APIConnection *
   auto *a_switch = static_cast<switch_::Switch *>(entity);
   ListEntitiesSwitchResponse msg;
   msg.assumed_state = a_switch->assumed_state();
-  msg.device_class = a_switch->get_device_class();
+  msg.set_device_class(a_switch->get_device_class_ref());
   return fill_and_encode_entity_info(a_switch, msg, ListEntitiesSwitchResponse::MESSAGE_TYPE, conn, remaining_size,
                                      is_single);
 }
@@ -622,7 +593,7 @@ uint16_t APIConnection::try_send_text_sensor_state(EntityBase *entity, APIConnec
                                                    bool is_single) {
   auto *text_sensor = static_cast<text_sensor::TextSensor *>(entity);
   TextSensorStateResponse resp;
-  resp.state = text_sensor->state;
+  resp.set_state(StringRef(text_sensor->state));
   resp.missing_state = !text_sensor->has_state();
   return fill_and_encode_entity_state(text_sensor, resp, TextSensorStateResponse::MESSAGE_TYPE, conn, remaining_size,
                                       is_single);
@@ -631,7 +602,7 @@ uint16_t APIConnection::try_send_text_sensor_info(EntityBase *entity, APIConnect
                                                   bool is_single) {
   auto *text_sensor = static_cast<text_sensor::TextSensor *>(entity);
   ListEntitiesTextSensorResponse msg;
-  msg.device_class = text_sensor->get_device_class();
+  msg.set_device_class(text_sensor->get_device_class_ref());
   return fill_and_encode_entity_info(text_sensor, msg, ListEntitiesTextSensorResponse::MESSAGE_TYPE, conn,
                                      remaining_size, is_single);
 }
@@ -659,13 +630,15 @@ uint16_t APIConnection::try_send_climate_state(EntityBase *entity, APIConnection
   }
   if (traits.get_supports_fan_modes() && climate->fan_mode.has_value())
     resp.fan_mode = static_cast<enums::ClimateFanMode>(climate->fan_mode.value());
-  if (!traits.get_supported_custom_fan_modes().empty() && climate->custom_fan_mode.has_value())
-    resp.custom_fan_mode = climate->custom_fan_mode.value();
+  if (!traits.get_supported_custom_fan_modes().empty() && climate->custom_fan_mode.has_value()) {
+    resp.set_custom_fan_mode(StringRef(climate->custom_fan_mode.value()));
+  }
   if (traits.get_supports_presets() && climate->preset.has_value()) {
     resp.preset = static_cast<enums::ClimatePreset>(climate->preset.value());
   }
-  if (!traits.get_supported_custom_presets().empty() && climate->custom_preset.has_value())
-    resp.custom_preset = climate->custom_preset.value();
+  if (!traits.get_supported_custom_presets().empty() && climate->custom_preset.has_value()) {
+    resp.set_custom_preset(StringRef(climate->custom_preset.value()));
+  }
   if (traits.get_supports_swing_modes())
     resp.swing_mode = static_cast<enums::ClimateSwingMode>(climate->swing_mode);
   if (traits.get_supports_current_humidity())
@@ -692,7 +665,6 @@ uint16_t APIConnection::try_send_climate_info(EntityBase *entity, APIConnection
   msg.visual_current_temperature_step = traits.get_visual_current_temperature_step();
   msg.visual_min_humidity = traits.get_visual_min_humidity();
   msg.visual_max_humidity = traits.get_visual_max_humidity();
-  msg.legacy_supports_away = traits.supports_preset(climate::CLIMATE_PRESET_AWAY);
   msg.supports_action = traits.get_supports_action();
   for (auto fan_mode : traits.get_supported_fan_modes())
     msg.supported_fan_modes.push_back(static_cast<enums::ClimateFanMode>(fan_mode));
@@ -752,9 +724,9 @@ uint16_t APIConnection::try_send_number_info(EntityBase *entity, APIConnection *
                                              bool is_single) {
   auto *number = static_cast<number::Number *>(entity);
   ListEntitiesNumberResponse msg;
-  msg.unit_of_measurement = number->traits.get_unit_of_measurement();
+  msg.set_unit_of_measurement(number->traits.get_unit_of_measurement_ref());
   msg.mode = static_cast<enums::NumberMode>(number->traits.get_mode());
-  msg.device_class = number->traits.get_device_class();
+  msg.set_device_class(number->traits.get_device_class_ref());
   msg.min_value = number->traits.get_min_value();
   msg.max_value = number->traits.get_max_value();
   msg.step = number->traits.get_step();
@@ -867,7 +839,7 @@ uint16_t APIConnection::try_send_text_state(EntityBase *entity, APIConnection *c
                                             bool is_single) {
   auto *text = static_cast<text::Text *>(entity);
   TextStateResponse resp;
-  resp.state = text->state;
+  resp.set_state(StringRef(text->state));
   resp.missing_state = !text->has_state();
   return fill_and_encode_entity_state(text, resp, TextStateResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
@@ -879,7 +851,7 @@ uint16_t APIConnection::try_send_text_info(EntityBase *entity, APIConnection *co
   msg.mode = static_cast<enums::TextMode>(text->traits.get_mode());
   msg.min_length = text->traits.get_min_length();
   msg.max_length = text->traits.get_max_length();
-  msg.pattern = text->traits.get_pattern();
+  msg.set_pattern(text->traits.get_pattern_ref());
   return fill_and_encode_entity_info(text, msg, ListEntitiesTextResponse::MESSAGE_TYPE, conn, remaining_size,
                                      is_single);
 }
@@ -900,7 +872,7 @@ uint16_t APIConnection::try_send_select_state(EntityBase *entity, APIConnection
                                               bool is_single) {
   auto *select = static_cast<select::Select *>(entity);
   SelectStateResponse resp;
-  resp.state = select->state;
+  resp.set_state(StringRef(select->state));
   resp.missing_state = !select->has_state();
   return fill_and_encode_entity_state(select, resp, SelectStateResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
@@ -926,7 +898,7 @@ uint16_t APIConnection::try_send_button_info(EntityBase *entity, APIConnection *
                                              bool is_single) {
   auto *button = static_cast<button::Button *>(entity);
   ListEntitiesButtonResponse msg;
-  msg.device_class = button->get_device_class();
+  msg.set_device_class(button->get_device_class_ref());
   return fill_and_encode_entity_info(button, msg, ListEntitiesButtonResponse::MESSAGE_TYPE, conn, remaining_size,
                                      is_single);
 }
@@ -995,7 +967,7 @@ uint16_t APIConnection::try_send_valve_info(EntityBase *entity, APIConnection *c
   auto *valve = static_cast<valve::Valve *>(entity);
   ListEntitiesValveResponse msg;
   auto traits = valve->get_traits();
-  msg.device_class = valve->get_device_class();
+  msg.set_device_class(valve->get_device_class_ref());
   msg.assumed_state = traits.get_is_assumed_state();
   msg.supports_position = traits.get_supports_position();
   msg.supports_stop = traits.get_supports_stop();
@@ -1037,13 +1009,13 @@ uint16_t APIConnection::try_send_media_player_info(EntityBase *entity, APIConnec
   auto traits = media_player->get_traits();
   msg.supports_pause = traits.get_supports_pause();
   for (auto &supported_format : traits.get_supported_formats()) {
-    MediaPlayerSupportedFormat media_format;
-    media_format.format = supported_format.format;
+    msg.supported_formats.emplace_back();
+    auto &media_format = msg.supported_formats.back();
+    media_format.set_format(StringRef(supported_format.format));
     media_format.sample_rate = supported_format.sample_rate;
     media_format.num_channels = supported_format.num_channels;
     media_format.purpose = static_cast<enums::MediaPlayerFormatPurpose>(supported_format.purpose);
     media_format.sample_bytes = supported_format.sample_bytes;
-    msg.supported_formats.push_back(media_format);
   }
   return fill_and_encode_entity_info(media_player, msg, ListEntitiesMediaPlayerResponse::MESSAGE_TYPE, conn,
                                      remaining_size, is_single);
@@ -1106,6 +1078,12 @@ void APIConnection::on_get_time_response(const GetTimeResponse &value) {
 }
 #endif
 
+bool APIConnection::send_get_time_response(const GetTimeRequest &msg) {
+  GetTimeResponse resp;
+  resp.epoch_seconds = ::time(nullptr);
+  return this->send_message(resp, GetTimeResponse::MESSAGE_TYPE);
+}
+
 #ifdef USE_BLUETOOTH_PROXY
 void APIConnection::subscribe_bluetooth_le_advertisements(const SubscribeBluetoothLEAdvertisementsRequest &msg) {
   bluetooth_proxy::global_bluetooth_proxy->subscribe_api_connection(this, msg.flags);
@@ -1113,21 +1091,6 @@ void APIConnection::subscribe_bluetooth_le_advertisements(const SubscribeBluetoo
 void APIConnection::unsubscribe_bluetooth_le_advertisements(const UnsubscribeBluetoothLEAdvertisementsRequest &msg) {
   bluetooth_proxy::global_bluetooth_proxy->unsubscribe_api_connection(this);
 }
-bool APIConnection::send_bluetooth_le_advertisement(const BluetoothLEAdvertisementResponse &msg) {
-  if (this->client_api_version_major_ < 1 || this->client_api_version_minor_ < 7) {
-    BluetoothLEAdvertisementResponse resp = msg;
-    for (auto &service : resp.service_data) {
-      service.legacy_data.assign(service.data.begin(), service.data.end());
-      service.data.clear();
-    }
-    for (auto &manufacturer_data : resp.manufacturer_data) {
-      manufacturer_data.legacy_data.assign(manufacturer_data.data.begin(), manufacturer_data.data.end());
-      manufacturer_data.data.clear();
-    }
-    return this->send_message(resp, BluetoothLEAdvertisementResponse::MESSAGE_TYPE);
-  }
-  return this->send_message(msg, BluetoothLEAdvertisementResponse::MESSAGE_TYPE);
-}
 void APIConnection::bluetooth_device_request(const BluetoothDeviceRequest &msg) {
   bluetooth_proxy::global_bluetooth_proxy->bluetooth_device_request(msg);
 }
@@ -1151,12 +1114,12 @@ void APIConnection::bluetooth_gatt_notify(const BluetoothGATTNotifyRequest &msg)
   bluetooth_proxy::global_bluetooth_proxy->bluetooth_gatt_notify(msg);
 }
 
-BluetoothConnectionsFreeResponse APIConnection::subscribe_bluetooth_connections_free(
+bool APIConnection::send_subscribe_bluetooth_connections_free_response(
     const SubscribeBluetoothConnectionsFreeRequest &msg) {
   BluetoothConnectionsFreeResponse resp;
   resp.free = bluetooth_proxy::global_bluetooth_proxy->get_bluetooth_connections_free();
   resp.limit = bluetooth_proxy::global_bluetooth_proxy->get_bluetooth_connections_limit();
-  return resp;
+  return this->send_message(resp, BluetoothConnectionsFreeResponse::MESSAGE_TYPE);
 }
 
 void APIConnection::bluetooth_scanner_set_mode(const BluetoothScannerSetModeRequest &msg) {
@@ -1217,28 +1180,27 @@ void APIConnection::on_voice_assistant_announce_request(const VoiceAssistantAnno
   }
 }
 
-VoiceAssistantConfigurationResponse APIConnection::voice_assistant_get_configuration(
-    const VoiceAssistantConfigurationRequest &msg) {
+bool APIConnection::send_voice_assistant_get_configuration_response(const VoiceAssistantConfigurationRequest &msg) {
   VoiceAssistantConfigurationResponse resp;
   if (!this->check_voice_assistant_api_connection_()) {
-    return resp;
+    return this->send_message(resp, VoiceAssistantConfigurationResponse::MESSAGE_TYPE);
   }
 
   auto &config = voice_assistant::global_voice_assistant->get_configuration();
   for (auto &wake_word : config.available_wake_words) {
-    VoiceAssistantWakeWord resp_wake_word;
-    resp_wake_word.id = wake_word.id;
-    resp_wake_word.wake_word = wake_word.wake_word;
+    resp.available_wake_words.emplace_back();
+    auto &resp_wake_word = resp.available_wake_words.back();
+    resp_wake_word.set_id(StringRef(wake_word.id));
+    resp_wake_word.set_wake_word(StringRef(wake_word.wake_word));
     for (const auto &lang : wake_word.trained_languages) {
       resp_wake_word.trained_languages.push_back(lang);
     }
-    resp.available_wake_words.push_back(std::move(resp_wake_word));
   }
   for (auto &wake_word_id : config.active_wake_words) {
     resp.active_wake_words.push_back(wake_word_id);
   }
   resp.max_active_wake_words = config.max_active_wake_words;
-  return resp;
+  return this->send_message(resp, VoiceAssistantConfigurationResponse::MESSAGE_TYPE);
 }
 
 void APIConnection::voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) {
@@ -1311,7 +1273,7 @@ void APIConnection::send_event(event::Event *event, const std::string &event_typ
 uint16_t APIConnection::try_send_event_response(event::Event *event, const std::string &event_type, APIConnection *conn,
                                                 uint32_t remaining_size, bool is_single) {
   EventResponse resp;
-  resp.event_type = event_type;
+  resp.set_event_type(StringRef(event_type));
   return fill_and_encode_entity_state(event, resp, EventResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
 
@@ -1319,7 +1281,7 @@ uint16_t APIConnection::try_send_event_info(EntityBase *entity, APIConnection *c
                                             bool is_single) {
   auto *event = static_cast<event::Event *>(entity);
   ListEntitiesEventResponse msg;
-  msg.device_class = event->get_device_class();
+  msg.set_device_class(event->get_device_class_ref());
   for (const auto &event_type : event->get_event_types())
     msg.event_types.push_back(event_type);
   return fill_and_encode_entity_info(event, msg, ListEntitiesEventResponse::MESSAGE_TYPE, conn, remaining_size,
@@ -1343,11 +1305,11 @@ uint16_t APIConnection::try_send_update_state(EntityBase *entity, APIConnection
       resp.has_progress = true;
       resp.progress = update->update_info.progress;
     }
-    resp.current_version = update->update_info.current_version;
-    resp.latest_version = update->update_info.latest_version;
-    resp.title = update->update_info.title;
-    resp.release_summary = update->update_info.summary;
-    resp.release_url = update->update_info.release_url;
+    resp.set_current_version(StringRef(update->update_info.current_version));
+    resp.set_latest_version(StringRef(update->update_info.latest_version));
+    resp.set_title(StringRef(update->update_info.title));
+    resp.set_release_summary(StringRef(update->update_info.summary));
+    resp.set_release_url(StringRef(update->update_info.release_url));
   }
   return fill_and_encode_entity_state(update, resp, UpdateStateResponse::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
@@ -1355,7 +1317,7 @@ uint16_t APIConnection::try_send_update_info(EntityBase *entity, APIConnection *
                                              bool is_single) {
   auto *update = static_cast<update::UpdateEntity *>(entity);
   ListEntitiesUpdateResponse msg;
-  msg.device_class = update->get_device_class();
+  msg.set_device_class(update->get_device_class_ref());
   return fill_and_encode_entity_info(update, msg, ListEntitiesUpdateResponse::MESSAGE_TYPE, conn, remaining_size,
                                      is_single);
 }
@@ -1380,26 +1342,10 @@ void APIConnection::update_command(const UpdateCommandRequest &msg) {
 #endif
 
 bool APIConnection::try_send_log_message(int level, const char *tag, const char *line, size_t message_len) {
-  // Pre-calculate message size to avoid reallocations
-  uint32_t msg_size = 0;
-
-  // Add size for level field (field ID 1, varint type)
-  // 1 byte for field tag + size of the level varint
-  msg_size += 1 + api::ProtoSize::varint(static_cast<uint32_t>(level));
-
-  // Add size for string field (field ID 3, string type)
-  // 1 byte for field tag + size of length varint + string length
-  msg_size += 1 + api::ProtoSize::varint(static_cast<uint32_t>(message_len)) + message_len;
-
-  // Create a pre-sized buffer
-  auto buffer = this->create_buffer(msg_size);
-
-  // Encode the message (SubscribeLogsResponse)
-  buffer.encode_uint32(1, static_cast<uint32_t>(level));  // LogLevel level = 1
-  buffer.encode_string(3, line, message_len);             // string message = 3
-
-  // SubscribeLogsResponse - 29
-  return this->send_buffer(buffer, SubscribeLogsResponse::MESSAGE_TYPE);
+  SubscribeLogsResponse msg;
+  msg.level = static_cast<enums::LogLevel>(level);
+  msg.set_message(reinterpret_cast<const uint8_t *>(line), message_len);
+  return this->send_message_(msg, SubscribeLogsResponse::MESSAGE_TYPE);
 }
 
 void APIConnection::complete_authentication_() {
@@ -1411,7 +1357,7 @@ void APIConnection::complete_authentication_() {
   this->flags_.connection_state = static_cast<uint8_t>(ConnectionState::AUTHENTICATED);
   ESP_LOGD(TAG, "%s connected", this->get_client_combined_info().c_str());
 #ifdef USE_API_CLIENT_CONNECTED_TRIGGER
-  this->parent_->get_client_connected_trigger()->trigger(this->client_info_, this->client_peername_);
+  this->parent_->get_client_connected_trigger()->trigger(this->client_info_.name, this->client_info_.peername);
 #endif
 #ifdef USE_HOMEASSISTANT_TIME
   if (homeassistant::global_homeassistant_time != nullptr) {
@@ -1420,20 +1366,21 @@ void APIConnection::complete_authentication_() {
 #endif
 }
 
-HelloResponse APIConnection::hello(const HelloRequest &msg) {
-  this->client_info_ = msg.client_info;
-  this->client_peername_ = this->helper_->getpeername();
-  this->helper_->set_log_info(this->get_client_combined_info());
+bool APIConnection::send_hello_response(const HelloRequest &msg) {
+  this->client_info_.name = msg.client_info;
+  this->client_info_.peername = this->helper_->getpeername();
   this->client_api_version_major_ = msg.api_version_major;
   this->client_api_version_minor_ = msg.api_version_minor;
-  ESP_LOGV(TAG, "Hello from client: '%s' | %s | API Version %" PRIu32 ".%" PRIu32, this->client_info_.c_str(),
-           this->client_peername_.c_str(), this->client_api_version_major_, this->client_api_version_minor_);
+  ESP_LOGV(TAG, "Hello from client: '%s' | %s | API Version %" PRIu32 ".%" PRIu32, this->client_info_.name.c_str(),
+           this->client_info_.peername.c_str(), this->client_api_version_major_, this->client_api_version_minor_);
 
   HelloResponse resp;
   resp.api_version_major = 1;
   resp.api_version_minor = 10;
-  resp.server_info = App.get_name() + " (esphome v" ESPHOME_VERSION ")";
-  resp.name = App.get_name();
+  // Temporary string for concatenation - will be valid during send_message call
+  std::string server_info = App.get_name() + " (esphome v" ESPHOME_VERSION ")";
+  resp.set_server_info(StringRef(server_info));
+  resp.set_name(StringRef(App.get_name()));
 
 #ifdef USE_API_PASSWORD
   // Password required - wait for authentication
@@ -1443,9 +1390,9 @@ HelloResponse APIConnection::hello(const HelloRequest &msg) {
   this->complete_authentication_();
 #endif
 
-  return resp;
+  return this->send_message(resp, HelloResponse::MESSAGE_TYPE);
 }
-ConnectResponse APIConnection::connect(const ConnectRequest &msg) {
+bool APIConnection::send_connect_response(const ConnectRequest &msg) {
   bool correct = true;
 #ifdef USE_API_PASSWORD
   correct = this->parent_->check_password(msg.password);
@@ -1457,54 +1404,73 @@ ConnectResponse APIConnection::connect(const ConnectRequest &msg) {
   if (correct) {
     this->complete_authentication_();
   }
-  return resp;
+  return this->send_message(resp, ConnectResponse::MESSAGE_TYPE);
 }
-DeviceInfoResponse APIConnection::device_info(const DeviceInfoRequest &msg) {
+
+bool APIConnection::send_ping_response(const PingRequest &msg) {
+  PingResponse resp;
+  return this->send_message(resp, PingResponse::MESSAGE_TYPE);
+}
+
+bool APIConnection::send_device_info_response(const DeviceInfoRequest &msg) {
   DeviceInfoResponse resp{};
 #ifdef USE_API_PASSWORD
   resp.uses_password = true;
-#else
-  resp.uses_password = false;
 #endif
-  resp.name = App.get_name();
-  resp.friendly_name = App.get_friendly_name();
+  resp.set_name(StringRef(App.get_name()));
+  resp.set_friendly_name(StringRef(App.get_friendly_name()));
 #ifdef USE_AREAS
-  resp.suggested_area = App.get_area();
+  resp.set_suggested_area(StringRef(App.get_area()));
 #endif
-  resp.mac_address = get_mac_address_pretty();
-  resp.esphome_version = ESPHOME_VERSION;
-  resp.compilation_time = App.get_compilation_time();
+  // mac_address must store temporary string - will be valid during send_message call
+  std::string mac_address = get_mac_address_pretty();
+  resp.set_mac_address(StringRef(mac_address));
+
+  // Compile-time StringRef constants
+  static constexpr auto ESPHOME_VERSION_REF = StringRef::from_lit(ESPHOME_VERSION);
+  resp.set_esphome_version(ESPHOME_VERSION_REF);
+
+  // get_compilation_time() returns temporary std::string - must store it
+  std::string compilation_time = App.get_compilation_time();
+  resp.set_compilation_time(StringRef(compilation_time));
+
+  // Compile-time StringRef constants for manufacturers
 #if defined(USE_ESP8266) || defined(USE_ESP32)
-  resp.manufacturer = "Espressif";
+  static constexpr auto MANUFACTURER = StringRef::from_lit("Espressif");
 #elif defined(USE_RP2040)
-  resp.manufacturer = "Raspberry Pi";
+  static constexpr auto MANUFACTURER = StringRef::from_lit("Raspberry Pi");
 #elif defined(USE_BK72XX)
-  resp.manufacturer = "Beken";
+  static constexpr auto MANUFACTURER = StringRef::from_lit("Beken");
 #elif defined(USE_LN882X)
-  resp.manufacturer = "Lightning";
+  static constexpr auto MANUFACTURER = StringRef::from_lit("Lightning");
 #elif defined(USE_RTL87XX)
-  resp.manufacturer = "Realtek";
+  static constexpr auto MANUFACTURER = StringRef::from_lit("Realtek");
 #elif defined(USE_HOST)
-  resp.manufacturer = "Host";
+  static constexpr auto MANUFACTURER = StringRef::from_lit("Host");
 #endif
-  resp.model = ESPHOME_BOARD;
+  resp.set_manufacturer(MANUFACTURER);
+
+  static constexpr auto MODEL = StringRef::from_lit(ESPHOME_BOARD);
+  resp.set_model(MODEL);
 #ifdef USE_DEEP_SLEEP
   resp.has_deep_sleep = deep_sleep::global_has_deep_sleep;
 #endif
 #ifdef ESPHOME_PROJECT_NAME
-  resp.project_name = ESPHOME_PROJECT_NAME;
-  resp.project_version = ESPHOME_PROJECT_VERSION;
+  static constexpr auto PROJECT_NAME = StringRef::from_lit(ESPHOME_PROJECT_NAME);
+  static constexpr auto PROJECT_VERSION = StringRef::from_lit(ESPHOME_PROJECT_VERSION);
+  resp.set_project_name(PROJECT_NAME);
+  resp.set_project_version(PROJECT_VERSION);
 #endif
 #ifdef USE_WEBSERVER
   resp.webserver_port = USE_WEBSERVER_PORT;
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-  resp.legacy_bluetooth_proxy_version = bluetooth_proxy::global_bluetooth_proxy->get_legacy_version();
   resp.bluetooth_proxy_feature_flags = bluetooth_proxy::global_bluetooth_proxy->get_feature_flags();
-  resp.bluetooth_mac_address = bluetooth_proxy::global_bluetooth_proxy->get_bluetooth_mac_address_pretty();
+  // bt_mac must store temporary string - will be valid during send_message call
+  std::string bluetooth_mac = bluetooth_proxy::global_bluetooth_proxy->get_bluetooth_mac_address_pretty();
+  resp.set_bluetooth_mac_address(StringRef(bluetooth_mac));
 #endif
 #ifdef USE_VOICE_ASSISTANT
-  resp.legacy_voice_assistant_version = voice_assistant::global_voice_assistant->get_legacy_version();
   resp.voice_assistant_feature_flags = voice_assistant::global_voice_assistant->get_feature_flags();
 #endif
 #ifdef USE_API_NOISE
@@ -1512,23 +1478,26 @@ DeviceInfoResponse APIConnection::device_info(const DeviceInfoRequest &msg) {
 #endif
 #ifdef USE_DEVICES
   for (auto const &device : App.get_devices()) {
-    DeviceInfo device_info;
+    resp.devices.emplace_back();
+    auto &device_info = resp.devices.back();
     device_info.device_id = device->get_device_id();
-    device_info.name = device->get_name();
+    device_info.set_name(StringRef(device->get_name()));
     device_info.area_id = device->get_area_id();
-    resp.devices.push_back(device_info);
   }
 #endif
 #ifdef USE_AREAS
   for (auto const &area : App.get_areas()) {
-    AreaInfo area_info;
+    resp.areas.emplace_back();
+    auto &area_info = resp.areas.back();
     area_info.area_id = area->get_area_id();
-    area_info.name = area->get_name();
-    resp.areas.push_back(area_info);
+    area_info.set_name(StringRef(area->get_name()));
   }
 #endif
-  return resp;
+
+  return this->send_message(resp, DeviceInfoResponse::MESSAGE_TYPE);
 }
+
+#ifdef USE_API_HOMEASSISTANT_STATES
 void APIConnection::on_home_assistant_state_response(const HomeAssistantStateResponse &msg) {
   for (auto &it : this->parent_->get_state_subs()) {
     if (it.entity_id == msg.entity_id && it.attribute.value() == msg.attribute) {
@@ -1536,6 +1505,7 @@ void APIConnection::on_home_assistant_state_response(const HomeAssistantStateRes
     }
   }
 }
+#endif
 #ifdef USE_API_SERVICES
 void APIConnection::execute_service(const ExecuteServiceRequest &msg) {
   bool found = false;
@@ -1550,28 +1520,27 @@ void APIConnection::execute_service(const ExecuteServiceRequest &msg) {
 }
 #endif
 #ifdef USE_API_NOISE
-NoiseEncryptionSetKeyResponse APIConnection::noise_encryption_set_key(const NoiseEncryptionSetKeyRequest &msg) {
-  psk_t psk{};
+bool APIConnection::send_noise_encryption_set_key_response(const NoiseEncryptionSetKeyRequest &msg) {
   NoiseEncryptionSetKeyResponse resp;
+  resp.success = false;
+
+  psk_t psk{};
   if (base64_decode(msg.key, psk.data(), msg.key.size()) != psk.size()) {
     ESP_LOGW(TAG, "Invalid encryption key length");
-    resp.success = false;
-    return resp;
-  }
-
-  if (!this->parent_->save_noise_psk(psk, true)) {
+  } else if (!this->parent_->save_noise_psk(psk, true)) {
     ESP_LOGW(TAG, "Failed to save encryption key");
-    resp.success = false;
-    return resp;
+  } else {
+    resp.success = true;
   }
 
-  resp.success = true;
-  return resp;
+  return this->send_message(resp, NoiseEncryptionSetKeyResponse::MESSAGE_TYPE);
 }
 #endif
+#ifdef USE_API_HOMEASSISTANT_STATES
 void APIConnection::subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) {
   state_subs_at_ = 0;
 }
+#endif
 bool APIConnection::try_to_clear_buffer(bool log_out_of_space) {
   if (this->flags_.remove)
     return false;
@@ -1609,10 +1578,12 @@ bool APIConnection::send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) {
   // Do not set last_traffic_ on send
   return true;
 }
+#ifdef USE_API_PASSWORD
 void APIConnection::on_unauthenticated_access() {
   this->on_fatal_error();
   ESP_LOGD(TAG, "%s access without authentication", this->get_client_combined_info().c_str());
 }
+#endif
 void APIConnection::on_no_setup_connection() {
   this->on_fatal_error();
   ESP_LOGD(TAG, "%s access without full connection", this->get_client_combined_info().c_str());
@@ -1671,6 +1642,10 @@ ProtoWriteBuffer APIConnection::allocate_batch_message_buffer(uint16_t size) {
 }
 
 void APIConnection::process_batch_() {
+  // Ensure PacketInfo remains trivially destructible for our placement new approach
+  static_assert(std::is_trivially_destructible<PacketInfo>::value,
+                "PacketInfo must remain trivially destructible with this placement-new approach");
+
   if (this->deferred_batch_.empty()) {
     this->flags_.batch_scheduled = false;
     return;
@@ -1708,9 +1683,12 @@ void APIConnection::process_batch_() {
     return;
   }
 
-  // Pre-allocate storage for packet info
-  std::vector<PacketInfo> packet_info;
-  packet_info.reserve(num_items);
+  size_t packets_to_process = std::min(num_items, MAX_PACKETS_PER_BATCH);
+
+  // Stack-allocated array for packet info
+  alignas(PacketInfo) char packet_info_storage[MAX_PACKETS_PER_BATCH * sizeof(PacketInfo)];
+  PacketInfo *packet_info = reinterpret_cast<PacketInfo *>(packet_info_storage);
+  size_t packet_count = 0;
 
   // Cache these values to avoid repeated virtual calls
   const uint8_t header_padding = this->helper_->frame_header_padding();
@@ -1742,8 +1720,8 @@ void APIConnection::process_batch_() {
   // The actual message data follows after the header padding
   uint32_t current_offset = 0;
 
-  // Process items and encode directly to buffer
-  for (size_t i = 0; i < this->deferred_batch_.size(); i++) {
+  // Process items and encode directly to buffer (up to our limit)
+  for (size_t i = 0; i < packets_to_process; i++) {
     const auto &item = this->deferred_batch_[i];
     // Try to encode message
     // The creator will calculate overhead to determine if the message fits
@@ -1757,7 +1735,11 @@ void APIConnection::process_batch_() {
     // Message was encoded successfully
     // payload_size is header_padding + actual payload size + footer_size
     uint16_t proto_payload_size = payload_size - header_padding - footer_size;
-    packet_info.emplace_back(item.message_type, current_offset, proto_payload_size);
+    // Use placement new to construct PacketInfo in pre-allocated stack array
+    // This avoids default-constructing all MAX_PACKETS_PER_BATCH elements
+    // Explicit destruction is not needed because PacketInfo is trivially destructible,
+    // as ensured by the static_assert in its definition.
+    new (&packet_info[packet_count++]) PacketInfo(item.message_type, current_offset, proto_payload_size);
 
     // Update tracking variables
     items_processed++;
@@ -1783,8 +1765,8 @@ void APIConnection::process_batch_() {
   }
 
   // Send all collected packets
-  APIError err =
-      this->helper_->write_protobuf_packets(ProtoWriteBuffer{&this->parent_->get_shared_buffer_ref()}, packet_info);
+  APIError err = this->helper_->write_protobuf_packets(ProtoWriteBuffer{&this->parent_->get_shared_buffer_ref()},
+                                                       std::span<const PacketInfo>(packet_info, packet_count));
   if (err != APIError::OK && err != APIError::WOULD_BLOCK) {
     on_fatal_error();
     ESP_LOGW(TAG, "%s: Batch write failed %s errno=%d", this->get_client_combined_info().c_str(), api_error_to_str(err),
@@ -1844,6 +1826,27 @@ uint16_t APIConnection::try_send_ping_request(EntityBase *entity, APIConnection
   return encode_message_to_buffer(req, PingRequest::MESSAGE_TYPE, conn, remaining_size, is_single);
 }
 
-}  // namespace api
-}  // namespace esphome
+#ifdef USE_API_HOMEASSISTANT_STATES
+void APIConnection::process_state_subscriptions_() {
+  const auto &subs = this->parent_->get_state_subs();
+  if (this->state_subs_at_ >= static_cast<int>(subs.size())) {
+    this->state_subs_at_ = -1;
+    return;
+  }
+
+  const auto &it = subs[this->state_subs_at_];
+  SubscribeHomeAssistantStateResponse resp;
+  resp.set_entity_id(StringRef(it.entity_id));
+
+  // Avoid string copy by directly using the optional's value if it exists
+  resp.set_attribute(it.attribute.has_value() ? StringRef(it.attribute.value()) : StringRef(""));
+
+  resp.once = it.once;
+  if (this->send_message(resp, SubscribeHomeAssistantStateResponse::MESSAGE_TYPE)) {
+    this->state_subs_at_++;
+  }
+}
+#endif  // USE_API_HOMEASSISTANT_STATES
+
+}  // namespace esphome::api
 #endif

esphome/components/api/api_connection.h

@@ -13,13 +13,36 @@
 #include <vector>
 #include <functional>
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
+
+// Client information structure
+struct ClientInfo {
+  std::string name;      // Client name from Hello message
+  std::string peername;  // IP:port from socket
+
+  std::string get_combined_info() const {
+    if (name == peername) {
+      // Before Hello message, both are the same
+      return name;
+    }
+    return name + " (" + peername + ")";
+  }
+};
 
 // Keepalive timeout in milliseconds
 static constexpr uint32_t KEEPALIVE_TIMEOUT_MS = 60000;
 // Maximum number of entities to process in a single batch during initial state/info sending
-static constexpr size_t MAX_INITIAL_PER_BATCH = 20;
+// This was increased from 20 to 24 after removing the unique_id field from entity info messages,
+// which reduced message sizes allowing more entities per batch without exceeding packet limits
+static constexpr size_t MAX_INITIAL_PER_BATCH = 24;
+// Maximum number of packets to process in a single batch (platform-dependent)
+// This limit exists to prevent stack overflow from the PacketInfo array in process_batch_
+// Each PacketInfo is 8 bytes, so 64 * 8 = 512 bytes, 32 * 8 = 256 bytes
+#if defined(USE_ESP32) || defined(USE_HOST)
+static constexpr size_t MAX_PACKETS_PER_BATCH = 64;  // ESP32 has 8KB+ stack, HOST has plenty
+#else
+static constexpr size_t MAX_PACKETS_PER_BATCH = 32;  // ESP8266/RP2040/etc have smaller stacks
+#endif
 
 class APIConnection : public APIServerConnection {
  public:
@@ -108,15 +131,16 @@ class APIConnection : public APIServerConnection {
   void media_player_command(const MediaPlayerCommandRequest &msg) override;
 #endif
   bool try_send_log_message(int level, const char *tag, const char *line, size_t message_len);
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   void send_homeassistant_service_call(const HomeassistantServiceResponse &call) {
     if (!this->flags_.service_call_subscription)
       return;
     this->send_message(call, HomeassistantServiceResponse::MESSAGE_TYPE);
   }
+#endif
 #ifdef USE_BLUETOOTH_PROXY
   void subscribe_bluetooth_le_advertisements(const SubscribeBluetoothLEAdvertisementsRequest &msg) override;
   void unsubscribe_bluetooth_le_advertisements(const UnsubscribeBluetoothLEAdvertisementsRequest &msg) override;
-  bool send_bluetooth_le_advertisement(const BluetoothLEAdvertisementResponse &msg);
 
   void bluetooth_device_request(const BluetoothDeviceRequest &msg) override;
   void bluetooth_gatt_read(const BluetoothGATTReadRequest &msg) override;
@@ -125,8 +149,7 @@ class APIConnection : public APIServerConnection {
   void bluetooth_gatt_write_descriptor(const BluetoothGATTWriteDescriptorRequest &msg) override;
   void bluetooth_gatt_get_services(const BluetoothGATTGetServicesRequest &msg) override;
   void bluetooth_gatt_notify(const BluetoothGATTNotifyRequest &msg) override;
-  BluetoothConnectionsFreeResponse subscribe_bluetooth_connections_free(
-      const SubscribeBluetoothConnectionsFreeRequest &msg) override;
+  bool send_subscribe_bluetooth_connections_free_response(const SubscribeBluetoothConnectionsFreeRequest &msg) override;
   void bluetooth_scanner_set_mode(const BluetoothScannerSetModeRequest &msg) override;
 
 #endif
@@ -144,8 +167,7 @@ class APIConnection : public APIServerConnection {
   void on_voice_assistant_audio(const VoiceAssistantAudio &msg) override;
   void on_voice_assistant_timer_event_response(const VoiceAssistantTimerEventResponse &msg) override;
   void on_voice_assistant_announce_request(const VoiceAssistantAnnounceRequest &msg) override;
-  VoiceAssistantConfigurationResponse voice_assistant_get_configuration(
-      const VoiceAssistantConfigurationRequest &msg) override;
+  bool send_voice_assistant_get_configuration_response(const VoiceAssistantConfigurationRequest &msg) override;
   void voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) override;
 #endif
 
@@ -168,15 +190,17 @@ class APIConnection : public APIServerConnection {
     // we initiated ping
     this->flags_.sent_ping = false;
   }
+#ifdef USE_API_HOMEASSISTANT_STATES
   void on_home_assistant_state_response(const HomeAssistantStateResponse &msg) override;
+#endif
 #ifdef USE_HOMEASSISTANT_TIME
   void on_get_time_response(const GetTimeResponse &value) override;
 #endif
-  HelloResponse hello(const HelloRequest &msg) override;
-  ConnectResponse connect(const ConnectRequest &msg) override;
-  DisconnectResponse disconnect(const DisconnectRequest &msg) override;
-  PingResponse ping(const PingRequest &msg) override { return {}; }
-  DeviceInfoResponse device_info(const DeviceInfoRequest &msg) override;
+  bool send_hello_response(const HelloRequest &msg) override;
+  bool send_connect_response(const ConnectRequest &msg) override;
+  bool send_disconnect_response(const DisconnectRequest &msg) override;
+  bool send_ping_response(const PingRequest &msg) override;
+  bool send_device_info_response(const DeviceInfoRequest &msg) override;
   void list_entities(const ListEntitiesRequest &msg) override { this->list_entities_iterator_.begin(); }
   void subscribe_states(const SubscribeStatesRequest &msg) override {
     this->flags_.state_subscription = true;
@@ -187,19 +211,20 @@ class APIConnection : public APIServerConnection {
     if (msg.dump_config)
       App.schedule_dump_config();
   }
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   void subscribe_homeassistant_services(const SubscribeHomeassistantServicesRequest &msg) override {
     this->flags_.service_call_subscription = true;
   }
+#endif
+#ifdef USE_API_HOMEASSISTANT_STATES
   void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) override;
-  GetTimeResponse get_time(const GetTimeRequest &msg) override {
-    // TODO
-    return {};
-  }
+#endif
+  bool send_get_time_response(const GetTimeRequest &msg) override;
 #ifdef USE_API_SERVICES
   void execute_service(const ExecuteServiceRequest &msg) override;
 #endif
 #ifdef USE_API_NOISE
-  NoiseEncryptionSetKeyResponse noise_encryption_set_key(const NoiseEncryptionSetKeyRequest &msg) override;
+  bool send_noise_encryption_set_key_response(const NoiseEncryptionSetKeyRequest &msg) override;
 #endif
 
   bool is_authenticated() override {
@@ -211,7 +236,9 @@ class APIConnection : public APIServerConnection {
   }
   uint8_t get_log_subscription_level() const { return this->flags_.log_subscription; }
   void on_fatal_error() override;
+#ifdef USE_API_PASSWORD
   void on_unauthenticated_access() override;
+#endif
   void on_no_setup_connection() override;
   ProtoWriteBuffer create_buffer(uint32_t reserve_size) override {
     // FIXME: ensure no recursive writes can happen
@@ -261,13 +288,7 @@ class APIConnection : public APIServerConnection {
   bool try_to_clear_buffer(bool log_out_of_space);
   bool send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) override;
 
-  std::string get_client_combined_info() const {
-    if (this->client_info_ == this->client_peername_) {
-      // Before Hello message, both are the same (just IP:port)
-      return this->client_info_;
-    }
-    return this->client_info_ + " (" + this->client_peername_ + ")";
-  }
+  std::string get_client_combined_info() const { return this->client_info_.get_combined_info(); }
 
   // Buffer allocator methods for batch processing
   ProtoWriteBuffer allocate_single_message_buffer(uint16_t size);
@@ -277,6 +298,10 @@ class APIConnection : public APIServerConnection {
   // Helper function to handle authentication completion
   void complete_authentication_();
 
+#ifdef USE_API_HOMEASSISTANT_STATES
+  void process_state_subscriptions_();
+#endif
+
   // Non-template helper to encode any ProtoMessage
   static uint16_t encode_message_to_buffer(ProtoMessage &msg, uint8_t message_type, APIConnection *conn,
                                            uint32_t remaining_size, bool is_single);
@@ -296,14 +321,17 @@ class APIConnection : public APIServerConnection {
                                               APIConnection *conn, uint32_t remaining_size, bool is_single) {
     // Set common fields that are shared by all entity types
     msg.key = entity->get_object_id_hash();
-    msg.object_id = entity->get_object_id();
+    // IMPORTANT: get_object_id() may return a temporary std::string
+    std::string object_id = entity->get_object_id();
+    msg.set_object_id(StringRef(object_id));
 
-    if (entity->has_own_name())
-      msg.name = entity->get_name();
+    if (entity->has_own_name()) {
+      msg.set_name(entity->get_name());
+    }
 
-      // Set common EntityBase properties
+    // Set common EntityBase properties
 #ifdef USE_ENTITY_ICON
-    msg.icon = entity->get_icon();
+    msg.set_icon(entity->get_icon_ref());
 #endif
     msg.disabled_by_default = entity->is_disabled_by_default();
     msg.entity_category = static_cast<enums::EntityCategory>(entity->get_entity_category());
@@ -473,13 +501,14 @@ class APIConnection : public APIServerConnection {
   std::unique_ptr<camera::CameraImageReader> image_reader_;
 #endif
 
-  // Group 3: Strings (12 bytes each on 32-bit, 4-byte aligned)
-  std::string client_info_;
-  std::string client_peername_;
+  // Group 3: Client info struct (24 bytes on 32-bit: 2 strings × 12 bytes each)
+  ClientInfo client_info_;
 
   // Group 4: 4-byte types
   uint32_t last_traffic_;
+#ifdef USE_API_HOMEASSISTANT_STATES
   int state_subs_at_ = -1;
+#endif
 
   // Function pointer type for message encoding
   using MessageCreatorPtr = uint16_t (*)(EntityBase *, APIConnection *, uint32_t remaining_size, bool is_single);
@@ -709,6 +738,5 @@ class APIConnection : public APIServerConnection {
   }
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/api_frame_helper.h

@@ -8,16 +8,17 @@
 
 #include "esphome/core/defines.h"
 #ifdef USE_API
-#ifdef USE_API_NOISE
-#include "noise/protocol.h"
-#endif
-
-#include "api_noise_context.h"
 #include "esphome/components/socket/socket.h"
 #include "esphome/core/application.h"
+#include "esphome/core/log.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
+
+// uncomment to log raw packets
+//#define HELPER_LOG_PACKETS
+
+// Forward declaration
+struct ClientInfo;
 
 class ProtoWriteBuffer;
 
@@ -40,7 +41,6 @@ struct PacketInfo {
 enum class APIError : uint16_t {
   OK = 0,
   WOULD_BLOCK = 1001,
-  BAD_HANDSHAKE_PACKET_LEN = 1002,
   BAD_INDICATOR = 1003,
   BAD_DATA_PACKET = 1004,
   TCP_NODELAY_FAILED = 1005,
@@ -51,16 +51,19 @@ enum class APIError : uint16_t {
   BAD_ARG = 1010,
   SOCKET_READ_FAILED = 1011,
   SOCKET_WRITE_FAILED = 1012,
+  OUT_OF_MEMORY = 1018,
+  CONNECTION_CLOSED = 1022,
+#ifdef USE_API_NOISE
+  BAD_HANDSHAKE_PACKET_LEN = 1002,
   HANDSHAKESTATE_READ_FAILED = 1013,
   HANDSHAKESTATE_WRITE_FAILED = 1014,
   HANDSHAKESTATE_BAD_STATE = 1015,
   CIPHERSTATE_DECRYPT_FAILED = 1016,
   CIPHERSTATE_ENCRYPT_FAILED = 1017,
-  OUT_OF_MEMORY = 1018,
   HANDSHAKESTATE_SETUP_FAILED = 1019,
   HANDSHAKESTATE_SPLIT_FAILED = 1020,
   BAD_HANDSHAKE_ERROR_BYTE = 1021,
-  CONNECTION_CLOSED = 1022,
+#endif
 };
 
 const char *api_error_to_str(APIError err);
@@ -68,7 +71,8 @@ const char *api_error_to_str(APIError err);
 class APIFrameHelper {
  public:
   APIFrameHelper() = default;
-  explicit APIFrameHelper(std::unique_ptr<socket::Socket> socket) : socket_owned_(std::move(socket)) {
+  explicit APIFrameHelper(std::unique_ptr<socket::Socket> socket, const ClientInfo *client_info)
+      : socket_owned_(std::move(socket)), client_info_(client_info) {
     socket_ = socket_owned_.get();
   }
   virtual ~APIFrameHelper() = default;
@@ -94,8 +98,6 @@ class APIFrameHelper {
     }
     return APIError::OK;
   }
-  // Give this helper a name for logging
-  void set_log_info(std::string info) { info_ = std::move(info); }
   virtual APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) = 0;
   // Write multiple protobuf packets in a single operation
   // packets contains (message_type, offset, length) for each message in the buffer
@@ -109,29 +111,28 @@ class APIFrameHelper {
   bool is_socket_ready() const { return socket_ != nullptr && socket_->ready(); }
 
  protected:
-  // Struct for holding parsed frame data
-  struct ParsedFrame {
-    std::vector<uint8_t> msg;
-  };
-
   // Buffer containing data to be sent
   struct SendBuffer {
-    std::vector<uint8_t> data;
-    uint16_t offset{0};  // Current offset within the buffer (uint16_t to reduce memory usage)
+    std::unique_ptr<uint8_t[]> data;
+    uint16_t size{0};    // Total size of the buffer
+    uint16_t offset{0};  // Current offset within the buffer
 
     // Using uint16_t reduces memory usage since ESPHome API messages are limited to UINT16_MAX (65535) bytes
-    uint16_t remaining() const { return static_cast<uint16_t>(data.size()) - offset; }
-    const uint8_t *current_data() const { return data.data() + offset; }
+    uint16_t remaining() const { return size - offset; }
+    const uint8_t *current_data() const { return data.get() + offset; }
   };
 
   // Common implementation for writing raw data to socket
-  APIError write_raw_(const struct iovec *iov, int iovcnt);
+  APIError write_raw_(const struct iovec *iov, int iovcnt, uint16_t total_write_len);
 
   // Try to send data from the tx buffer
   APIError try_send_tx_buf_();
 
   // Helper method to buffer data from IOVs
-  void buffer_data_from_iov_(const struct iovec *iov, int iovcnt, uint16_t total_write_len);
+  void buffer_data_from_iov_(const struct iovec *iov, int iovcnt, uint16_t total_write_len, uint16_t offset);
+
+  // Common socket write error handling
+  APIError handle_socket_write_error_();
   template<typename StateEnum>
   APIError write_raw_(const struct iovec *iov, int iovcnt, socket::Socket *socket, std::vector<uint8_t> &tx_buf,
                       const std::string &info, StateEnum &state, StateEnum failed_state);
@@ -161,10 +162,13 @@ class APIFrameHelper {
 
   // Containers (size varies, but typically 12+ bytes on 32-bit)
   std::deque<SendBuffer> tx_buf_;
-  std::string info_;
   std::vector<struct iovec> reusable_iovs_;
   std::vector<uint8_t> rx_buf_;
 
+  // Pointer to client info (4 bytes on 32-bit)
+  // Note: The pointed-to ClientInfo object must outlive this APIFrameHelper instance.
+  const ClientInfo *client_info_{nullptr};
+
   // Group smaller types together
   uint16_t rx_buf_len_ = 0;
   State state_{State::INITIALIZE};
@@ -179,105 +183,6 @@ class APIFrameHelper {
   APIError handle_socket_read_result_(ssize_t received);
 };
 
-#ifdef USE_API_NOISE
-class APINoiseFrameHelper : public APIFrameHelper {
- public:
-  APINoiseFrameHelper(std::unique_ptr<socket::Socket> socket, std::shared_ptr<APINoiseContext> ctx)
-      : APIFrameHelper(std::move(socket)), ctx_(std::move(ctx)) {
-    // Noise header structure:
-    // Pos 0: indicator (0x01)
-    // Pos 1-2: encrypted payload size (16-bit big-endian)
-    // Pos 3-6: encrypted type (16-bit) + data_len (16-bit)
-    // Pos 7+: actual payload data
-    frame_header_padding_ = 7;
-  }
-  ~APINoiseFrameHelper() override;
-  APIError init() override;
-  APIError loop() override;
-  APIError read_packet(ReadPacketBuffer *buffer) override;
-  APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
-  APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
-  // Get the frame header padding required by this protocol
-  uint8_t frame_header_padding() override { return frame_header_padding_; }
-  // Get the frame footer size required by this protocol
-  uint8_t frame_footer_size() override { return frame_footer_size_; }
+}  // namespace esphome::api
 
- protected:
-  APIError state_action_();
-  APIError try_read_frame_(ParsedFrame *frame);
-  APIError write_frame_(const uint8_t *data, uint16_t len);
-  APIError init_handshake_();
-  APIError check_handshake_finished_();
-  void send_explicit_handshake_reject_(const std::string &reason);
-
-  // Pointers first (4 bytes each)
-  NoiseHandshakeState *handshake_{nullptr};
-  NoiseCipherState *send_cipher_{nullptr};
-  NoiseCipherState *recv_cipher_{nullptr};
-
-  // Shared pointer (8 bytes on 32-bit = 4 bytes control block pointer + 4 bytes object pointer)
-  std::shared_ptr<APINoiseContext> ctx_;
-
-  // Vector (12 bytes on 32-bit)
-  std::vector<uint8_t> prologue_;
-
-  // NoiseProtocolId (size depends on implementation)
-  NoiseProtocolId nid_;
-
-  // Group small types together
-  // Fixed-size header buffer for noise protocol:
-  // 1 byte for indicator + 2 bytes for message size (16-bit value, not varint)
-  // Note: Maximum message size is UINT16_MAX (65535), with a limit of 128 bytes during handshake phase
-  uint8_t rx_header_buf_[3];
-  uint8_t rx_header_buf_len_ = 0;
-  // 4 bytes total, no padding
-};
-#endif  // USE_API_NOISE
-
-#ifdef USE_API_PLAINTEXT
-class APIPlaintextFrameHelper : public APIFrameHelper {
- public:
-  APIPlaintextFrameHelper(std::unique_ptr<socket::Socket> socket) : APIFrameHelper(std::move(socket)) {
-    // Plaintext header structure (worst case):
-    // Pos 0: indicator (0x00)
-    // Pos 1-3: payload size varint (up to 3 bytes)
-    // Pos 4-5: message type varint (up to 2 bytes)
-    // Pos 6+: actual payload data
-    frame_header_padding_ = 6;
-  }
-  ~APIPlaintextFrameHelper() override = default;
-  APIError init() override;
-  APIError loop() override;
-  APIError read_packet(ReadPacketBuffer *buffer) override;
-  APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
-  APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
-  uint8_t frame_header_padding() override { return frame_header_padding_; }
-  // Get the frame footer size required by this protocol
-  uint8_t frame_footer_size() override { return frame_footer_size_; }
-
- protected:
-  APIError try_read_frame_(ParsedFrame *frame);
-
-  // Group 2-byte aligned types
-  uint16_t rx_header_parsed_type_ = 0;
-  uint16_t rx_header_parsed_len_ = 0;
-
-  // Group 1-byte types together
-  // Fixed-size header buffer for plaintext protocol:
-  // We now store the indicator byte + the two varints.
-  // To match noise protocol's maximum message size (UINT16_MAX = 65535), we need:
-  // 1 byte for indicator + 3 bytes for message size varint (supports up to 2097151) + 2 bytes for message type varint
-  //
-  // While varints could theoretically be up to 10 bytes each for 64-bit values,
-  // attempting to process messages with headers that large would likely crash the
-  // ESP32 due to memory constraints.
-  uint8_t rx_header_buf_[6];  // 1 byte indicator + 5 bytes for varints (3 for size + 2 for type)
-  uint8_t rx_header_buf_pos_ = 0;
-  bool rx_header_parsed_ = false;
-  // 8 bytes total, no padding needed
-};
-#endif
-
-}  // namespace api
-}  // namespace esphome
-#endif
+#endif  // USE_API

esphome/components/api/api_frame_helper_noise.cpp

@@ -0,0 +1,583 @@
+#include "api_frame_helper_noise.h"
+#ifdef USE_API
+#ifdef USE_API_NOISE
+#include "api_connection.h"  // For ClientInfo struct
+#include "esphome/core/application.h"
+#include "esphome/core/hal.h"
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
+#include "proto.h"
+#include <cstring>
+#include <cinttypes>
+
+namespace esphome::api {
+
+static const char *const TAG = "api.noise";
+static const char *const PROLOGUE_INIT = "NoiseAPIInit";
+static constexpr size_t PROLOGUE_INIT_LEN = 12;  // strlen("NoiseAPIInit")
+
+#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->client_info_->get_combined_info().c_str(), ##__VA_ARGS__)
+
+#ifdef HELPER_LOG_PACKETS
+#define LOG_PACKET_RECEIVED(buffer) ESP_LOGVV(TAG, "Received frame: %s", format_hex_pretty(buffer).c_str())
+#define LOG_PACKET_SENDING(data, len) ESP_LOGVV(TAG, "Sending raw: %s", format_hex_pretty(data, len).c_str())
+#else
+#define LOG_PACKET_RECEIVED(buffer) ((void) 0)
+#define LOG_PACKET_SENDING(data, len) ((void) 0)
+#endif
+
+/// Convert a noise error code to a readable error
+std::string noise_err_to_str(int err) {
+  if (err == NOISE_ERROR_NO_MEMORY)
+    return "NO_MEMORY";
+  if (err == NOISE_ERROR_UNKNOWN_ID)
+    return "UNKNOWN_ID";
+  if (err == NOISE_ERROR_UNKNOWN_NAME)
+    return "UNKNOWN_NAME";
+  if (err == NOISE_ERROR_MAC_FAILURE)
+    return "MAC_FAILURE";
+  if (err == NOISE_ERROR_NOT_APPLICABLE)
+    return "NOT_APPLICABLE";
+  if (err == NOISE_ERROR_SYSTEM)
+    return "SYSTEM";
+  if (err == NOISE_ERROR_REMOTE_KEY_REQUIRED)
+    return "REMOTE_KEY_REQUIRED";
+  if (err == NOISE_ERROR_LOCAL_KEY_REQUIRED)
+    return "LOCAL_KEY_REQUIRED";
+  if (err == NOISE_ERROR_PSK_REQUIRED)
+    return "PSK_REQUIRED";
+  if (err == NOISE_ERROR_INVALID_LENGTH)
+    return "INVALID_LENGTH";
+  if (err == NOISE_ERROR_INVALID_PARAM)
+    return "INVALID_PARAM";
+  if (err == NOISE_ERROR_INVALID_STATE)
+    return "INVALID_STATE";
+  if (err == NOISE_ERROR_INVALID_NONCE)
+    return "INVALID_NONCE";
+  if (err == NOISE_ERROR_INVALID_PRIVATE_KEY)
+    return "INVALID_PRIVATE_KEY";
+  if (err == NOISE_ERROR_INVALID_PUBLIC_KEY)
+    return "INVALID_PUBLIC_KEY";
+  if (err == NOISE_ERROR_INVALID_FORMAT)
+    return "INVALID_FORMAT";
+  if (err == NOISE_ERROR_INVALID_SIGNATURE)
+    return "INVALID_SIGNATURE";
+  return to_string(err);
+}
+
+/// Initialize the frame helper, returns OK if successful.
+APIError APINoiseFrameHelper::init() {
+  APIError err = init_common_();
+  if (err != APIError::OK) {
+    return err;
+  }
+
+  // init prologue
+  size_t old_size = prologue_.size();
+  prologue_.resize(old_size + PROLOGUE_INIT_LEN);
+  std::memcpy(prologue_.data() + old_size, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
+
+  state_ = State::CLIENT_HELLO;
+  return APIError::OK;
+}
+// Helper for handling handshake frame errors
+APIError APINoiseFrameHelper::handle_handshake_frame_error_(APIError aerr) {
+  if (aerr == APIError::BAD_INDICATOR) {
+    send_explicit_handshake_reject_("Bad indicator byte");
+  } else if (aerr == APIError::BAD_HANDSHAKE_PACKET_LEN) {
+    send_explicit_handshake_reject_("Bad handshake packet len");
+  }
+  return aerr;
+}
+
+// Helper for handling noise library errors
+APIError APINoiseFrameHelper::handle_noise_error_(int err, const char *func_name, APIError api_err) {
+  if (err != 0) {
+    state_ = State::FAILED;
+    HELPER_LOG("%s failed: %s", func_name, noise_err_to_str(err).c_str());
+    return api_err;
+  }
+  return APIError::OK;
+}
+
+/// Run through handshake messages (if in that phase)
+APIError APINoiseFrameHelper::loop() {
+  // During handshake phase, process as many actions as possible until we can't progress
+  // socket_->ready() stays true until next main loop, but state_action() will return
+  // WOULD_BLOCK when no more data is available to read
+  while (state_ != State::DATA && this->socket_->ready()) {
+    APIError err = state_action_();
+    if (err == APIError::WOULD_BLOCK) {
+      break;
+    }
+    if (err != APIError::OK) {
+      return err;
+    }
+  }
+
+  // Use base class implementation for buffer sending
+  return APIFrameHelper::loop();
+}
+
+/** Read a packet into the rx_buf_. If successful, stores frame data in the frame parameter
+ *
+ * @param frame: The struct to hold the frame information in.
+ *   msg_start: points to the start of the payload - this pointer is only valid until the next
+ *     try_receive_raw_ call
+ *
+ * @return 0 if a full packet is in rx_buf_
+ * @return -1 if error, check errno.
+ *
+ * errno EWOULDBLOCK: Packet could not be read without blocking. Try again later.
+ * errno ENOMEM: Not enough memory for reading packet.
+ * errno API_ERROR_BAD_INDICATOR: Bad indicator byte at start of frame.
+ * errno API_ERROR_HANDSHAKE_PACKET_LEN: Packet too big for this phase.
+ */
+APIError APINoiseFrameHelper::try_read_frame_(std::vector<uint8_t> *frame) {
+  if (frame == nullptr) {
+    HELPER_LOG("Bad argument for try_read_frame_");
+    return APIError::BAD_ARG;
+  }
+
+  // read header
+  if (rx_header_buf_len_ < 3) {
+    // no header information yet
+    uint8_t to_read = 3 - rx_header_buf_len_;
+    ssize_t received = this->socket_->read(&rx_header_buf_[rx_header_buf_len_], to_read);
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
+    }
+    rx_header_buf_len_ += static_cast<uint8_t>(received);
+    if (static_cast<uint8_t>(received) != to_read) {
+      // not a full read
+      return APIError::WOULD_BLOCK;
+    }
+
+    if (rx_header_buf_[0] != 0x01) {
+      state_ = State::FAILED;
+      HELPER_LOG("Bad indicator byte %u", rx_header_buf_[0]);
+      return APIError::BAD_INDICATOR;
+    }
+    // header reading done
+  }
+
+  // read body
+  uint16_t msg_size = (((uint16_t) rx_header_buf_[1]) << 8) | rx_header_buf_[2];
+
+  if (state_ != State::DATA && msg_size > 128) {
+    // for handshake message only permit up to 128 bytes
+    state_ = State::FAILED;
+    HELPER_LOG("Bad packet len for handshake: %d", msg_size);
+    return APIError::BAD_HANDSHAKE_PACKET_LEN;
+  }
+
+  // reserve space for body
+  if (rx_buf_.size() != msg_size) {
+    rx_buf_.resize(msg_size);
+  }
+
+  if (rx_buf_len_ < msg_size) {
+    // more data to read
+    uint16_t to_read = msg_size - rx_buf_len_;
+    ssize_t received = this->socket_->read(&rx_buf_[rx_buf_len_], to_read);
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
+    }
+    rx_buf_len_ += static_cast<uint16_t>(received);
+    if (static_cast<uint16_t>(received) != to_read) {
+      // not all read
+      return APIError::WOULD_BLOCK;
+    }
+  }
+
+  LOG_PACKET_RECEIVED(rx_buf_);
+  *frame = std::move(rx_buf_);
+  // consume msg
+  rx_buf_ = {};
+  rx_buf_len_ = 0;
+  rx_header_buf_len_ = 0;
+  return APIError::OK;
+}
+
+/** To be called from read/write methods.
+ *
+ * This method runs through the internal handshake methods, if in that state.
+ *
+ * If the handshake is still active when this method returns and a read/write can't take place at
+ * the moment, returns WOULD_BLOCK.
+ * If an error occurred, returns that error. Only returns OK if the transport is ready for data
+ * traffic.
+ */
+APIError APINoiseFrameHelper::state_action_() {
+  int err;
+  APIError aerr;
+  if (state_ == State::INITIALIZE) {
+    HELPER_LOG("Bad state for method: %d", (int) state_);
+    return APIError::BAD_STATE;
+  }
+  if (state_ == State::CLIENT_HELLO) {
+    // waiting for client hello
+    std::vector<uint8_t> frame;
+    aerr = try_read_frame_(&frame);
+    if (aerr != APIError::OK) {
+      return handle_handshake_frame_error_(aerr);
+    }
+    // ignore contents, may be used in future for flags
+    // Resize for: existing prologue + 2 size bytes + frame data
+    size_t old_size = prologue_.size();
+    prologue_.resize(old_size + 2 + frame.size());
+    prologue_[old_size] = (uint8_t) (frame.size() >> 8);
+    prologue_[old_size + 1] = (uint8_t) frame.size();
+    std::memcpy(prologue_.data() + old_size + 2, frame.data(), frame.size());
+
+    state_ = State::SERVER_HELLO;
+  }
+  if (state_ == State::SERVER_HELLO) {
+    // send server hello
+    const std::string &name = App.get_name();
+    const std::string &mac = get_mac_address();
+
+    std::vector<uint8_t> msg;
+    // Calculate positions and sizes
+    size_t name_len = name.size() + 1;  // including null terminator
+    size_t mac_len = mac.size() + 1;    // including null terminator
+    size_t name_offset = 1;
+    size_t mac_offset = name_offset + name_len;
+    size_t total_size = 1 + name_len + mac_len;
+
+    msg.resize(total_size);
+
+    // chosen proto
+    msg[0] = 0x01;
+
+    // node name, terminated by null byte
+    std::memcpy(msg.data() + name_offset, name.c_str(), name_len);
+    // node mac, terminated by null byte
+    std::memcpy(msg.data() + mac_offset, mac.c_str(), mac_len);
+
+    aerr = write_frame_(msg.data(), msg.size());
+    if (aerr != APIError::OK)
+      return aerr;
+
+    // start handshake
+    aerr = init_handshake_();
+    if (aerr != APIError::OK)
+      return aerr;
+
+    state_ = State::HANDSHAKE;
+  }
+  if (state_ == State::HANDSHAKE) {
+    int action = noise_handshakestate_get_action(handshake_);
+    if (action == NOISE_ACTION_READ_MESSAGE) {
+      // waiting for handshake msg
+      std::vector<uint8_t> frame;
+      aerr = try_read_frame_(&frame);
+      if (aerr != APIError::OK) {
+        return handle_handshake_frame_error_(aerr);
+      }
+
+      if (frame.empty()) {
+        send_explicit_handshake_reject_("Empty handshake message");
+        return APIError::BAD_HANDSHAKE_ERROR_BYTE;
+      } else if (frame[0] != 0x00) {
+        HELPER_LOG("Bad handshake error byte: %u", frame[0]);
+        send_explicit_handshake_reject_("Bad handshake error byte");
+        return APIError::BAD_HANDSHAKE_ERROR_BYTE;
+      }
+
+      NoiseBuffer mbuf;
+      noise_buffer_init(mbuf);
+      noise_buffer_set_input(mbuf, frame.data() + 1, frame.size() - 1);
+      err = noise_handshakestate_read_message(handshake_, &mbuf, nullptr);
+      if (err != 0) {
+        // Special handling for MAC failure
+        send_explicit_handshake_reject_(err == NOISE_ERROR_MAC_FAILURE ? "Handshake MAC failure" : "Handshake error");
+        return handle_noise_error_(err, "noise_handshakestate_read_message", APIError::HANDSHAKESTATE_READ_FAILED);
+      }
+
+      aerr = check_handshake_finished_();
+      if (aerr != APIError::OK)
+        return aerr;
+    } else if (action == NOISE_ACTION_WRITE_MESSAGE) {
+      uint8_t buffer[65];
+      NoiseBuffer mbuf;
+      noise_buffer_init(mbuf);
+      noise_buffer_set_output(mbuf, buffer + 1, sizeof(buffer) - 1);
+
+      err = noise_handshakestate_write_message(handshake_, &mbuf, nullptr);
+      APIError aerr_write =
+          handle_noise_error_(err, "noise_handshakestate_write_message", APIError::HANDSHAKESTATE_WRITE_FAILED);
+      if (aerr_write != APIError::OK)
+        return aerr_write;
+      buffer[0] = 0x00;  // success
+
+      aerr = write_frame_(buffer, mbuf.size + 1);
+      if (aerr != APIError::OK)
+        return aerr;
+      aerr = check_handshake_finished_();
+      if (aerr != APIError::OK)
+        return aerr;
+    } else {
+      // bad state for action
+      state_ = State::FAILED;
+      HELPER_LOG("Bad action for handshake: %d", action);
+      return APIError::HANDSHAKESTATE_BAD_STATE;
+    }
+  }
+  if (state_ == State::CLOSED || state_ == State::FAILED) {
+    return APIError::BAD_STATE;
+  }
+  return APIError::OK;
+}
+void APINoiseFrameHelper::send_explicit_handshake_reject_(const std::string &reason) {
+  std::vector<uint8_t> data;
+  data.resize(reason.length() + 1);
+  data[0] = 0x01;  // failure
+
+  // Copy error message in bulk
+  if (!reason.empty()) {
+    std::memcpy(data.data() + 1, reason.c_str(), reason.length());
+  }
+
+  // temporarily remove failed state
+  auto orig_state = state_;
+  state_ = State::EXPLICIT_REJECT;
+  write_frame_(data.data(), data.size());
+  state_ = orig_state;
+}
+APIError APINoiseFrameHelper::read_packet(ReadPacketBuffer *buffer) {
+  int err;
+  APIError aerr;
+  aerr = state_action_();
+  if (aerr != APIError::OK) {
+    return aerr;
+  }
+
+  if (state_ != State::DATA) {
+    return APIError::WOULD_BLOCK;
+  }
+
+  std::vector<uint8_t> frame;
+  aerr = try_read_frame_(&frame);
+  if (aerr != APIError::OK)
+    return aerr;
+
+  NoiseBuffer mbuf;
+  noise_buffer_init(mbuf);
+  noise_buffer_set_inout(mbuf, frame.data(), frame.size(), frame.size());
+  err = noise_cipherstate_decrypt(recv_cipher_, &mbuf);
+  APIError decrypt_err = handle_noise_error_(err, "noise_cipherstate_decrypt", APIError::CIPHERSTATE_DECRYPT_FAILED);
+  if (decrypt_err != APIError::OK)
+    return decrypt_err;
+
+  uint16_t msg_size = mbuf.size;
+  uint8_t *msg_data = frame.data();
+  if (msg_size < 4) {
+    state_ = State::FAILED;
+    HELPER_LOG("Bad data packet: size %d too short", msg_size);
+    return APIError::BAD_DATA_PACKET;
+  }
+
+  uint16_t type = (((uint16_t) msg_data[0]) << 8) | msg_data[1];
+  uint16_t data_len = (((uint16_t) msg_data[2]) << 8) | msg_data[3];
+  if (data_len > msg_size - 4) {
+    state_ = State::FAILED;
+    HELPER_LOG("Bad data packet: data_len %u greater than msg_size %u", data_len, msg_size);
+    return APIError::BAD_DATA_PACKET;
+  }
+
+  buffer->container = std::move(frame);
+  buffer->data_offset = 4;
+  buffer->data_len = data_len;
+  buffer->type = type;
+  return APIError::OK;
+}
+APIError APINoiseFrameHelper::write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) {
+  // Resize to include MAC space (required for Noise encryption)
+  buffer.get_buffer()->resize(buffer.get_buffer()->size() + frame_footer_size_);
+  PacketInfo packet{type, 0,
+                    static_cast<uint16_t>(buffer.get_buffer()->size() - frame_header_padding_ - frame_footer_size_)};
+  return write_protobuf_packets(buffer, std::span<const PacketInfo>(&packet, 1));
+}
+
+APIError APINoiseFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) {
+  APIError aerr = state_action_();
+  if (aerr != APIError::OK) {
+    return aerr;
+  }
+
+  if (state_ != State::DATA) {
+    return APIError::WOULD_BLOCK;
+  }
+
+  if (packets.empty()) {
+    return APIError::OK;
+  }
+
+  std::vector<uint8_t> *raw_buffer = buffer.get_buffer();
+  uint8_t *buffer_data = raw_buffer->data();  // Cache buffer pointer
+
+  this->reusable_iovs_.clear();
+  this->reusable_iovs_.reserve(packets.size());
+  uint16_t total_write_len = 0;
+
+  // We need to encrypt each packet in place
+  for (const auto &packet : packets) {
+    // The buffer already has padding at offset
+    uint8_t *buf_start = buffer_data + packet.offset;
+
+    // Write noise header
+    buf_start[0] = 0x01;  // indicator
+    // buf_start[1], buf_start[2] to be set after encryption
+
+    // Write message header (to be encrypted)
+    const uint8_t msg_offset = 3;
+    buf_start[msg_offset] = static_cast<uint8_t>(packet.message_type >> 8);      // type high byte
+    buf_start[msg_offset + 1] = static_cast<uint8_t>(packet.message_type);       // type low byte
+    buf_start[msg_offset + 2] = static_cast<uint8_t>(packet.payload_size >> 8);  // data_len high byte
+    buf_start[msg_offset + 3] = static_cast<uint8_t>(packet.payload_size);       // data_len low byte
+    // payload data is already in the buffer starting at offset + 7
+
+    // Make sure we have space for MAC
+    // The buffer should already have been sized appropriately
+
+    // Encrypt the message in place
+    NoiseBuffer mbuf;
+    noise_buffer_init(mbuf);
+    noise_buffer_set_inout(mbuf, buf_start + msg_offset, 4 + packet.payload_size,
+                           4 + packet.payload_size + frame_footer_size_);
+
+    int err = noise_cipherstate_encrypt(send_cipher_, &mbuf);
+    APIError aerr = handle_noise_error_(err, "noise_cipherstate_encrypt", APIError::CIPHERSTATE_ENCRYPT_FAILED);
+    if (aerr != APIError::OK)
+      return aerr;
+
+    // Fill in the encrypted size
+    buf_start[1] = static_cast<uint8_t>(mbuf.size >> 8);
+    buf_start[2] = static_cast<uint8_t>(mbuf.size);
+
+    // Add iovec for this encrypted packet
+    size_t packet_len = static_cast<size_t>(3 + mbuf.size);  // indicator + size + encrypted data
+    this->reusable_iovs_.push_back({buf_start, packet_len});
+    total_write_len += packet_len;
+  }
+
+  // Send all encrypted packets in one writev call
+  return this->write_raw_(this->reusable_iovs_.data(), this->reusable_iovs_.size(), total_write_len);
+}
+
+APIError APINoiseFrameHelper::write_frame_(const uint8_t *data, uint16_t len) {
+  uint8_t header[3];
+  header[0] = 0x01;  // indicator
+  header[1] = (uint8_t) (len >> 8);
+  header[2] = (uint8_t) len;
+
+  struct iovec iov[2];
+  iov[0].iov_base = header;
+  iov[0].iov_len = 3;
+  if (len == 0) {
+    return this->write_raw_(iov, 1, 3);  // Just header
+  }
+  iov[1].iov_base = const_cast<uint8_t *>(data);
+  iov[1].iov_len = len;
+
+  return this->write_raw_(iov, 2, 3 + len);  // Header + data
+}
+
+/** Initiate the data structures for the handshake.
+ *
+ * @return 0 on success, -1 on error (check errno)
+ */
+APIError APINoiseFrameHelper::init_handshake_() {
+  int err;
+  memset(&nid_, 0, sizeof(nid_));
+  // const char *proto = "Noise_NNpsk0_25519_ChaChaPoly_SHA256";
+  // err = noise_protocol_name_to_id(&nid_, proto, strlen(proto));
+  nid_.pattern_id = NOISE_PATTERN_NN;
+  nid_.cipher_id = NOISE_CIPHER_CHACHAPOLY;
+  nid_.dh_id = NOISE_DH_CURVE25519;
+  nid_.prefix_id = NOISE_PREFIX_STANDARD;
+  nid_.hybrid_id = NOISE_DH_NONE;
+  nid_.hash_id = NOISE_HASH_SHA256;
+  nid_.modifier_ids[0] = NOISE_MODIFIER_PSK0;
+
+  err = noise_handshakestate_new_by_id(&handshake_, &nid_, NOISE_ROLE_RESPONDER);
+  APIError aerr = handle_noise_error_(err, "noise_handshakestate_new_by_id", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  if (aerr != APIError::OK)
+    return aerr;
+
+  const auto &psk = ctx_->get_psk();
+  err = noise_handshakestate_set_pre_shared_key(handshake_, psk.data(), psk.size());
+  aerr = handle_noise_error_(err, "noise_handshakestate_set_pre_shared_key", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  if (aerr != APIError::OK)
+    return aerr;
+
+  err = noise_handshakestate_set_prologue(handshake_, prologue_.data(), prologue_.size());
+  aerr = handle_noise_error_(err, "noise_handshakestate_set_prologue", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  if (aerr != APIError::OK)
+    return aerr;
+  // set_prologue copies it into handshakestate, so we can get rid of it now
+  prologue_ = {};
+
+  err = noise_handshakestate_start(handshake_);
+  aerr = handle_noise_error_(err, "noise_handshakestate_start", APIError::HANDSHAKESTATE_SETUP_FAILED);
+  if (aerr != APIError::OK)
+    return aerr;
+  return APIError::OK;
+}
+
+APIError APINoiseFrameHelper::check_handshake_finished_() {
+  assert(state_ == State::HANDSHAKE);
+
+  int action = noise_handshakestate_get_action(handshake_);
+  if (action == NOISE_ACTION_READ_MESSAGE || action == NOISE_ACTION_WRITE_MESSAGE)
+    return APIError::OK;
+  if (action != NOISE_ACTION_SPLIT) {
+    state_ = State::FAILED;
+    HELPER_LOG("Bad action for handshake: %d", action);
+    return APIError::HANDSHAKESTATE_BAD_STATE;
+  }
+  int err = noise_handshakestate_split(handshake_, &send_cipher_, &recv_cipher_);
+  APIError aerr = handle_noise_error_(err, "noise_handshakestate_split", APIError::HANDSHAKESTATE_SPLIT_FAILED);
+  if (aerr != APIError::OK)
+    return aerr;
+
+  frame_footer_size_ = noise_cipherstate_get_mac_length(send_cipher_);
+
+  HELPER_LOG("Handshake complete!");
+  noise_handshakestate_free(handshake_);
+  handshake_ = nullptr;
+  state_ = State::DATA;
+  return APIError::OK;
+}
+
+APINoiseFrameHelper::~APINoiseFrameHelper() {
+  if (handshake_ != nullptr) {
+    noise_handshakestate_free(handshake_);
+    handshake_ = nullptr;
+  }
+  if (send_cipher_ != nullptr) {
+    noise_cipherstate_free(send_cipher_);
+    send_cipher_ = nullptr;
+  }
+  if (recv_cipher_ != nullptr) {
+    noise_cipherstate_free(recv_cipher_);
+    recv_cipher_ = nullptr;
+  }
+}
+
+extern "C" {
+// declare how noise generates random bytes (here with a good HWRNG based on the RF system)
+void noise_rand_bytes(void *output, size_t len) {
+  if (!esphome::random_bytes(reinterpret_cast<uint8_t *>(output), len)) {
+    ESP_LOGE(TAG, "Acquiring random bytes failed; rebooting");
+    arch_restart();
+  }
+}
+}
+
+}  // namespace esphome::api
+#endif  // USE_API_NOISE
+#endif  // USE_API

esphome/components/api/api_frame_helper_noise.h

@@ -0,0 +1,68 @@
+#pragma once
+#include "api_frame_helper.h"
+#ifdef USE_API
+#ifdef USE_API_NOISE
+#include "noise/protocol.h"
+#include "api_noise_context.h"
+
+namespace esphome::api {
+
+class APINoiseFrameHelper : public APIFrameHelper {
+ public:
+  APINoiseFrameHelper(std::unique_ptr<socket::Socket> socket, std::shared_ptr<APINoiseContext> ctx,
+                      const ClientInfo *client_info)
+      : APIFrameHelper(std::move(socket), client_info), ctx_(std::move(ctx)) {
+    // Noise header structure:
+    // Pos 0: indicator (0x01)
+    // Pos 1-2: encrypted payload size (16-bit big-endian)
+    // Pos 3-6: encrypted type (16-bit) + data_len (16-bit)
+    // Pos 7+: actual payload data
+    frame_header_padding_ = 7;
+  }
+  ~APINoiseFrameHelper() override;
+  APIError init() override;
+  APIError loop() override;
+  APIError read_packet(ReadPacketBuffer *buffer) override;
+  APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
+  APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
+  // Get the frame header padding required by this protocol
+  uint8_t frame_header_padding() override { return frame_header_padding_; }
+  // Get the frame footer size required by this protocol
+  uint8_t frame_footer_size() override { return frame_footer_size_; }
+
+ protected:
+  APIError state_action_();
+  APIError try_read_frame_(std::vector<uint8_t> *frame);
+  APIError write_frame_(const uint8_t *data, uint16_t len);
+  APIError init_handshake_();
+  APIError check_handshake_finished_();
+  void send_explicit_handshake_reject_(const std::string &reason);
+  APIError handle_handshake_frame_error_(APIError aerr);
+  APIError handle_noise_error_(int err, const char *func_name, APIError api_err);
+
+  // Pointers first (4 bytes each)
+  NoiseHandshakeState *handshake_{nullptr};
+  NoiseCipherState *send_cipher_{nullptr};
+  NoiseCipherState *recv_cipher_{nullptr};
+
+  // Shared pointer (8 bytes on 32-bit = 4 bytes control block pointer + 4 bytes object pointer)
+  std::shared_ptr<APINoiseContext> ctx_;
+
+  // Vector (12 bytes on 32-bit)
+  std::vector<uint8_t> prologue_;
+
+  // NoiseProtocolId (size depends on implementation)
+  NoiseProtocolId nid_;
+
+  // Group small types together
+  // Fixed-size header buffer for noise protocol:
+  // 1 byte for indicator + 2 bytes for message size (16-bit value, not varint)
+  // Note: Maximum message size is UINT16_MAX (65535), with a limit of 128 bytes during handshake phase
+  uint8_t rx_header_buf_[3];
+  uint8_t rx_header_buf_len_ = 0;
+  // 4 bytes total, no padding
+};
+
+}  // namespace esphome::api
+#endif  // USE_API_NOISE
+#endif  // USE_API

esphome/components/api/api_frame_helper_plaintext.cpp

@@ -0,0 +1,290 @@
+#include "api_frame_helper_plaintext.h"
+#ifdef USE_API
+#ifdef USE_API_PLAINTEXT
+#include "api_connection.h"  // For ClientInfo struct
+#include "esphome/core/application.h"
+#include "esphome/core/hal.h"
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
+#include "proto.h"
+#include <cstring>
+#include <cinttypes>
+
+namespace esphome::api {
+
+static const char *const TAG = "api.plaintext";
+
+#define HELPER_LOG(msg, ...) ESP_LOGVV(TAG, "%s: " msg, this->client_info_->get_combined_info().c_str(), ##__VA_ARGS__)
+
+#ifdef HELPER_LOG_PACKETS
+#define LOG_PACKET_RECEIVED(buffer) ESP_LOGVV(TAG, "Received frame: %s", format_hex_pretty(buffer).c_str())
+#define LOG_PACKET_SENDING(data, len) ESP_LOGVV(TAG, "Sending raw: %s", format_hex_pretty(data, len).c_str())
+#else
+#define LOG_PACKET_RECEIVED(buffer) ((void) 0)
+#define LOG_PACKET_SENDING(data, len) ((void) 0)
+#endif
+
+/// Initialize the frame helper, returns OK if successful.
+APIError APIPlaintextFrameHelper::init() {
+  APIError err = init_common_();
+  if (err != APIError::OK) {
+    return err;
+  }
+
+  state_ = State::DATA;
+  return APIError::OK;
+}
+APIError APIPlaintextFrameHelper::loop() {
+  if (state_ != State::DATA) {
+    return APIError::BAD_STATE;
+  }
+  // Use base class implementation for buffer sending
+  return APIFrameHelper::loop();
+}
+
+/** Read a packet into the rx_buf_. If successful, stores frame data in the frame parameter
+ *
+ * @param frame: The struct to hold the frame information in.
+ *   msg: store the parsed frame in that struct
+ *
+ * @return See APIError
+ *
+ * error API_ERROR_BAD_INDICATOR: Bad indicator byte at start of frame.
+ */
+APIError APIPlaintextFrameHelper::try_read_frame_(std::vector<uint8_t> *frame) {
+  if (frame == nullptr) {
+    HELPER_LOG("Bad argument for try_read_frame_");
+    return APIError::BAD_ARG;
+  }
+
+  // read header
+  while (!rx_header_parsed_) {
+    // Now that we know when the socket is ready, we can read up to 3 bytes
+    // into the rx_header_buf_ before we have to switch back to reading
+    // one byte at a time to ensure we don't read past the message and
+    // into the next one.
+
+    // Read directly into rx_header_buf_ at the current position
+    // Try to get to at least 3 bytes total (indicator + 2 varint bytes), then read one byte at a time
+    ssize_t received =
+        this->socket_->read(&rx_header_buf_[rx_header_buf_pos_], rx_header_buf_pos_ < 3 ? 3 - rx_header_buf_pos_ : 1);
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
+    }
+
+    // If this was the first read, validate the indicator byte
+    if (rx_header_buf_pos_ == 0 && received > 0) {
+      if (rx_header_buf_[0] != 0x00) {
+        state_ = State::FAILED;
+        HELPER_LOG("Bad indicator byte %u", rx_header_buf_[0]);
+        return APIError::BAD_INDICATOR;
+      }
+    }
+
+    rx_header_buf_pos_ += received;
+
+    // Check for buffer overflow
+    if (rx_header_buf_pos_ >= sizeof(rx_header_buf_)) {
+      state_ = State::FAILED;
+      HELPER_LOG("Header buffer overflow");
+      return APIError::BAD_DATA_PACKET;
+    }
+
+    // Need at least 3 bytes total (indicator + 2 varint bytes) before trying to parse
+    if (rx_header_buf_pos_ < 3) {
+      continue;
+    }
+
+    // At this point, we have at least 3 bytes total:
+    //   - Validated indicator byte (0x00) stored at position 0
+    //   - At least 2 bytes in the buffer for the varints
+    // Buffer layout:
+    //   [0]: indicator byte (0x00)
+    //   [1-3]: Message size varint (variable length)
+    //     - 2 bytes would only allow up to 16383, which is less than noise's UINT16_MAX (65535)
+    //     - 3 bytes allows up to 2097151, ensuring we support at least as much as noise
+    //   [2-5]: Message type varint (variable length)
+    // We now attempt to parse both varints. If either is incomplete,
+    // we'll continue reading more bytes.
+
+    // Skip indicator byte at position 0
+    uint8_t varint_pos = 1;
+    uint32_t consumed = 0;
+
+    auto msg_size_varint = ProtoVarInt::parse(&rx_header_buf_[varint_pos], rx_header_buf_pos_ - varint_pos, &consumed);
+    if (!msg_size_varint.has_value()) {
+      // not enough data there yet
+      continue;
+    }
+
+    if (msg_size_varint->as_uint32() > std::numeric_limits<uint16_t>::max()) {
+      state_ = State::FAILED;
+      HELPER_LOG("Bad packet: message size %" PRIu32 " exceeds maximum %u", msg_size_varint->as_uint32(),
+                 std::numeric_limits<uint16_t>::max());
+      return APIError::BAD_DATA_PACKET;
+    }
+    rx_header_parsed_len_ = msg_size_varint->as_uint16();
+
+    // Move to next varint position
+    varint_pos += consumed;
+
+    auto msg_type_varint = ProtoVarInt::parse(&rx_header_buf_[varint_pos], rx_header_buf_pos_ - varint_pos, &consumed);
+    if (!msg_type_varint.has_value()) {
+      // not enough data there yet
+      continue;
+    }
+    if (msg_type_varint->as_uint32() > std::numeric_limits<uint16_t>::max()) {
+      state_ = State::FAILED;
+      HELPER_LOG("Bad packet: message type %" PRIu32 " exceeds maximum %u", msg_type_varint->as_uint32(),
+                 std::numeric_limits<uint16_t>::max());
+      return APIError::BAD_DATA_PACKET;
+    }
+    rx_header_parsed_type_ = msg_type_varint->as_uint16();
+    rx_header_parsed_ = true;
+  }
+  // header reading done
+
+  // reserve space for body
+  if (rx_buf_.size() != rx_header_parsed_len_) {
+    rx_buf_.resize(rx_header_parsed_len_);
+  }
+
+  if (rx_buf_len_ < rx_header_parsed_len_) {
+    // more data to read
+    uint16_t to_read = rx_header_parsed_len_ - rx_buf_len_;
+    ssize_t received = this->socket_->read(&rx_buf_[rx_buf_len_], to_read);
+    APIError err = handle_socket_read_result_(received);
+    if (err != APIError::OK) {
+      return err;
+    }
+    rx_buf_len_ += static_cast<uint16_t>(received);
+    if (static_cast<uint16_t>(received) != to_read) {
+      // not all read
+      return APIError::WOULD_BLOCK;
+    }
+  }
+
+  LOG_PACKET_RECEIVED(rx_buf_);
+  *frame = std::move(rx_buf_);
+  // consume msg
+  rx_buf_ = {};
+  rx_buf_len_ = 0;
+  rx_header_buf_pos_ = 0;
+  rx_header_parsed_ = false;
+  return APIError::OK;
+}
+APIError APIPlaintextFrameHelper::read_packet(ReadPacketBuffer *buffer) {
+  APIError aerr;
+
+  if (state_ != State::DATA) {
+    return APIError::WOULD_BLOCK;
+  }
+
+  std::vector<uint8_t> frame;
+  aerr = try_read_frame_(&frame);
+  if (aerr != APIError::OK) {
+    if (aerr == APIError::BAD_INDICATOR) {
+      // Make sure to tell the remote that we don't
+      // understand the indicator byte so it knows
+      // we do not support it.
+      struct iovec iov[1];
+      // The \x00 first byte is the marker for plaintext.
+      //
+      // The remote will know how to handle the indicator byte,
+      // but it likely won't understand the rest of the message.
+      //
+      // We must send at least 3 bytes to be read, so we add
+      // a message after the indicator byte to ensures its long
+      // enough and can aid in debugging.
+      const char msg[] = "\x00"
+                         "Bad indicator byte";
+      iov[0].iov_base = (void *) msg;
+      iov[0].iov_len = 19;
+      this->write_raw_(iov, 1, 19);
+    }
+    return aerr;
+  }
+
+  buffer->container = std::move(frame);
+  buffer->data_offset = 0;
+  buffer->data_len = rx_header_parsed_len_;
+  buffer->type = rx_header_parsed_type_;
+  return APIError::OK;
+}
+APIError APIPlaintextFrameHelper::write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) {
+  PacketInfo packet{type, 0, static_cast<uint16_t>(buffer.get_buffer()->size() - frame_header_padding_)};
+  return write_protobuf_packets(buffer, std::span<const PacketInfo>(&packet, 1));
+}
+
+APIError APIPlaintextFrameHelper::write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) {
+  if (state_ != State::DATA) {
+    return APIError::BAD_STATE;
+  }
+
+  if (packets.empty()) {
+    return APIError::OK;
+  }
+
+  std::vector<uint8_t> *raw_buffer = buffer.get_buffer();
+  uint8_t *buffer_data = raw_buffer->data();  // Cache buffer pointer
+
+  this->reusable_iovs_.clear();
+  this->reusable_iovs_.reserve(packets.size());
+  uint16_t total_write_len = 0;
+
+  for (const auto &packet : packets) {
+    // Calculate varint sizes for header layout
+    uint8_t size_varint_len = api::ProtoSize::varint(static_cast<uint32_t>(packet.payload_size));
+    uint8_t type_varint_len = api::ProtoSize::varint(static_cast<uint32_t>(packet.message_type));
+    uint8_t total_header_len = 1 + size_varint_len + type_varint_len;
+
+    // Calculate where to start writing the header
+    // The header starts at the latest possible position to minimize unused padding
+    //
+    // Example 1 (small values): total_header_len = 3, header_offset = 6 - 3 = 3
+    // [0-2]  - Unused padding
+    // [3]    - 0x00 indicator byte
+    // [4]    - Payload size varint (1 byte, for sizes 0-127)
+    // [5]    - Message type varint (1 byte, for types 0-127)
+    // [6...] - Actual payload data
+    //
+    // Example 2 (medium values): total_header_len = 4, header_offset = 6 - 4 = 2
+    // [0-1]  - Unused padding
+    // [2]    - 0x00 indicator byte
+    // [3-4]  - Payload size varint (2 bytes, for sizes 128-16383)
+    // [5]    - Message type varint (1 byte, for types 0-127)
+    // [6...] - Actual payload data
+    //
+    // Example 3 (large values): total_header_len = 6, header_offset = 6 - 6 = 0
+    // [0]    - 0x00 indicator byte
+    // [1-3]  - Payload size varint (3 bytes, for sizes 16384-2097151)
+    // [4-5]  - Message type varint (2 bytes, for types 128-32767)
+    // [6...] - Actual payload data
+    //
+    // The message starts at offset + frame_header_padding_
+    // So we write the header starting at offset + frame_header_padding_ - total_header_len
+    uint8_t *buf_start = buffer_data + packet.offset;
+    uint32_t header_offset = frame_header_padding_ - total_header_len;
+
+    // Write the plaintext header
+    buf_start[header_offset] = 0x00;  // indicator
+
+    // Encode varints directly into buffer
+    ProtoVarInt(packet.payload_size).encode_to_buffer_unchecked(buf_start + header_offset + 1, size_varint_len);
+    ProtoVarInt(packet.message_type)
+        .encode_to_buffer_unchecked(buf_start + header_offset + 1 + size_varint_len, type_varint_len);
+
+    // Add iovec for this packet (header + payload)
+    size_t packet_len = static_cast<size_t>(total_header_len + packet.payload_size);
+    this->reusable_iovs_.push_back({buf_start + header_offset, packet_len});
+    total_write_len += packet_len;
+  }
+
+  // Send all packets in one writev call
+  return write_raw_(this->reusable_iovs_.data(), this->reusable_iovs_.size(), total_write_len);
+}
+
+}  // namespace esphome::api
+#endif  // USE_API_PLAINTEXT
+#endif  // USE_API

esphome/components/api/api_frame_helper_plaintext.h

@@ -0,0 +1,53 @@
+#pragma once
+#include "api_frame_helper.h"
+#ifdef USE_API
+#ifdef USE_API_PLAINTEXT
+
+namespace esphome::api {
+
+class APIPlaintextFrameHelper : public APIFrameHelper {
+ public:
+  APIPlaintextFrameHelper(std::unique_ptr<socket::Socket> socket, const ClientInfo *client_info)
+      : APIFrameHelper(std::move(socket), client_info) {
+    // Plaintext header structure (worst case):
+    // Pos 0: indicator (0x00)
+    // Pos 1-3: payload size varint (up to 3 bytes)
+    // Pos 4-5: message type varint (up to 2 bytes)
+    // Pos 6+: actual payload data
+    frame_header_padding_ = 6;
+  }
+  ~APIPlaintextFrameHelper() override = default;
+  APIError init() override;
+  APIError loop() override;
+  APIError read_packet(ReadPacketBuffer *buffer) override;
+  APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
+  APIError write_protobuf_packets(ProtoWriteBuffer buffer, std::span<const PacketInfo> packets) override;
+  uint8_t frame_header_padding() override { return frame_header_padding_; }
+  // Get the frame footer size required by this protocol
+  uint8_t frame_footer_size() override { return frame_footer_size_; }
+
+ protected:
+  APIError try_read_frame_(std::vector<uint8_t> *frame);
+
+  // Group 2-byte aligned types
+  uint16_t rx_header_parsed_type_ = 0;
+  uint16_t rx_header_parsed_len_ = 0;
+
+  // Group 1-byte types together
+  // Fixed-size header buffer for plaintext protocol:
+  // We now store the indicator byte + the two varints.
+  // To match noise protocol's maximum message size (UINT16_MAX = 65535), we need:
+  // 1 byte for indicator + 3 bytes for message size varint (supports up to 2097151) + 2 bytes for message type varint
+  //
+  // While varints could theoretically be up to 10 bytes each for 64-bit values,
+  // attempting to process messages with headers that large would likely crash the
+  // ESP32 due to memory constraints.
+  uint8_t rx_header_buf_[6];  // 1 byte indicator + 5 bytes for varints (3 for size + 2 for type)
+  uint8_t rx_header_buf_pos_ = 0;
+  bool rx_header_parsed_ = false;
+  // 8 bytes total, no padding needed
+};
+
+}  // namespace esphome::api
+#endif  // USE_API_PLAINTEXT
+#endif  // USE_API

esphome/components/api/api_noise_context.h

@@ -3,8 +3,7 @@
 #include <cstdint>
 #include "esphome/core/defines.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 #ifdef USE_API_NOISE
 using psk_t = std::array<uint8_t, 32>;
@@ -28,5 +27,4 @@ class APINoiseContext {
 };
 #endif  // USE_API_NOISE
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api

esphome/components/api/api_options.proto

@@ -27,4 +27,5 @@ extend google.protobuf.MessageOptions {
 extend google.protobuf.FieldOptions {
     optional string field_ifdef = 1042;
     optional uint32 fixed_array_size = 50007;
+    optional bool no_zero_copy = 50008 [default=false];
 }

esphome/components/api/api_pb2_service.cpp

@@ -3,8 +3,7 @@
 #include "api_pb2_service.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 static const char *const TAG = "api.service";
 
@@ -16,7 +15,7 @@ void APIServerConnectionBase::log_send_message_(const char *name, const std::str
 
 void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type, uint8_t *msg_data) {
   switch (msg_type) {
-    case 1: {
+    case HelloRequest::MESSAGE_TYPE: {
       HelloRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -25,7 +24,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       this->on_hello_request(msg);
       break;
     }
-    case 3: {
+    case ConnectRequest::MESSAGE_TYPE: {
       ConnectRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -34,70 +33,70 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       this->on_connect_request(msg);
       break;
     }
-    case 5: {
+    case DisconnectRequest::MESSAGE_TYPE: {
       DisconnectRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_disconnect_request: %s", msg.dump().c_str());
 #endif
       this->on_disconnect_request(msg);
       break;
     }
-    case 6: {
+    case DisconnectResponse::MESSAGE_TYPE: {
       DisconnectResponse msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_disconnect_response: %s", msg.dump().c_str());
 #endif
       this->on_disconnect_response(msg);
       break;
     }
-    case 7: {
+    case PingRequest::MESSAGE_TYPE: {
       PingRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_ping_request: %s", msg.dump().c_str());
 #endif
       this->on_ping_request(msg);
       break;
     }
-    case 8: {
+    case PingResponse::MESSAGE_TYPE: {
       PingResponse msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_ping_response: %s", msg.dump().c_str());
 #endif
       this->on_ping_response(msg);
       break;
     }
-    case 9: {
+    case DeviceInfoRequest::MESSAGE_TYPE: {
       DeviceInfoRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_device_info_request: %s", msg.dump().c_str());
 #endif
       this->on_device_info_request(msg);
       break;
     }
-    case 11: {
+    case ListEntitiesRequest::MESSAGE_TYPE: {
       ListEntitiesRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_list_entities_request: %s", msg.dump().c_str());
 #endif
       this->on_list_entities_request(msg);
       break;
     }
-    case 20: {
+    case SubscribeStatesRequest::MESSAGE_TYPE: {
       SubscribeStatesRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_subscribe_states_request: %s", msg.dump().c_str());
 #endif
       this->on_subscribe_states_request(msg);
       break;
     }
-    case 28: {
+    case SubscribeLogsRequest::MESSAGE_TYPE: {
       SubscribeLogsRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -107,7 +106,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       break;
     }
 #ifdef USE_COVER
-    case 30: {
+    case CoverCommandRequest::MESSAGE_TYPE: {
       CoverCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -118,7 +117,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_FAN
-    case 31: {
+    case FanCommandRequest::MESSAGE_TYPE: {
       FanCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -129,7 +128,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_LIGHT
-    case 32: {
+    case LightCommandRequest::MESSAGE_TYPE: {
       LightCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -140,7 +139,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_SWITCH
-    case 33: {
+    case SwitchCommandRequest::MESSAGE_TYPE: {
       SwitchCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -150,25 +149,27 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       break;
     }
 #endif
-    case 34: {
+#ifdef USE_API_HOMEASSISTANT_SERVICES
+    case SubscribeHomeassistantServicesRequest::MESSAGE_TYPE: {
       SubscribeHomeassistantServicesRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_subscribe_homeassistant_services_request: %s", msg.dump().c_str());
 #endif
       this->on_subscribe_homeassistant_services_request(msg);
       break;
     }
-    case 36: {
+#endif
+    case GetTimeRequest::MESSAGE_TYPE: {
       GetTimeRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_get_time_request: %s", msg.dump().c_str());
 #endif
       this->on_get_time_request(msg);
       break;
     }
-    case 37: {
+    case GetTimeResponse::MESSAGE_TYPE: {
       GetTimeResponse msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -177,16 +178,19 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       this->on_get_time_response(msg);
       break;
     }
-    case 38: {
+#ifdef USE_API_HOMEASSISTANT_STATES
+    case SubscribeHomeAssistantStatesRequest::MESSAGE_TYPE: {
       SubscribeHomeAssistantStatesRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_subscribe_home_assistant_states_request: %s", msg.dump().c_str());
 #endif
       this->on_subscribe_home_assistant_states_request(msg);
       break;
     }
-    case 40: {
+#endif
+#ifdef USE_API_HOMEASSISTANT_STATES
+    case HomeAssistantStateResponse::MESSAGE_TYPE: {
       HomeAssistantStateResponse msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -195,8 +199,9 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
       this->on_home_assistant_state_response(msg);
       break;
     }
+#endif
 #ifdef USE_API_SERVICES
-    case 42: {
+    case ExecuteServiceRequest::MESSAGE_TYPE: {
       ExecuteServiceRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -207,7 +212,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_CAMERA
-    case 45: {
+    case CameraImageRequest::MESSAGE_TYPE: {
       CameraImageRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -218,7 +223,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_CLIMATE
-    case 48: {
+    case ClimateCommandRequest::MESSAGE_TYPE: {
       ClimateCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -229,7 +234,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_NUMBER
-    case 51: {
+    case NumberCommandRequest::MESSAGE_TYPE: {
       NumberCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -240,7 +245,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_SELECT
-    case 54: {
+    case SelectCommandRequest::MESSAGE_TYPE: {
       SelectCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -251,7 +256,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_SIREN
-    case 57: {
+    case SirenCommandRequest::MESSAGE_TYPE: {
       SirenCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -262,7 +267,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_LOCK
-    case 60: {
+    case LockCommandRequest::MESSAGE_TYPE: {
       LockCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -273,7 +278,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BUTTON
-    case 62: {
+    case ButtonCommandRequest::MESSAGE_TYPE: {
       ButtonCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -284,7 +289,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_MEDIA_PLAYER
-    case 65: {
+    case MediaPlayerCommandRequest::MESSAGE_TYPE: {
       MediaPlayerCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -295,7 +300,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 66: {
+    case SubscribeBluetoothLEAdvertisementsRequest::MESSAGE_TYPE: {
       SubscribeBluetoothLEAdvertisementsRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -306,7 +311,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 68: {
+    case BluetoothDeviceRequest::MESSAGE_TYPE: {
       BluetoothDeviceRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -317,7 +322,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 70: {
+    case BluetoothGATTGetServicesRequest::MESSAGE_TYPE: {
       BluetoothGATTGetServicesRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -328,7 +333,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 73: {
+    case BluetoothGATTReadRequest::MESSAGE_TYPE: {
       BluetoothGATTReadRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -339,7 +344,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 75: {
+    case BluetoothGATTWriteRequest::MESSAGE_TYPE: {
       BluetoothGATTWriteRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -350,7 +355,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 76: {
+    case BluetoothGATTReadDescriptorRequest::MESSAGE_TYPE: {
       BluetoothGATTReadDescriptorRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -361,7 +366,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 77: {
+    case BluetoothGATTWriteDescriptorRequest::MESSAGE_TYPE: {
       BluetoothGATTWriteDescriptorRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -372,7 +377,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 78: {
+    case BluetoothGATTNotifyRequest::MESSAGE_TYPE: {
       BluetoothGATTNotifyRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -383,9 +388,9 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 80: {
+    case SubscribeBluetoothConnectionsFreeRequest::MESSAGE_TYPE: {
       SubscribeBluetoothConnectionsFreeRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_subscribe_bluetooth_connections_free_request: %s", msg.dump().c_str());
 #endif
@@ -394,9 +399,9 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 87: {
+    case UnsubscribeBluetoothLEAdvertisementsRequest::MESSAGE_TYPE: {
       UnsubscribeBluetoothLEAdvertisementsRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_unsubscribe_bluetooth_le_advertisements_request: %s", msg.dump().c_str());
 #endif
@@ -405,7 +410,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 89: {
+    case SubscribeVoiceAssistantRequest::MESSAGE_TYPE: {
       SubscribeVoiceAssistantRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -416,7 +421,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 91: {
+    case VoiceAssistantResponse::MESSAGE_TYPE: {
       VoiceAssistantResponse msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -427,7 +432,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 92: {
+    case VoiceAssistantEventResponse::MESSAGE_TYPE: {
       VoiceAssistantEventResponse msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -438,7 +443,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_ALARM_CONTROL_PANEL
-    case 96: {
+    case AlarmControlPanelCommandRequest::MESSAGE_TYPE: {
       AlarmControlPanelCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -449,7 +454,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_TEXT
-    case 99: {
+    case TextCommandRequest::MESSAGE_TYPE: {
       TextCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -460,7 +465,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_DATETIME_DATE
-    case 102: {
+    case DateCommandRequest::MESSAGE_TYPE: {
       DateCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -471,7 +476,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_DATETIME_TIME
-    case 105: {
+    case TimeCommandRequest::MESSAGE_TYPE: {
       TimeCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -482,7 +487,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 106: {
+    case VoiceAssistantAudio::MESSAGE_TYPE: {
       VoiceAssistantAudio msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -493,7 +498,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VALVE
-    case 111: {
+    case ValveCommandRequest::MESSAGE_TYPE: {
       ValveCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -504,7 +509,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_DATETIME_DATETIME
-    case 114: {
+    case DateTimeCommandRequest::MESSAGE_TYPE: {
       DateTimeCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -515,7 +520,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 115: {
+    case VoiceAssistantTimerEventResponse::MESSAGE_TYPE: {
       VoiceAssistantTimerEventResponse msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -526,7 +531,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_UPDATE
-    case 118: {
+    case UpdateCommandRequest::MESSAGE_TYPE: {
       UpdateCommandRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -537,7 +542,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 119: {
+    case VoiceAssistantAnnounceRequest::MESSAGE_TYPE: {
       VoiceAssistantAnnounceRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -548,9 +553,9 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 121: {
+    case VoiceAssistantConfigurationRequest::MESSAGE_TYPE: {
       VoiceAssistantConfigurationRequest msg;
-      msg.decode(msg_data, msg_size);
+      // Empty message: no decode needed
 #ifdef HAS_PROTO_MESSAGE_DUMP
       ESP_LOGVV(TAG, "on_voice_assistant_configuration_request: %s", msg.dump().c_str());
 #endif
@@ -559,7 +564,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_VOICE_ASSISTANT
-    case 123: {
+    case VoiceAssistantSetConfiguration::MESSAGE_TYPE: {
       VoiceAssistantSetConfiguration msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -570,7 +575,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_API_NOISE
-    case 124: {
+    case NoiseEncryptionSetKeyRequest::MESSAGE_TYPE: {
       NoiseEncryptionSetKeyRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -581,7 +586,7 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
     }
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-    case 127: {
+    case BluetoothScannerSetModeRequest::MESSAGE_TYPE: {
       BluetoothScannerSetModeRequest msg;
       msg.decode(msg_data, msg_size);
 #ifdef HAS_PROTO_MESSAGE_DUMP
@@ -597,35 +602,28 @@ void APIServerConnectionBase::read_message(uint32_t msg_size, uint32_t msg_type,
 }
 
 void APIServerConnection::on_hello_request(const HelloRequest &msg) {
-  HelloResponse ret = this->hello(msg);
-  if (!this->send_message(ret, HelloResponse::MESSAGE_TYPE)) {
+  if (!this->send_hello_response(msg)) {
     this->on_fatal_error();
   }
 }
 void APIServerConnection::on_connect_request(const ConnectRequest &msg) {
-  ConnectResponse ret = this->connect(msg);
-  if (!this->send_message(ret, ConnectResponse::MESSAGE_TYPE)) {
+  if (!this->send_connect_response(msg)) {
     this->on_fatal_error();
   }
 }
 void APIServerConnection::on_disconnect_request(const DisconnectRequest &msg) {
-  DisconnectResponse ret = this->disconnect(msg);
-  if (!this->send_message(ret, DisconnectResponse::MESSAGE_TYPE)) {
+  if (!this->send_disconnect_response(msg)) {
     this->on_fatal_error();
   }
 }
 void APIServerConnection::on_ping_request(const PingRequest &msg) {
-  PingResponse ret = this->ping(msg);
-  if (!this->send_message(ret, PingResponse::MESSAGE_TYPE)) {
+  if (!this->send_ping_response(msg)) {
     this->on_fatal_error();
   }
 }
 void APIServerConnection::on_device_info_request(const DeviceInfoRequest &msg) {
-  if (this->check_connection_setup_()) {
-    DeviceInfoResponse ret = this->device_info(msg);
-    if (!this->send_message(ret, DeviceInfoResponse::MESSAGE_TYPE)) {
-      this->on_fatal_error();
-    }
+  if (this->check_connection_setup_() && !this->send_device_info_response(msg)) {
+    this->on_fatal_error();
   }
 }
 void APIServerConnection::on_list_entities_request(const ListEntitiesRequest &msg) {
@@ -643,23 +641,24 @@ void APIServerConnection::on_subscribe_logs_request(const SubscribeLogsRequest &
     this->subscribe_logs(msg);
   }
 }
+#ifdef USE_API_HOMEASSISTANT_SERVICES
 void APIServerConnection::on_subscribe_homeassistant_services_request(
     const SubscribeHomeassistantServicesRequest &msg) {
   if (this->check_authenticated_()) {
     this->subscribe_homeassistant_services(msg);
   }
 }
+#endif
+#ifdef USE_API_HOMEASSISTANT_STATES
 void APIServerConnection::on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &msg) {
   if (this->check_authenticated_()) {
     this->subscribe_home_assistant_states(msg);
   }
 }
+#endif
 void APIServerConnection::on_get_time_request(const GetTimeRequest &msg) {
-  if (this->check_connection_setup_()) {
-    GetTimeResponse ret = this->get_time(msg);
-    if (!this->send_message(ret, GetTimeResponse::MESSAGE_TYPE)) {
-      this->on_fatal_error();
-    }
+  if (this->check_connection_setup_() && !this->send_get_time_response(msg)) {
+    this->on_fatal_error();
   }
 }
 #ifdef USE_API_SERVICES
@@ -671,11 +670,8 @@ void APIServerConnection::on_execute_service_request(const ExecuteServiceRequest
 #endif
 #ifdef USE_API_NOISE
 void APIServerConnection::on_noise_encryption_set_key_request(const NoiseEncryptionSetKeyRequest &msg) {
-  if (this->check_authenticated_()) {
-    NoiseEncryptionSetKeyResponse ret = this->noise_encryption_set_key(msg);
-    if (!this->send_message(ret, NoiseEncryptionSetKeyResponse::MESSAGE_TYPE)) {
-      this->on_fatal_error();
-    }
+  if (this->check_authenticated_() && !this->send_noise_encryption_set_key_response(msg)) {
+    this->on_fatal_error();
   }
 }
 #endif
@@ -865,11 +861,8 @@ void APIServerConnection::on_bluetooth_gatt_notify_request(const BluetoothGATTNo
 #ifdef USE_BLUETOOTH_PROXY
 void APIServerConnection::on_subscribe_bluetooth_connections_free_request(
     const SubscribeBluetoothConnectionsFreeRequest &msg) {
-  if (this->check_authenticated_()) {
-    BluetoothConnectionsFreeResponse ret = this->subscribe_bluetooth_connections_free(msg);
-    if (!this->send_message(ret, BluetoothConnectionsFreeResponse::MESSAGE_TYPE)) {
-      this->on_fatal_error();
-    }
+  if (this->check_authenticated_() && !this->send_subscribe_bluetooth_connections_free_response(msg)) {
+    this->on_fatal_error();
   }
 }
 #endif
@@ -897,11 +890,8 @@ void APIServerConnection::on_subscribe_voice_assistant_request(const SubscribeVo
 #endif
 #ifdef USE_VOICE_ASSISTANT
 void APIServerConnection::on_voice_assistant_configuration_request(const VoiceAssistantConfigurationRequest &msg) {
-  if (this->check_authenticated_()) {
-    VoiceAssistantConfigurationResponse ret = this->voice_assistant_get_configuration(msg);
-    if (!this->send_message(ret, VoiceAssistantConfigurationResponse::MESSAGE_TYPE)) {
-      this->on_fatal_error();
-    }
+  if (this->check_authenticated_() && !this->send_voice_assistant_get_configuration_response(msg)) {
+    this->on_fatal_error();
   }
 }
 #endif
@@ -920,5 +910,4 @@ void APIServerConnection::on_alarm_control_panel_command_request(const AlarmCont
 }
 #endif
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api

esphome/components/api/api_pb2_service.h

@@ -6,8 +6,7 @@
 
 #include "api_pb2.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 class APIServerConnectionBase : public ProtoService {
  public:
@@ -61,11 +60,17 @@ class APIServerConnectionBase : public ProtoService {
   virtual void on_noise_encryption_set_key_request(const NoiseEncryptionSetKeyRequest &value){};
 #endif
 
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   virtual void on_subscribe_homeassistant_services_request(const SubscribeHomeassistantServicesRequest &value){};
+#endif
 
+#ifdef USE_API_HOMEASSISTANT_STATES
   virtual void on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &value){};
+#endif
 
+#ifdef USE_API_HOMEASSISTANT_STATES
   virtual void on_home_assistant_state_response(const HomeAssistantStateResponse &value){};
+#endif
   virtual void on_get_time_request(const GetTimeRequest &value){};
   virtual void on_get_time_response(const GetTimeResponse &value){};
 
@@ -207,22 +212,26 @@ class APIServerConnectionBase : public ProtoService {
 
 class APIServerConnection : public APIServerConnectionBase {
  public:
-  virtual HelloResponse hello(const HelloRequest &msg) = 0;
-  virtual ConnectResponse connect(const ConnectRequest &msg) = 0;
-  virtual DisconnectResponse disconnect(const DisconnectRequest &msg) = 0;
-  virtual PingResponse ping(const PingRequest &msg) = 0;
-  virtual DeviceInfoResponse device_info(const DeviceInfoRequest &msg) = 0;
+  virtual bool send_hello_response(const HelloRequest &msg) = 0;
+  virtual bool send_connect_response(const ConnectRequest &msg) = 0;
+  virtual bool send_disconnect_response(const DisconnectRequest &msg) = 0;
+  virtual bool send_ping_response(const PingRequest &msg) = 0;
+  virtual bool send_device_info_response(const DeviceInfoRequest &msg) = 0;
   virtual void list_entities(const ListEntitiesRequest &msg) = 0;
   virtual void subscribe_states(const SubscribeStatesRequest &msg) = 0;
   virtual void subscribe_logs(const SubscribeLogsRequest &msg) = 0;
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   virtual void subscribe_homeassistant_services(const SubscribeHomeassistantServicesRequest &msg) = 0;
+#endif
+#ifdef USE_API_HOMEASSISTANT_STATES
   virtual void subscribe_home_assistant_states(const SubscribeHomeAssistantStatesRequest &msg) = 0;
-  virtual GetTimeResponse get_time(const GetTimeRequest &msg) = 0;
+#endif
+  virtual bool send_get_time_response(const GetTimeRequest &msg) = 0;
 #ifdef USE_API_SERVICES
   virtual void execute_service(const ExecuteServiceRequest &msg) = 0;
 #endif
 #ifdef USE_API_NOISE
-  virtual NoiseEncryptionSetKeyResponse noise_encryption_set_key(const NoiseEncryptionSetKeyRequest &msg) = 0;
+  virtual bool send_noise_encryption_set_key_response(const NoiseEncryptionSetKeyRequest &msg) = 0;
 #endif
 #ifdef USE_BUTTON
   virtual void button_command(const ButtonCommandRequest &msg) = 0;
@@ -303,7 +312,7 @@ class APIServerConnection : public APIServerConnectionBase {
   virtual void bluetooth_gatt_notify(const BluetoothGATTNotifyRequest &msg) = 0;
 #endif
 #ifdef USE_BLUETOOTH_PROXY
-  virtual BluetoothConnectionsFreeResponse subscribe_bluetooth_connections_free(
+  virtual bool send_subscribe_bluetooth_connections_free_response(
       const SubscribeBluetoothConnectionsFreeRequest &msg) = 0;
 #endif
 #ifdef USE_BLUETOOTH_PROXY
@@ -316,8 +325,7 @@ class APIServerConnection : public APIServerConnectionBase {
   virtual void subscribe_voice_assistant(const SubscribeVoiceAssistantRequest &msg) = 0;
 #endif
 #ifdef USE_VOICE_ASSISTANT
-  virtual VoiceAssistantConfigurationResponse voice_assistant_get_configuration(
-      const VoiceAssistantConfigurationRequest &msg) = 0;
+  virtual bool send_voice_assistant_get_configuration_response(const VoiceAssistantConfigurationRequest &msg) = 0;
 #endif
 #ifdef USE_VOICE_ASSISTANT
   virtual void voice_assistant_set_configuration(const VoiceAssistantSetConfiguration &msg) = 0;
@@ -334,8 +342,12 @@ class APIServerConnection : public APIServerConnectionBase {
   void on_list_entities_request(const ListEntitiesRequest &msg) override;
   void on_subscribe_states_request(const SubscribeStatesRequest &msg) override;
   void on_subscribe_logs_request(const SubscribeLogsRequest &msg) override;
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   void on_subscribe_homeassistant_services_request(const SubscribeHomeassistantServicesRequest &msg) override;
+#endif
+#ifdef USE_API_HOMEASSISTANT_STATES
   void on_subscribe_home_assistant_states_request(const SubscribeHomeAssistantStatesRequest &msg) override;
+#endif
   void on_get_time_request(const GetTimeRequest &msg) override;
 #ifdef USE_API_SERVICES
   void on_execute_service_request(const ExecuteServiceRequest &msg) override;
@@ -445,5 +457,4 @@ class APIServerConnection : public APIServerConnectionBase {
 #endif
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api

esphome/components/api/api_server.cpp

@@ -16,8 +16,7 @@
 
 #include <algorithm>
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 static const char *const TAG = "api";
 
@@ -184,9 +183,9 @@ void APIServer::loop() {
 
     // Rare case: handle disconnection
 #ifdef USE_API_CLIENT_DISCONNECTED_TRIGGER
-    this->client_disconnected_trigger_->trigger(client->client_info_, client->client_peername_);
+    this->client_disconnected_trigger_->trigger(client->client_info_.name, client->client_info_.peername);
 #endif
-    ESP_LOGV(TAG, "Remove connection %s", client->client_info_.c_str());
+    ESP_LOGV(TAG, "Remove connection %s", client->client_info_.name.c_str());
 
     // Swap with the last element and pop (avoids expensive vector shifts)
     if (client_index < this->clients_.size() - 1) {
@@ -370,12 +369,15 @@ void APIServer::set_password(const std::string &password) { this->password_ = pa
 
 void APIServer::set_batch_delay(uint16_t batch_delay) { this->batch_delay_ = batch_delay; }
 
+#ifdef USE_API_HOMEASSISTANT_SERVICES
 void APIServer::send_homeassistant_service_call(const HomeassistantServiceResponse &call) {
   for (auto &client : this->clients_) {
     client->send_homeassistant_service_call(call);
   }
 }
+#endif
 
+#ifdef USE_API_HOMEASSISTANT_STATES
 void APIServer::subscribe_home_assistant_state(std::string entity_id, optional<std::string> attribute,
                                                std::function<void(std::string)> f) {
   this->state_subs_.push_back(HomeAssistantStateSubscription{
@@ -399,6 +401,7 @@ void APIServer::get_home_assistant_state(std::string entity_id, optional<std::st
 const std::vector<APIServer::HomeAssistantStateSubscription> &APIServer::get_state_subs() const {
   return this->state_subs_;
 }
+#endif
 
 uint16_t APIServer::get_port() const { return this->port_; }
 
@@ -483,6 +486,5 @@ bool APIServer::teardown() {
   return this->clients_.empty();
 }
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/api_server.h

@@ -18,8 +18,7 @@
 
 #include <vector>
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 #ifdef USE_API_NOISE
 struct SavedNoisePsk {
@@ -107,7 +106,9 @@ class APIServer : public Component, public Controller {
 #ifdef USE_MEDIA_PLAYER
   void on_media_player_update(media_player::MediaPlayer *obj) override;
 #endif
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   void send_homeassistant_service_call(const HomeassistantServiceResponse &call);
+#endif
 #ifdef USE_API_SERVICES
   void register_user_service(UserServiceDescriptor *descriptor) { this->user_services_.push_back(descriptor); }
 #endif
@@ -127,6 +128,7 @@ class APIServer : public Component, public Controller {
 
   bool is_connected() const;
 
+#ifdef USE_API_HOMEASSISTANT_STATES
   struct HomeAssistantStateSubscription {
     std::string entity_id;
     optional<std::string> attribute;
@@ -139,6 +141,7 @@ class APIServer : public Component, public Controller {
   void get_home_assistant_state(std::string entity_id, optional<std::string> attribute,
                                 std::function<void(std::string)> f);
   const std::vector<HomeAssistantStateSubscription> &get_state_subs() const;
+#endif
 #ifdef USE_API_SERVICES
   const std::vector<UserServiceDescriptor *> &get_user_services() const { return this->user_services_; }
 #endif
@@ -172,7 +175,9 @@ class APIServer : public Component, public Controller {
   std::string password_;
 #endif
   std::vector<uint8_t> shared_write_buffer_;  // Shared proto write buffer for all connections
+#ifdef USE_API_HOMEASSISTANT_STATES
   std::vector<HomeAssistantStateSubscription> state_subs_;
+#endif
 #ifdef USE_API_SERVICES
   std::vector<UserServiceDescriptor *> user_services_;
 #endif
@@ -196,6 +201,5 @@ template<typename... Ts> class APIConnectedCondition : public Condition<Ts...> {
   bool check(Ts... x) override { return global_api_server->is_connected(); }
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/client.py

@@ -14,6 +14,8 @@ with warnings.catch_warnings():
     from aioesphomeapi import APIClient, parse_log_message
     from aioesphomeapi.log_runner import async_run
 
+import contextlib
+
 from esphome.const import CONF_KEY, CONF_PASSWORD, CONF_PORT, __version__
 from esphome.core import CORE
 
@@ -66,7 +68,5 @@ async def async_run_logs(config: dict[str, Any], address: str) -> None:
 
 def run_logs(config: dict[str, Any], address: str) -> None:
     """Run the logs command."""
-    try:
+    with contextlib.suppress(KeyboardInterrupt):
         asyncio.run(async_run_logs(config, address))
-    except KeyboardInterrupt:
-        pass

esphome/components/api/custom_api_device.h

@@ -6,8 +6,7 @@
 #ifdef USE_API_SERVICES
 #include "user_services.h"
 #endif
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 #ifdef USE_API_SERVICES
 template<typename T, typename... Ts> class CustomAPIDeviceService : public UserServiceBase<Ts...> {
@@ -84,6 +83,7 @@ class CustomAPIDevice {
   }
 #endif
 
+#ifdef USE_API_HOMEASSISTANT_STATES
   /** Subscribe to the state (or attribute state) of an entity from Home Assistant.
    *
    * Usage:
@@ -135,7 +135,9 @@ class CustomAPIDevice {
     auto f = std::bind(callback, (T *) this, entity_id, std::placeholders::_1);
     global_api_server->subscribe_home_assistant_state(entity_id, optional<std::string>(attribute), f);
   }
+#endif
 
+#ifdef USE_API_HOMEASSISTANT_SERVICES
   /** Call a Home Assistant service from ESPHome.
    *
    * Usage:
@@ -148,7 +150,7 @@ class CustomAPIDevice {
    */
   void call_homeassistant_service(const std::string &service_name) {
     HomeassistantServiceResponse resp;
-    resp.service = service_name;
+    resp.set_service(StringRef(service_name));
     global_api_server->send_homeassistant_service_call(resp);
   }
 
@@ -168,12 +170,12 @@ class CustomAPIDevice {
    */
   void call_homeassistant_service(const std::string &service_name, const std::map<std::string, std::string> &data) {
     HomeassistantServiceResponse resp;
-    resp.service = service_name;
+    resp.set_service(StringRef(service_name));
     for (auto &it : data) {
-      HomeassistantServiceMap kv;
-      kv.key = it.first;
+      resp.data.emplace_back();
+      auto &kv = resp.data.back();
+      kv.set_key(StringRef(it.first));
       kv.value = it.second;
-      resp.data.push_back(kv);
     }
     global_api_server->send_homeassistant_service_call(resp);
   }
@@ -190,7 +192,7 @@ class CustomAPIDevice {
    */
   void fire_homeassistant_event(const std::string &event_name) {
     HomeassistantServiceResponse resp;
-    resp.service = event_name;
+    resp.set_service(StringRef(event_name));
     resp.is_event = true;
     global_api_server->send_homeassistant_service_call(resp);
   }
@@ -210,18 +212,18 @@ class CustomAPIDevice {
    */
   void fire_homeassistant_event(const std::string &service_name, const std::map<std::string, std::string> &data) {
     HomeassistantServiceResponse resp;
-    resp.service = service_name;
+    resp.set_service(StringRef(service_name));
     resp.is_event = true;
     for (auto &it : data) {
-      HomeassistantServiceMap kv;
-      kv.key = it.first;
+      resp.data.emplace_back();
+      auto &kv = resp.data.back();
+      kv.set_key(StringRef(it.first));
       kv.value = it.second;
-      resp.data.push_back(kv);
     }
     global_api_server->send_homeassistant_service_call(resp);
   }
+#endif
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/homeassistant_service.h

@@ -2,13 +2,13 @@
 
 #include "api_server.h"
 #ifdef USE_API
+#ifdef USE_API_HOMEASSISTANT_SERVICES
 #include "api_pb2.h"
 #include "esphome/core/automation.h"
 #include "esphome/core/helpers.h"
 #include <vector>
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 template<typename... X> class TemplatableStringValue : public TemplatableValue<std::string, X...> {
  private:
@@ -36,6 +36,9 @@ template<typename... X> class TemplatableStringValue : public TemplatableValue<s
 
 template<typename... Ts> class TemplatableKeyValuePair {
  public:
+  // Keys are always string literals from YAML dictionary keys (e.g., "code", "event")
+  // and never templatable values or lambdas. Only the value parameter can be a lambda/template.
+  // Using pass-by-value with std::move allows optimal performance for both lvalues and rvalues.
   template<typename T> TemplatableKeyValuePair(std::string key, T value) : key(std::move(key)), value(value) {}
   std::string key;
   TemplatableStringValue<Ts...> value;
@@ -47,37 +50,39 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
 
   template<typename T> void set_service(T service) { this->service_ = service; }
 
-  template<typename T> void add_data(std::string key, T value) {
-    this->data_.push_back(TemplatableKeyValuePair<Ts...>(key, value));
-  }
+  // Keys are always string literals from the Python code generation (e.g., cg.add(var.add_data("tag_id", templ))).
+  // The value parameter can be a lambda/template, but keys are never templatable.
+  // Using pass-by-value allows the compiler to optimize for both lvalues and rvalues.
+  template<typename T> void add_data(std::string key, T value) { this->data_.emplace_back(std::move(key), value); }
   template<typename T> void add_data_template(std::string key, T value) {
-    this->data_template_.push_back(TemplatableKeyValuePair<Ts...>(key, value));
+    this->data_template_.emplace_back(std::move(key), value);
   }
   template<typename T> void add_variable(std::string key, T value) {
-    this->variables_.push_back(TemplatableKeyValuePair<Ts...>(key, value));
+    this->variables_.emplace_back(std::move(key), value);
   }
 
   void play(Ts... x) override {
     HomeassistantServiceResponse resp;
-    resp.service = this->service_.value(x...);
+    std::string service_value = this->service_.value(x...);
+    resp.set_service(StringRef(service_value));
     resp.is_event = this->is_event_;
     for (auto &it : this->data_) {
-      HomeassistantServiceMap kv;
-      kv.key = it.key;
+      resp.data.emplace_back();
+      auto &kv = resp.data.back();
+      kv.set_key(StringRef(it.key));
       kv.value = it.value.value(x...);
-      resp.data.push_back(kv);
     }
     for (auto &it : this->data_template_) {
-      HomeassistantServiceMap kv;
-      kv.key = it.key;
+      resp.data_template.emplace_back();
+      auto &kv = resp.data_template.back();
+      kv.set_key(StringRef(it.key));
       kv.value = it.value.value(x...);
-      resp.data_template.push_back(kv);
     }
     for (auto &it : this->variables_) {
-      HomeassistantServiceMap kv;
-      kv.key = it.key;
+      resp.variables.emplace_back();
+      auto &kv = resp.variables.back();
+      kv.set_key(StringRef(it.key));
       kv.value = it.value.value(x...);
-      resp.variables.push_back(kv);
     }
     this->parent_->send_homeassistant_service_call(resp);
   }
@@ -91,6 +96,6 @@ template<typename... Ts> class HomeAssistantServiceCallAction : public Action<Ts
   std::vector<TemplatableKeyValuePair<Ts...>> variables_;
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
+#endif
 #endif

esphome/components/api/list_entities.cpp

@@ -6,8 +6,7 @@
 #include "esphome/core/log.h"
 #include "esphome/core/util.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 // Generate entity handler implementations using macros
 #ifdef USE_BINARY_SENSOR
@@ -90,6 +89,5 @@ bool ListEntitiesIterator::on_service(UserServiceDescriptor *service) {
 }
 #endif
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/list_entities.h

@@ -4,8 +4,7 @@
 #ifdef USE_API
 #include "esphome/core/component.h"
 #include "esphome/core/component_iterator.h"
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 class APIConnection;
 
@@ -96,6 +95,5 @@ class ListEntitiesIterator : public ComponentIterator {
   APIConnection *client_;
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/proto.cpp

@@ -3,8 +3,7 @@
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 static const char *const TAG = "api.proto";
 
@@ -89,5 +88,4 @@ std::string ProtoMessage::dump() const {
 }
 #endif
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api

esphome/components/api/proto.h

@@ -3,16 +3,47 @@
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
+#include "esphome/core/string_ref.h"
 
 #include <cassert>
+#include <cstring>
 #include <vector>
 
 #ifdef ESPHOME_LOG_HAS_VERY_VERBOSE
 #define HAS_PROTO_MESSAGE_DUMP
 #endif
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
+
+/*
+ * StringRef Ownership Model for API Protocol Messages
+ * ===================================================
+ *
+ * StringRef is used for zero-copy string handling in outgoing (SOURCE_SERVER) messages.
+ * It holds a pointer and length to existing string data without copying.
+ *
+ * CRITICAL: The referenced string data MUST remain valid until message encoding completes.
+ *
+ * Safe StringRef Patterns:
+ * 1. String literals: StringRef("literal") - Always safe (static storage duration)
+ * 2. Member variables: StringRef(this->member_string_) - Safe if object outlives encoding
+ * 3. Global/static strings: StringRef(GLOBAL_CONSTANT) - Always safe
+ * 4. Local variables: Safe ONLY if encoding happens before function returns:
+ *    std::string temp = compute_value();
+ *    msg.set_field(StringRef(temp));
+ *    return this->send_message(msg);  // temp is valid during encoding
+ *
+ * Unsafe Patterns (WILL cause crashes/corruption):
+ * 1. Temporaries: msg.set_field(StringRef(obj.get_string())) // get_string() returns by value
+ * 2. Concatenation: msg.set_field(StringRef(str1 + str2)) // Result is temporary
+ *
+ * For unsafe patterns, store in a local variable first:
+ *    std::string temp = get_string();  // or str1 + str2
+ *    msg.set_field(StringRef(temp));
+ *
+ * The send_*_response pattern ensures proper lifetime management by encoding
+ * within the same function scope where temporaries are created.
+ */
 
 /// Representation of a VarInt - in ProtoBuf should be 64bit but we only use 32bit
 class ProtoVarInt {
@@ -206,12 +237,20 @@ class ProtoWriteBuffer {
 
     this->encode_field_raw(field_id, 2);  // type 2: Length-delimited string
     this->encode_varint_raw(len);
-    auto *data = reinterpret_cast<const uint8_t *>(string);
-    this->buffer_->insert(this->buffer_->end(), data, data + len);
+
+    // Using resize + memcpy instead of insert provides significant performance improvement:
+    // ~10-11x faster for 16-32 byte strings, ~3x faster for 64-byte strings
+    // as it avoids iterator checks and potential element moves that insert performs
+    size_t old_size = this->buffer_->size();
+    this->buffer_->resize(old_size + len);
+    std::memcpy(this->buffer_->data() + old_size, string, len);
   }
   void encode_string(uint32_t field_id, const std::string &value, bool force = false) {
     this->encode_string(field_id, value.data(), value.size(), force);
   }
+  void encode_string(uint32_t field_id, const StringRef &ref, bool force = false) {
+    this->encode_string(field_id, ref.c_str(), ref.size(), force);
+  }
   void encode_bytes(uint32_t field_id, const uint8_t *data, size_t len, bool force = false) {
     this->encode_string(field_id, reinterpret_cast<const char *>(data), len, force);
   }
@@ -294,13 +333,16 @@ class ProtoWriteBuffer {
   std::vector<uint8_t> *buffer_;
 };
 
+// Forward declaration
+class ProtoSize;
+
 class ProtoMessage {
  public:
   virtual ~ProtoMessage() = default;
   // Default implementation for messages with no fields
   virtual void encode(ProtoWriteBuffer buffer) const {}
   // Default implementation for messages with no fields
-  virtual void calculate_size(uint32_t &total_size) const {}
+  virtual void calculate_size(ProtoSize &size) const {}
 #ifdef HAS_PROTO_MESSAGE_DUMP
   std::string dump() const;
   virtual void dump_to(std::string &out) const = 0;
@@ -321,24 +363,32 @@ class ProtoDecodableMessage : public ProtoMessage {
 };
 
 class ProtoSize {
+ private:
+  uint32_t total_size_ = 0;
+
  public:
   /**
    * @brief ProtoSize class for Protocol Buffer serialization size calculation
    *
-   * This class provides static methods to calculate the exact byte counts needed
-   * for encoding various Protocol Buffer field types. All methods are designed to be
-   * efficient for the common case where many fields have default values.
+   * This class provides methods to calculate the exact byte counts needed
+   * for encoding various Protocol Buffer field types. The class now uses an
+   * object-based approach to reduce parameter passing overhead while keeping
+   * varint calculation methods static for external use.
    *
    * Implements Protocol Buffer encoding size calculation according to:
    * https://protobuf.dev/programming-guides/encoding/
    *
    * Key features:
+   * - Object-based approach reduces flash usage by eliminating parameter passing
    * - Early-return optimization for zero/default values
-   * - Direct total_size updates to avoid unnecessary additions
+   * - Static varint methods for external callers
    * - Specialized handling for different field types according to protobuf spec
-   * - Templated helpers for repeated fields and messages
    */
 
+  ProtoSize() = default;
+
+  uint32_t get_size() const { return total_size_; }
+
   /**
    * @brief Calculates the size in bytes needed to encode a uint32_t value as a varint
    *
@@ -439,9 +489,7 @@ class ProtoSize {
    * @brief Common parameters for all add_*_field methods
    *
    * All add_*_field methods follow these common patterns:
-   *
-   * @param total_size Reference to the total message size to update
-   * @param field_id_size Pre-calculated size of the field ID in bytes
+   *   * @param field_id_size Pre-calculated size of the field ID in bytes
    * @param value The value to calculate size for (type varies)
    * @param force Whether to calculate size even if the value is default/zero/empty
    *
@@ -454,104 +502,63 @@ class ProtoSize {
   /**
    * @brief Calculates and adds the size of an int32 field to the total message size
    */
-  static inline void add_int32_field(uint32_t &total_size, uint32_t field_id_size, int32_t value) {
-    // Skip calculation if value is zero
-    if (value == 0) {
-      return;  // No need to update total_size
-    }
-
-    // Calculate and directly add to total_size
-    if (value < 0) {
-      // Negative values are encoded as 10-byte varints in protobuf
-      total_size += field_id_size + 10;
-    } else {
-      // For non-negative values, use the standard varint size
-      total_size += field_id_size + varint(static_cast<uint32_t>(value));
+  inline void add_int32(uint32_t field_id_size, int32_t value) {
+    if (value != 0) {
+      add_int32_force(field_id_size, value);
     }
   }
 
   /**
-   * @brief Calculates and adds the size of an int32 field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of an int32 field to the total message size (force version)
    */
-  static inline void add_int32_field_repeated(uint32_t &total_size, uint32_t field_id_size, int32_t value) {
-    // Always calculate size for repeated fields
-    if (value < 0) {
-      // Negative values are encoded as 10-byte varints in protobuf
-      total_size += field_id_size + 10;
-    } else {
-      // For non-negative values, use the standard varint size
-      total_size += field_id_size + varint(static_cast<uint32_t>(value));
-    }
+  inline void add_int32_force(uint32_t field_id_size, int32_t value) {
+    // Always calculate size when forced
+    // Negative values are encoded as 10-byte varints in protobuf
+    total_size_ += field_id_size + (value < 0 ? 10 : varint(static_cast<uint32_t>(value)));
   }
 
   /**
    * @brief Calculates and adds the size of a uint32 field to the total message size
    */
-  static inline void add_uint32_field(uint32_t &total_size, uint32_t field_id_size, uint32_t value) {
-    // Skip calculation if value is zero
-    if (value == 0) {
-      return;  // No need to update total_size
+  inline void add_uint32(uint32_t field_id_size, uint32_t value) {
+    if (value != 0) {
+      add_uint32_force(field_id_size, value);
     }
-
-    // Calculate and directly add to total_size
-    total_size += field_id_size + varint(value);
   }
 
   /**
-   * @brief Calculates and adds the size of a uint32 field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a uint32 field to the total message size (force version)
    */
-  static inline void add_uint32_field_repeated(uint32_t &total_size, uint32_t field_id_size, uint32_t value) {
-    // Always calculate size for repeated fields
-    total_size += field_id_size + varint(value);
+  inline void add_uint32_force(uint32_t field_id_size, uint32_t value) {
+    // Always calculate size when force is true
+    total_size_ += field_id_size + varint(value);
   }
 
   /**
    * @brief Calculates and adds the size of a boolean field to the total message size
    */
-  static inline void add_bool_field(uint32_t &total_size, uint32_t field_id_size, bool value) {
-    // Skip calculation if value is false
-    if (!value) {
-      return;  // No need to update total_size
+  inline void add_bool(uint32_t field_id_size, bool value) {
+    if (value) {
+      // Boolean fields always use 1 byte when true
+      total_size_ += field_id_size + 1;
     }
-
-    // Boolean fields always use 1 byte when true
-    total_size += field_id_size + 1;
   }
 
   /**
-   * @brief Calculates and adds the size of a boolean field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a boolean field to the total message size (force version)
    */
-  static inline void add_bool_field_repeated(uint32_t &total_size, uint32_t field_id_size, bool value) {
-    // Always calculate size for repeated fields
+  inline void add_bool_force(uint32_t field_id_size, bool value) {
+    // Always calculate size when force is true
     // Boolean fields always use 1 byte
-    total_size += field_id_size + 1;
-  }
-
-  /**
-   * @brief Calculates and adds the size of a fixed field to the total message size
-   *
-   * Fixed fields always take exactly N bytes (4 for fixed32/float, 8 for fixed64/double).
-   *
-   * @tparam NumBytes The number of bytes for this fixed field (4 or 8)
-   * @param is_nonzero Whether the value is non-zero
-   */
-  template<uint32_t NumBytes>
-  static inline void add_fixed_field(uint32_t &total_size, uint32_t field_id_size, bool is_nonzero) {
-    // Skip calculation if value is zero
-    if (!is_nonzero) {
-      return;  // No need to update total_size
-    }
-
-    // Fixed fields always take exactly NumBytes
-    total_size += field_id_size + NumBytes;
+    total_size_ += field_id_size + 1;
   }
 
   /**
    * @brief Calculates and adds the size of a float field to the total message size
    */
-  static inline void add_float_field(uint32_t &total_size, uint32_t field_id_size, float value) {
+  inline void add_float(uint32_t field_id_size, float value) {
     if (value != 0.0f) {
-      total_size += field_id_size + 4;
+      total_size_ += field_id_size + 4;
     }
   }
 
@@ -561,9 +568,9 @@ class ProtoSize {
   /**
    * @brief Calculates and adds the size of a fixed32 field to the total message size
    */
-  static inline void add_fixed32_field(uint32_t &total_size, uint32_t field_id_size, uint32_t value) {
+  inline void add_fixed32(uint32_t field_id_size, uint32_t value) {
     if (value != 0) {
-      total_size += field_id_size + 4;
+      total_size_ += field_id_size + 4;
     }
   }
 
@@ -573,137 +580,104 @@ class ProtoSize {
   /**
    * @brief Calculates and adds the size of a sfixed32 field to the total message size
    */
-  static inline void add_sfixed32_field(uint32_t &total_size, uint32_t field_id_size, int32_t value) {
+  inline void add_sfixed32(uint32_t field_id_size, int32_t value) {
     if (value != 0) {
-      total_size += field_id_size + 4;
+      total_size_ += field_id_size + 4;
     }
   }
 
   // NOTE: add_sfixed64_field removed - wire type 1 (64-bit: sfixed64) not supported
   // to reduce overhead on embedded systems
 
-  /**
-   * @brief Calculates and adds the size of an enum field to the total message size
-   *
-   * Enum fields are encoded as uint32 varints.
-   */
-  static inline void add_enum_field(uint32_t &total_size, uint32_t field_id_size, uint32_t value) {
-    // Skip calculation if value is zero
-    if (value == 0) {
-      return;  // No need to update total_size
-    }
-
-    // Enums are encoded as uint32
-    total_size += field_id_size + varint(value);
-  }
-
-  /**
-   * @brief Calculates and adds the size of an enum field to the total message size (repeated field version)
-   *
-   * Enum fields are encoded as uint32 varints.
-   */
-  static inline void add_enum_field_repeated(uint32_t &total_size, uint32_t field_id_size, uint32_t value) {
-    // Always calculate size for repeated fields
-    // Enums are encoded as uint32
-    total_size += field_id_size + varint(value);
-  }
-
   /**
    * @brief Calculates and adds the size of a sint32 field to the total message size
    *
    * Sint32 fields use ZigZag encoding, which is more efficient for negative values.
    */
-  static inline void add_sint32_field(uint32_t &total_size, uint32_t field_id_size, int32_t value) {
-    // Skip calculation if value is zero
-    if (value == 0) {
-      return;  // No need to update total_size
+  inline void add_sint32(uint32_t field_id_size, int32_t value) {
+    if (value != 0) {
+      add_sint32_force(field_id_size, value);
     }
-
-    // ZigZag encoding for sint32: (n << 1) ^ (n >> 31)
-    uint32_t zigzag = (static_cast<uint32_t>(value) << 1) ^ (static_cast<uint32_t>(value >> 31));
-    total_size += field_id_size + varint(zigzag);
   }
 
   /**
-   * @brief Calculates and adds the size of a sint32 field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a sint32 field to the total message size (force version)
    *
    * Sint32 fields use ZigZag encoding, which is more efficient for negative values.
    */
-  static inline void add_sint32_field_repeated(uint32_t &total_size, uint32_t field_id_size, int32_t value) {
-    // Always calculate size for repeated fields
+  inline void add_sint32_force(uint32_t field_id_size, int32_t value) {
+    // Always calculate size when force is true
     // ZigZag encoding for sint32: (n << 1) ^ (n >> 31)
     uint32_t zigzag = (static_cast<uint32_t>(value) << 1) ^ (static_cast<uint32_t>(value >> 31));
-    total_size += field_id_size + varint(zigzag);
+    total_size_ += field_id_size + varint(zigzag);
   }
 
   /**
    * @brief Calculates and adds the size of an int64 field to the total message size
    */
-  static inline void add_int64_field(uint32_t &total_size, uint32_t field_id_size, int64_t value) {
-    // Skip calculation if value is zero
-    if (value == 0) {
-      return;  // No need to update total_size
+  inline void add_int64(uint32_t field_id_size, int64_t value) {
+    if (value != 0) {
+      add_int64_force(field_id_size, value);
     }
-
-    // Calculate and directly add to total_size
-    total_size += field_id_size + varint(value);
   }
 
   /**
-   * @brief Calculates and adds the size of an int64 field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of an int64 field to the total message size (force version)
    */
-  static inline void add_int64_field_repeated(uint32_t &total_size, uint32_t field_id_size, int64_t value) {
-    // Always calculate size for repeated fields
-    total_size += field_id_size + varint(value);
+  inline void add_int64_force(uint32_t field_id_size, int64_t value) {
+    // Always calculate size when force is true
+    total_size_ += field_id_size + varint(value);
   }
 
   /**
    * @brief Calculates and adds the size of a uint64 field to the total message size
    */
-  static inline void add_uint64_field(uint32_t &total_size, uint32_t field_id_size, uint64_t value) {
-    // Skip calculation if value is zero
-    if (value == 0) {
-      return;  // No need to update total_size
+  inline void add_uint64(uint32_t field_id_size, uint64_t value) {
+    if (value != 0) {
+      add_uint64_force(field_id_size, value);
     }
-
-    // Calculate and directly add to total_size
-    total_size += field_id_size + varint(value);
   }
 
   /**
-   * @brief Calculates and adds the size of a uint64 field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a uint64 field to the total message size (force version)
    */
-  static inline void add_uint64_field_repeated(uint32_t &total_size, uint32_t field_id_size, uint64_t value) {
-    // Always calculate size for repeated fields
-    total_size += field_id_size + varint(value);
+  inline void add_uint64_force(uint32_t field_id_size, uint64_t value) {
+    // Always calculate size when force is true
+    total_size_ += field_id_size + varint(value);
   }
 
-  // NOTE: sint64 support functions (add_sint64_field, add_sint64_field_repeated) removed
+  // NOTE: sint64 support functions (add_sint64_field, add_sint64_field_force) removed
   // sint64 type is not supported by ESPHome API to reduce overhead on embedded systems
 
   /**
-   * @brief Calculates and adds the size of a string/bytes field to the total message size
+   * @brief Calculates and adds the size of a length-delimited field (string/bytes) to the total message size
    */
-  static inline void add_string_field(uint32_t &total_size, uint32_t field_id_size, const std::string &str) {
-    // Skip calculation if string is empty
-    if (str.empty()) {
-      return;  // No need to update total_size
+  inline void add_length(uint32_t field_id_size, size_t len) {
+    if (len != 0) {
+      add_length_force(field_id_size, len);
     }
-
-    // Calculate and directly add to total_size
-    const uint32_t str_size = static_cast<uint32_t>(str.size());
-    total_size += field_id_size + varint(str_size) + str_size;
   }
 
   /**
-   * @brief Calculates and adds the size of a string/bytes field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a length-delimited field (string/bytes) to the total message size (repeated
+   * field version)
    */
-  static inline void add_string_field_repeated(uint32_t &total_size, uint32_t field_id_size, const std::string &str) {
-    // Always calculate size for repeated fields
-    const uint32_t str_size = static_cast<uint32_t>(str.size());
-    total_size += field_id_size + varint(str_size) + str_size;
+  inline void add_length_force(uint32_t field_id_size, size_t len) {
+    // Always calculate size when force is true
+    // Field ID + length varint + data bytes
+    total_size_ += field_id_size + varint(static_cast<uint32_t>(len)) + static_cast<uint32_t>(len);
   }
 
+  /**
+   * @brief Adds a pre-calculated size directly to the total
+   *
+   * This is used when we can calculate the total size by multiplying the number
+   * of elements by the bytes per element (for repeated fixed-size types like float, fixed32, etc.)
+   *
+   * @param size The pre-calculated total size to add
+   */
+  inline void add_precalculated_size(uint32_t size) { total_size_ += size; }
+
   /**
    * @brief Calculates and adds the size of a nested message field to the total message size
    *
@@ -712,26 +686,21 @@ class ProtoSize {
    *
    * @param nested_size The pre-calculated size of the nested message
    */
-  static inline void add_message_field(uint32_t &total_size, uint32_t field_id_size, uint32_t nested_size) {
-    // Skip calculation if nested message is empty
-    if (nested_size == 0) {
-      return;  // No need to update total_size
+  inline void add_message_field(uint32_t field_id_size, uint32_t nested_size) {
+    if (nested_size != 0) {
+      add_message_field_force(field_id_size, nested_size);
     }
-
-    // Calculate and directly add to total_size
-    // Field ID + length varint + nested message content
-    total_size += field_id_size + varint(nested_size) + nested_size;
   }
 
   /**
-   * @brief Calculates and adds the size of a nested message field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a nested message field to the total message size (force version)
    *
    * @param nested_size The pre-calculated size of the nested message
    */
-  static inline void add_message_field_repeated(uint32_t &total_size, uint32_t field_id_size, uint32_t nested_size) {
-    // Always calculate size for repeated fields
+  inline void add_message_field_force(uint32_t field_id_size, uint32_t nested_size) {
+    // Always calculate size when force is true
     // Field ID + length varint + nested message content
-    total_size += field_id_size + varint(nested_size) + nested_size;
+    total_size_ += field_id_size + varint(nested_size) + nested_size;
   }
 
   /**
@@ -743,26 +712,29 @@ class ProtoSize {
    *
    * @param message The nested message object
    */
-  static inline void add_message_object(uint32_t &total_size, uint32_t field_id_size, const ProtoMessage &message) {
-    uint32_t nested_size = 0;
-    message.calculate_size(nested_size);
+  inline void add_message_object(uint32_t field_id_size, const ProtoMessage &message) {
+    // Calculate nested message size by creating a temporary ProtoSize
+    ProtoSize nested_calc;
+    message.calculate_size(nested_calc);
+    uint32_t nested_size = nested_calc.get_size();
 
     // Use the base implementation with the calculated nested_size
-    add_message_field(total_size, field_id_size, nested_size);
+    add_message_field(field_id_size, nested_size);
   }
 
   /**
-   * @brief Calculates and adds the size of a nested message field to the total message size (repeated field version)
+   * @brief Calculates and adds the size of a nested message field to the total message size (force version)
    *
    * @param message The nested message object
    */
-  static inline void add_message_object_repeated(uint32_t &total_size, uint32_t field_id_size,
-                                                 const ProtoMessage &message) {
-    uint32_t nested_size = 0;
-    message.calculate_size(nested_size);
+  inline void add_message_object_force(uint32_t field_id_size, const ProtoMessage &message) {
+    // Calculate nested message size by creating a temporary ProtoSize
+    ProtoSize nested_calc;
+    message.calculate_size(nested_calc);
+    uint32_t nested_size = nested_calc.get_size();
 
     // Use the base implementation with the calculated nested_size
-    add_message_field_repeated(total_size, field_id_size, nested_size);
+    add_message_field_force(field_id_size, nested_size);
   }
 
   /**
@@ -775,16 +747,15 @@ class ProtoSize {
    * @param messages Vector of message objects
    */
   template<typename MessageType>
-  static inline void add_repeated_message(uint32_t &total_size, uint32_t field_id_size,
-                                          const std::vector<MessageType> &messages) {
+  inline void add_repeated_message(uint32_t field_id_size, const std::vector<MessageType> &messages) {
     // Skip if the vector is empty
     if (messages.empty()) {
       return;
     }
 
-    // Use the repeated field version for all messages
+    // Use the force version for all messages in the repeated field
     for (const auto &message : messages) {
-      add_message_object_repeated(total_size, field_id_size, message);
+      add_message_object_force(field_id_size, message);
     }
   }
 };
@@ -794,8 +765,9 @@ inline void ProtoWriteBuffer::encode_message(uint32_t field_id, const ProtoMessa
   this->encode_field_raw(field_id, 2);  // type 2: Length-delimited message
 
   // Calculate the message size first
-  uint32_t msg_length_bytes = 0;
-  value.calculate_size(msg_length_bytes);
+  ProtoSize msg_size;
+  value.calculate_size(msg_size);
+  uint32_t msg_length_bytes = msg_size.get_size();
 
   // Calculate how many bytes the length varint needs
   uint32_t varint_length_bytes = ProtoSize::varint(msg_length_bytes);
@@ -827,7 +799,9 @@ class ProtoService {
   virtual bool is_authenticated() = 0;
   virtual bool is_connection_setup() = 0;
   virtual void on_fatal_error() = 0;
+#ifdef USE_API_PASSWORD
   virtual void on_unauthenticated_access() = 0;
+#endif
   virtual void on_no_setup_connection() = 0;
   /**
    * Create a buffer with a reserved size.
@@ -842,8 +816,9 @@ class ProtoService {
 
   // Optimized method that pre-allocates buffer based on message size
   bool send_message_(const ProtoMessage &msg, uint8_t message_type) {
-    uint32_t msg_size = 0;
-    msg.calculate_size(msg_size);
+    ProtoSize size;
+    msg.calculate_size(size);
+    uint32_t msg_size = size.get_size();
 
     // Create a pre-sized buffer
     auto buffer = this->create_buffer(msg_size);
@@ -865,6 +840,7 @@ class ProtoService {
   }
 
   bool check_authenticated_() {
+#ifdef USE_API_PASSWORD
     if (!this->check_connection_setup_()) {
       return false;
     }
@@ -873,8 +849,10 @@ class ProtoService {
       return false;
     }
     return true;
+#else
+    return this->check_connection_setup_();
+#endif
   }
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api

esphome/components/api/subscribe_state.cpp

@@ -3,8 +3,7 @@
 #include "api_connection.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 // Generate entity handler implementations using macros
 #ifdef USE_BINARY_SENSOR
@@ -69,6 +68,5 @@ INITIAL_STATE_HANDLER(update, update::UpdateEntity)
 
 InitialStateIterator::InitialStateIterator(APIConnection *client) : client_(client) {}
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/subscribe_state.h

@@ -5,8 +5,7 @@
 #include "esphome/core/component.h"
 #include "esphome/core/component_iterator.h"
 #include "esphome/core/controller.h"
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 class APIConnection;
 
@@ -89,6 +88,5 @@ class InitialStateIterator : public ComponentIterator {
   APIConnection *client_;
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif

esphome/components/api/user_services.cpp

@@ -1,8 +1,7 @@
 #include "user_services.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 template<> bool get_execute_arg_value<bool>(const ExecuteServiceArgument &arg) { return arg.bool_; }
 template<> int32_t get_execute_arg_value<int32_t>(const ExecuteServiceArgument &arg) {
@@ -40,5 +39,4 @@ template<> enums::ServiceArgType to_service_arg_type<std::vector<std::string>>()
   return enums::SERVICE_ARG_TYPE_STRING_ARRAY;
 }
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api

esphome/components/api/user_services.h

@@ -8,8 +8,7 @@
 #include "api_pb2.h"
 
 #ifdef USE_API_SERVICES
-namespace esphome {
-namespace api {
+namespace esphome::api {
 
 class UserServiceDescriptor {
  public:
@@ -33,14 +32,14 @@ template<typename... Ts> class UserServiceBase : public UserServiceDescriptor {
 
   ListEntitiesServicesResponse encode_list_service_response() override {
     ListEntitiesServicesResponse msg;
-    msg.name = this->name_;
+    msg.set_name(StringRef(this->name_));
     msg.key = this->key_;
     std::array<enums::ServiceArgType, sizeof...(Ts)> arg_types = {to_service_arg_type<Ts>()...};
     for (int i = 0; i < sizeof...(Ts); i++) {
-      ListEntitiesServicesArgument arg;
+      msg.args.emplace_back();
+      auto &arg = msg.args.back();
       arg.type = arg_types[i];
-      arg.name = this->arg_names_[i];
-      msg.args.push_back(arg);
+      arg.set_name(StringRef(this->arg_names_[i]));
     }
     return msg;
   }
@@ -74,6 +73,5 @@ template<typename... Ts> class UserServiceTrigger : public UserServiceBase<Ts...
   void execute(Ts... x) override { this->trigger(x...); }  // NOLINT
 };
 
-}  // namespace api
-}  // namespace esphome
+}  // namespace esphome::api
 #endif  // USE_API_SERVICES

esphome/components/as3935/as3935.cpp

@@ -7,8 +7,6 @@ namespace as3935 {
 static const char *const TAG = "as3935";
 
 void AS3935Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   this->irq_pin_->setup();
   LOG_PIN("  IRQ Pin: ", this->irq_pin_);
 

esphome/components/as3935_spi/as3935_spi.cpp

@@ -7,9 +7,7 @@ namespace as3935_spi {
 static const char *const TAG = "as3935_spi";
 
 void SPIAS3935Component::setup() {
-  ESP_LOGI(TAG, "SPIAS3935Component setup started!");
   this->spi_setup();
-  ESP_LOGI(TAG, "SPI setup finished!");
   AS3935Component::setup();
 }
 

esphome/components/as5600/as5600.cpp

@@ -23,8 +23,6 @@ static const uint8_t REGISTER_AGC = 0x1A;        // 8 bytes  / R
 static const uint8_t REGISTER_MAGNITUDE = 0x1B;  // 16 bytes / R
 
 void AS5600Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   if (!this->read_byte(REGISTER_STATUS).has_value()) {
     this->mark_failed();
     return;

esphome/components/as7341/as7341.cpp

@@ -8,7 +8,6 @@ namespace as7341 {
 static const char *const TAG = "as7341";
 
 void AS7341Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   LOG_I2C_DEVICE(this);
 
   // Verify device ID

esphome/components/at581x/at581x.cpp

@@ -71,7 +71,7 @@ bool AT581XComponent::i2c_read_reg(uint8_t addr, uint8_t &data) {
   return this->read_register(addr, &data, 1) == esphome::i2c::NO_ERROR;
 }
 
-void AT581XComponent::setup() { ESP_LOGCONFIG(TAG, "Running setup"); }
+void AT581XComponent::setup() {}
 void AT581XComponent::dump_config() { LOG_I2C_DEVICE(this); }
 #define ARRAY_SIZE(X) (sizeof(X) / sizeof((X)[0]))
 bool AT581XComponent::i2c_write_config() {

esphome/components/atm90e26/atm90e26.cpp

@@ -41,7 +41,6 @@ void ATM90E26Component::update() {
 }
 
 void ATM90E26Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   this->spi_setup();
 
   uint16_t mmode = 0x422;  // default values for everything but L/N line current gains

esphome/components/atm90e32/atm90e32.cpp

@@ -109,7 +109,6 @@ void ATM90E32Component::update() {
 }
 
 void ATM90E32Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   this->spi_setup();
 
   uint16_t mmode0 = 0x87;  // 3P4W 50Hz

esphome/components/audio/audio.h

@@ -15,7 +15,7 @@ class AudioStreamInfo {
    *  - An audio sample represents a unit of audio for one channel.
    *  - A frame represents a unit of audio with a sample for every channel.
    *
-   * In gneneral, converting between bytes, samples, and frames shouldn't result in rounding errors so long as frames
+   * In general, converting between bytes, samples, and frames shouldn't result in rounding errors so long as frames
    * are used as the main unit when transferring audio data. Durations may result in rounding for certain sample rates;
    * e.g., 44.1 KHz. The ``frames_to_milliseconds_with_remainder`` function should be used for accuracy, as it takes
    * into account the remainder rather than just ignoring any rounding.
@@ -76,7 +76,7 @@ class AudioStreamInfo {
 
   /// @brief Computes the duration, in microseconds, the given amount of frames represents.
   /// @param frames Number of audio frames
-  /// @return Duration in microseconds `frames` respresents. May be slightly inaccurate due to integer divison rounding
+  /// @return Duration in microseconds `frames` represents. May be slightly inaccurate due to integer division rounding
   ///         for certain sample rates.
   uint32_t frames_to_microseconds(uint32_t frames) const;
 

esphome/components/axs15231/touchscreen/axs15231_touchscreen.cpp

@@ -17,7 +17,6 @@ constexpr static const uint8_t AXS_READ_TOUCHPAD[11] = {0xb5, 0xab, 0xa5, 0x5a,
   }
 
 void AXS15231Touchscreen::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (this->reset_pin_ != nullptr) {
     this->reset_pin_->setup();
     this->reset_pin_->digital_write(false);
@@ -36,7 +35,6 @@ void AXS15231Touchscreen::setup() {
   if (this->y_raw_max_ == 0) {
     this->y_raw_max_ = this->display_->get_native_height();
   }
-  ESP_LOGCONFIG(TAG, "AXS15231 Touchscreen setup complete");
 }
 
 void AXS15231Touchscreen::update_touches() {

esphome/components/beken_spi_led_strip/led_strip.cpp

@@ -121,8 +121,6 @@ void spi_dma_tx_finish_callback(unsigned int param) {
 }
 
 void BekenSPILEDStripLightOutput::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   size_t buffer_size = this->get_buffer_size_();
   size_t dma_buffer_size = (buffer_size * 8) + (2 * 64);
 

esphome/components/bh1750/bh1750.cpp

@@ -38,7 +38,6 @@ MTreg:
 */
 
 void BH1750Sensor::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->name_.c_str());
   uint8_t turn_on = BH1750_COMMAND_POWER_ON;
   if (this->write(&turn_on, 1) != i2c::ERROR_OK) {
     this->mark_failed();

esphome/components/binary_sensor/__init__.py

@@ -266,8 +266,10 @@ async def delayed_off_filter_to_code(config, filter_id):
 async def autorepeat_filter_to_code(config, filter_id):
     timings = []
     if len(config) > 0:
-        for conf in config:
-            timings.append((conf[CONF_DELAY], conf[CONF_TIME_OFF], conf[CONF_TIME_ON]))
+        timings.extend(
+            (conf[CONF_DELAY], conf[CONF_TIME_OFF], conf[CONF_TIME_ON])
+            for conf in config
+        )
     else:
         timings.append(
             (
@@ -514,6 +516,7 @@ def binary_sensor_schema(
     icon: str = cv.UNDEFINED,
     entity_category: str = cv.UNDEFINED,
     device_class: str = cv.UNDEFINED,
+    filters: list = cv.UNDEFINED,
 ) -> cv.Schema:
     schema = {}
 
@@ -525,6 +528,7 @@ def binary_sensor_schema(
         (CONF_ICON, icon, cv.icon),
         (CONF_ENTITY_CATEGORY, entity_category, cv.entity_category),
         (CONF_DEVICE_CLASS, device_class, validate_device_class),
+        (CONF_FILTERS, filters, validate_filters),
     ]:
         if default is not cv.UNDEFINED:
             schema[cv.Optional(key, default=default)] = validator
@@ -573,16 +577,15 @@ async def setup_binary_sensor_core_(var, config):
         await automation.build_automation(trigger, [], conf)
 
     for conf in config.get(CONF_ON_MULTI_CLICK, []):
-        timings = []
-        for tim in conf[CONF_TIMING]:
-            timings.append(
-                cg.StructInitializer(
-                    MultiClickTriggerEvent,
-                    ("state", tim[CONF_STATE]),
-                    ("min_length", tim[CONF_MIN_LENGTH]),
-                    ("max_length", tim.get(CONF_MAX_LENGTH, 4294967294)),
-                )
+        timings = [
+            cg.StructInitializer(
+                MultiClickTriggerEvent,
+                ("state", tim[CONF_STATE]),
+                ("min_length", tim[CONF_MIN_LENGTH]),
+                ("max_length", tim.get(CONF_MAX_LENGTH, 4294967294)),
             )
+            for tim in conf[CONF_TIMING]
+        ]
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var, timings)
         if CONF_INVALID_COOLDOWN in conf:
             cg.add(trigger.set_invalid_cooldown(conf[CONF_INVALID_COOLDOWN]))

esphome/components/bluetooth_proxy/bluetooth_connection.cpp

@@ -8,16 +8,184 @@
 
 #include "bluetooth_proxy.h"
 
-namespace esphome {
-namespace bluetooth_proxy {
+namespace esphome::bluetooth_proxy {
 
 static const char *const TAG = "bluetooth_proxy.connection";
 
+static void fill_128bit_uuid_array(std::array<uint64_t, 2> &out, esp_bt_uuid_t uuid_source) {
+  esp_bt_uuid_t uuid = espbt::ESPBTUUID::from_uuid(uuid_source).as_128bit().get_uuid();
+  out[0] = ((uint64_t) uuid.uuid.uuid128[15] << 56) | ((uint64_t) uuid.uuid.uuid128[14] << 48) |
+           ((uint64_t) uuid.uuid.uuid128[13] << 40) | ((uint64_t) uuid.uuid.uuid128[12] << 32) |
+           ((uint64_t) uuid.uuid.uuid128[11] << 24) | ((uint64_t) uuid.uuid.uuid128[10] << 16) |
+           ((uint64_t) uuid.uuid.uuid128[9] << 8) | ((uint64_t) uuid.uuid.uuid128[8]);
+  out[1] = ((uint64_t) uuid.uuid.uuid128[7] << 56) | ((uint64_t) uuid.uuid.uuid128[6] << 48) |
+           ((uint64_t) uuid.uuid.uuid128[5] << 40) | ((uint64_t) uuid.uuid.uuid128[4] << 32) |
+           ((uint64_t) uuid.uuid.uuid128[3] << 24) | ((uint64_t) uuid.uuid.uuid128[2] << 16) |
+           ((uint64_t) uuid.uuid.uuid128[1] << 8) | ((uint64_t) uuid.uuid.uuid128[0]);
+}
+
 void BluetoothConnection::dump_config() {
   ESP_LOGCONFIG(TAG, "BLE Connection:");
   BLEClientBase::dump_config();
 }
 
+void BluetoothConnection::loop() {
+  BLEClientBase::loop();
+
+  // Early return if no active connection or not in service discovery phase
+  if (this->address_ == 0 || this->send_service_ < 0 || this->send_service_ > this->service_count_) {
+    return;
+  }
+
+  // Handle service discovery
+  this->send_service_for_discovery_();
+}
+
+void BluetoothConnection::reset_connection_(esp_err_t reason) {
+  // Send disconnection notification
+  this->proxy_->send_device_connection(this->address_, false, 0, reason);
+
+  // Important: If we were in the middle of sending services, we do NOT send
+  // send_gatt_services_done() here. This ensures the client knows that
+  // the service discovery was interrupted and can retry. The client
+  // (aioesphomeapi) implements a 30-second timeout (DEFAULT_BLE_TIMEOUT)
+  // to detect incomplete service discovery rather than relying on us to
+  // tell them about a partial list.
+  this->set_address(0);
+  this->send_service_ = DONE_SENDING_SERVICES;
+  this->proxy_->send_connections_free();
+}
+
+void BluetoothConnection::send_service_for_discovery_() {
+  if (this->send_service_ == this->service_count_) {
+    this->send_service_ = DONE_SENDING_SERVICES;
+    this->proxy_->send_gatt_services_done(this->address_);
+    if (this->connection_type_ == espbt::ConnectionType::V3_WITH_CACHE ||
+        this->connection_type_ == espbt::ConnectionType::V3_WITHOUT_CACHE) {
+      this->release_services();
+    }
+    return;
+  }
+
+  // Early return if no API connection
+  auto *api_conn = this->proxy_->get_api_connection();
+  if (api_conn == nullptr) {
+    return;
+  }
+
+  // Send next service
+  esp_gattc_service_elem_t service_result;
+  uint16_t service_count = 1;
+  esp_gatt_status_t service_status = esp_ble_gattc_get_service(this->gattc_if_, this->conn_id_, nullptr,
+                                                               &service_result, &service_count, this->send_service_);
+  this->send_service_++;
+
+  if (service_status != ESP_GATT_OK || service_count == 0) {
+    ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_service %s, status=%d, service_count=%d, offset=%d",
+             this->connection_index_, this->address_str().c_str(), service_status != ESP_GATT_OK ? "error" : "missing",
+             service_status, service_count, this->send_service_ - 1);
+    return;
+  }
+
+  api::BluetoothGATTGetServicesResponse resp;
+  resp.address = this->address_;
+  auto &service_resp = resp.services[0];
+  fill_128bit_uuid_array(service_resp.uuid, service_result.uuid);
+  service_resp.handle = service_result.start_handle;
+
+  // Get the number of characteristics directly with one call
+  uint16_t total_char_count = 0;
+  esp_gatt_status_t char_count_status =
+      esp_ble_gattc_get_attr_count(this->gattc_if_, this->conn_id_, ESP_GATT_DB_CHARACTERISTIC,
+                                   service_result.start_handle, service_result.end_handle, 0, &total_char_count);
+
+  if (char_count_status != ESP_GATT_OK) {
+    ESP_LOGW(TAG, "[%d] [%s] Error getting characteristic count, status=%d", this->connection_index_,
+             this->address_str().c_str(), char_count_status);
+    return;
+  }
+
+  if (total_char_count == 0) {
+    // No characteristics, just send the service response
+    api_conn->send_message(resp, api::BluetoothGATTGetServicesResponse::MESSAGE_TYPE);
+    return;
+  }
+
+  // Reserve space and process characteristics
+  service_resp.characteristics.reserve(total_char_count);
+  uint16_t char_offset = 0;
+  esp_gattc_char_elem_t char_result;
+  while (true) {  // characteristics
+    uint16_t char_count = 1;
+    esp_gatt_status_t char_status =
+        esp_ble_gattc_get_all_char(this->gattc_if_, this->conn_id_, service_result.start_handle,
+                                   service_result.end_handle, &char_result, &char_count, char_offset);
+    if (char_status == ESP_GATT_INVALID_OFFSET || char_status == ESP_GATT_NOT_FOUND) {
+      break;
+    }
+    if (char_status != ESP_GATT_OK) {
+      ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_all_char error, status=%d", this->connection_index_,
+               this->address_str().c_str(), char_status);
+      return;
+    }
+    if (char_count == 0) {
+      break;
+    }
+
+    service_resp.characteristics.emplace_back();
+    auto &characteristic_resp = service_resp.characteristics.back();
+    fill_128bit_uuid_array(characteristic_resp.uuid, char_result.uuid);
+    characteristic_resp.handle = char_result.char_handle;
+    characteristic_resp.properties = char_result.properties;
+    char_offset++;
+
+    // Get the number of descriptors directly with one call
+    uint16_t total_desc_count = 0;
+    esp_gatt_status_t desc_count_status = esp_ble_gattc_get_attr_count(
+        this->gattc_if_, this->conn_id_, ESP_GATT_DB_DESCRIPTOR, 0, 0, char_result.char_handle, &total_desc_count);
+
+    if (desc_count_status != ESP_GATT_OK) {
+      ESP_LOGW(TAG, "[%d] [%s] Error getting descriptor count for char handle %d, status=%d", this->connection_index_,
+               this->address_str().c_str(), char_result.char_handle, desc_count_status);
+      return;
+    }
+    if (total_desc_count == 0) {
+      // No descriptors, continue to next characteristic
+      continue;
+    }
+
+    // Reserve space and process descriptors
+    characteristic_resp.descriptors.reserve(total_desc_count);
+    uint16_t desc_offset = 0;
+    esp_gattc_descr_elem_t desc_result;
+    while (true) {  // descriptors
+      uint16_t desc_count = 1;
+      esp_gatt_status_t desc_status = esp_ble_gattc_get_all_descr(
+          this->gattc_if_, this->conn_id_, char_result.char_handle, &desc_result, &desc_count, desc_offset);
+      if (desc_status == ESP_GATT_INVALID_OFFSET || desc_status == ESP_GATT_NOT_FOUND) {
+        break;
+      }
+      if (desc_status != ESP_GATT_OK) {
+        ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_all_descr error, status=%d", this->connection_index_,
+                 this->address_str().c_str(), desc_status);
+        return;
+      }
+      if (desc_count == 0) {
+        break;  // No more descriptors
+      }
+
+      characteristic_resp.descriptors.emplace_back();
+      auto &descriptor_resp = characteristic_resp.descriptors.back();
+      fill_128bit_uuid_array(descriptor_resp.uuid, desc_result.uuid);
+      descriptor_resp.handle = desc_result.handle;
+      desc_offset++;
+    }
+  }
+
+  // Send the message (we already checked api_conn is not null at the beginning)
+  api_conn->send_message(resp, api::BluetoothGATTGetServicesResponse::MESSAGE_TYPE);
+}
+
 bool BluetoothConnection::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                                               esp_ble_gattc_cb_param_t *param) {
   if (!BLEClientBase::gattc_event_handler(event, gattc_if, param))
@@ -25,22 +193,16 @@ bool BluetoothConnection::gattc_event_handler(esp_gattc_cb_event_t event, esp_ga
 
   switch (event) {
     case ESP_GATTC_DISCONNECT_EVT: {
-      this->proxy_->send_device_connection(this->address_, false, 0, param->disconnect.reason);
-      this->set_address(0);
-      this->proxy_->send_connections_free();
+      this->reset_connection_(param->disconnect.reason);
       break;
     }
     case ESP_GATTC_CLOSE_EVT: {
-      this->proxy_->send_device_connection(this->address_, false, 0, param->close.reason);
-      this->set_address(0);
-      this->proxy_->send_connections_free();
+      this->reset_connection_(param->close.reason);
       break;
     }
     case ESP_GATTC_OPEN_EVT: {
       if (param->open.status != ESP_GATT_OK && param->open.status != ESP_GATT_ALREADY_OPEN) {
-        this->proxy_->send_device_connection(this->address_, false, 0, param->open.status);
-        this->set_address(0);
-        this->proxy_->send_connections_free();
+        this->reset_connection_(param->open.status);
       } else if (this->connection_type_ == espbt::ConnectionType::V3_WITH_CACHE) {
         this->proxy_->send_device_connection(this->address_, true, this->mtu_);
         this->proxy_->send_connections_free();
@@ -72,9 +234,7 @@ bool BluetoothConnection::gattc_event_handler(esp_gattc_cb_event_t event, esp_ga
       api::BluetoothGATTReadResponse resp;
       resp.address = this->address_;
       resp.handle = param->read.handle;
-      resp.data.reserve(param->read.value_len);
-      // Use bulk insert instead of individual push_backs
-      resp.data.insert(resp.data.end(), param->read.value, param->read.value + param->read.value_len);
+      resp.set_data(param->read.value, param->read.value_len);
       this->proxy_->get_api_connection()->send_message(resp, api::BluetoothGATTReadResponse::MESSAGE_TYPE);
       break;
     }
@@ -125,9 +285,7 @@ bool BluetoothConnection::gattc_event_handler(esp_gattc_cb_event_t event, esp_ga
       api::BluetoothGATTNotifyDataResponse resp;
       resp.address = this->address_;
       resp.handle = param->notify.handle;
-      resp.data.reserve(param->notify.value_len);
-      // Use bulk insert instead of individual push_backs
-      resp.data.insert(resp.data.end(), param->notify.value, param->notify.value + param->notify.value_len);
+      resp.set_data(param->notify.value, param->notify.value_len);
       this->proxy_->get_api_connection()->send_message(resp, api::BluetoothGATTNotifyDataResponse::MESSAGE_TYPE);
       break;
     }
@@ -265,7 +423,6 @@ esp32_ble_tracker::AdvertisementParserType BluetoothConnection::get_advertisemen
   return this->proxy_->get_advertisement_parser_type();
 }
 
-}  // namespace bluetooth_proxy
-}  // namespace esphome
+}  // namespace esphome::bluetooth_proxy
 
 #endif  // USE_ESP32

esphome/components/bluetooth_proxy/bluetooth_connection.h

@@ -4,14 +4,14 @@
 
 #include "esphome/components/esp32_ble_client/ble_client_base.h"
 
-namespace esphome {
-namespace bluetooth_proxy {
+namespace esphome::bluetooth_proxy {
 
 class BluetoothProxy;
 
 class BluetoothConnection : public esp32_ble_client::BLEClientBase {
  public:
   void dump_config() override;
+  void loop() override;
   bool gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
                            esp_ble_gattc_cb_param_t *param) override;
   void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) override;
@@ -27,6 +27,9 @@ class BluetoothConnection : public esp32_ble_client::BLEClientBase {
  protected:
   friend class BluetoothProxy;
 
+  void send_service_for_discovery_();
+  void reset_connection_(esp_err_t reason);
+
   // Memory optimized layout for 32-bit systems
   // Group 1: Pointers (4 bytes each, naturally aligned)
   BluetoothProxy *proxy_;
@@ -39,7 +42,6 @@ class BluetoothConnection : public esp32_ble_client::BLEClientBase {
   // 1 byte used, 1 byte padding
 };
 
-}  // namespace bluetooth_proxy
-}  // namespace esphome
+}  // namespace esphome::bluetooth_proxy
 
 #endif  // USE_ESP32

esphome/components/bluetooth_proxy/bluetooth_proxy.cpp

@@ -7,23 +7,9 @@
 
 #ifdef USE_ESP32
 
-namespace esphome {
-namespace bluetooth_proxy {
+namespace esphome::bluetooth_proxy {
 
 static const char *const TAG = "bluetooth_proxy";
-static const int DONE_SENDING_SERVICES = -2;
-
-std::vector<uint64_t> get_128bit_uuid_vec(esp_bt_uuid_t uuid_source) {
-  esp_bt_uuid_t uuid = espbt::ESPBTUUID::from_uuid(uuid_source).as_128bit().get_uuid();
-  return std::vector<uint64_t>{((uint64_t) uuid.uuid.uuid128[15] << 56) | ((uint64_t) uuid.uuid.uuid128[14] << 48) |
-                                   ((uint64_t) uuid.uuid.uuid128[13] << 40) | ((uint64_t) uuid.uuid.uuid128[12] << 32) |
-                                   ((uint64_t) uuid.uuid.uuid128[11] << 24) | ((uint64_t) uuid.uuid.uuid128[10] << 16) |
-                                   ((uint64_t) uuid.uuid.uuid128[9] << 8) | ((uint64_t) uuid.uuid.uuid128[8]),
-                               ((uint64_t) uuid.uuid.uuid128[7] << 56) | ((uint64_t) uuid.uuid.uuid128[6] << 48) |
-                                   ((uint64_t) uuid.uuid.uuid128[5] << 40) | ((uint64_t) uuid.uuid.uuid128[4] << 32) |
-                                   ((uint64_t) uuid.uuid.uuid128[3] << 24) | ((uint64_t) uuid.uuid.uuid128[2] << 16) |
-                                   ((uint64_t) uuid.uuid.uuid128[1] << 8) | ((uint64_t) uuid.uuid.uuid128[0])};
-}
 
 // Batch size for BLE advertisements to maximize WiFi efficiency
 // Each advertisement is up to 80 bytes when packaged (including protocol overhead)
@@ -140,46 +126,6 @@ void BluetoothProxy::flush_pending_advertisements() {
   this->advertisement_count_ = 0;
 }
 
-#ifdef USE_ESP32_BLE_DEVICE
-void BluetoothProxy::send_api_packet_(const esp32_ble_tracker::ESPBTDevice &device) {
-  api::BluetoothLEAdvertisementResponse resp;
-  resp.address = device.address_uint64();
-  resp.address_type = device.get_address_type();
-  if (!device.get_name().empty())
-    resp.name = device.get_name();
-  resp.rssi = device.get_rssi();
-
-  // Pre-allocate vectors based on known sizes
-  auto service_uuids = device.get_service_uuids();
-  resp.service_uuids.reserve(service_uuids.size());
-  for (auto &uuid : service_uuids) {
-    resp.service_uuids.emplace_back(uuid.to_string());
-  }
-
-  // Pre-allocate service data vector
-  auto service_datas = device.get_service_datas();
-  resp.service_data.reserve(service_datas.size());
-  for (auto &data : service_datas) {
-    resp.service_data.emplace_back();
-    auto &service_data = resp.service_data.back();
-    service_data.uuid = data.uuid.to_string();
-    service_data.data.assign(data.data.begin(), data.data.end());
-  }
-
-  // Pre-allocate manufacturer data vector
-  auto manufacturer_datas = device.get_manufacturer_datas();
-  resp.manufacturer_data.reserve(manufacturer_datas.size());
-  for (auto &data : manufacturer_datas) {
-    resp.manufacturer_data.emplace_back();
-    auto &manufacturer_data = resp.manufacturer_data.back();
-    manufacturer_data.uuid = data.uuid.to_string();
-    manufacturer_data.data.assign(data.data.begin(), data.data.end());
-  }
-
-  this->api_connection_->send_message(resp, api::BluetoothLEAdvertisementResponse::MESSAGE_TYPE);
-}
-#endif  // USE_ESP32_BLE_DEVICE
-
 void BluetoothProxy::dump_config() {
   ESP_LOGCONFIG(TAG, "Bluetooth Proxy:");
   ESP_LOGCONFIG(TAG,
@@ -213,130 +159,12 @@ void BluetoothProxy::loop() {
   }
 
   // Flush any pending BLE advertisements that have been accumulated but not yet sent
-  static uint32_t last_flush_time = 0;
   uint32_t now = App.get_loop_component_start_time();
 
   // Flush accumulated advertisements every 100ms
-  if (now - last_flush_time >= 100) {
+  if (now - this->last_advertisement_flush_time_ >= 100) {
     this->flush_pending_advertisements();
-    last_flush_time = now;
-  }
-  for (auto *connection : this->connections_) {
-    if (connection->send_service_ == connection->service_count_) {
-      connection->send_service_ = DONE_SENDING_SERVICES;
-      this->send_gatt_services_done(connection->get_address());
-      if (connection->connection_type_ == espbt::ConnectionType::V3_WITH_CACHE ||
-          connection->connection_type_ == espbt::ConnectionType::V3_WITHOUT_CACHE) {
-        connection->release_services();
-      }
-    } else if (connection->send_service_ >= 0) {
-      esp_gattc_service_elem_t service_result;
-      uint16_t service_count = 1;
-      esp_gatt_status_t service_status =
-          esp_ble_gattc_get_service(connection->get_gattc_if(), connection->get_conn_id(), nullptr, &service_result,
-                                    &service_count, connection->send_service_);
-      connection->send_service_++;
-      if (service_status != ESP_GATT_OK) {
-        ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_service error at offset=%d, status=%d",
-                 connection->get_connection_index(), connection->address_str().c_str(), connection->send_service_ - 1,
-                 service_status);
-        continue;
-      }
-      if (service_count == 0) {
-        ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_service missing, service_count=%d",
-                 connection->get_connection_index(), connection->address_str().c_str(), service_count);
-        continue;
-      }
-      api::BluetoothGATTGetServicesResponse resp;
-      resp.address = connection->get_address();
-      resp.services.reserve(1);  // Always one service per response in this implementation
-      api::BluetoothGATTService service_resp;
-      service_resp.uuid = get_128bit_uuid_vec(service_result.uuid);
-      service_resp.handle = service_result.start_handle;
-      uint16_t char_offset = 0;
-      esp_gattc_char_elem_t char_result;
-      // Get the number of characteristics directly with one call
-      uint16_t total_char_count = 0;
-      esp_gatt_status_t char_count_status = esp_ble_gattc_get_attr_count(
-          connection->get_gattc_if(), connection->get_conn_id(), ESP_GATT_DB_CHARACTERISTIC,
-          service_result.start_handle, service_result.end_handle, 0, &total_char_count);
-
-      if (char_count_status == ESP_GATT_OK && total_char_count > 0) {
-        // Only reserve if we successfully got a count
-        service_resp.characteristics.reserve(total_char_count);
-      } else if (char_count_status != ESP_GATT_OK) {
-        ESP_LOGW(TAG, "[%d] [%s] Error getting characteristic count, status=%d", connection->get_connection_index(),
-                 connection->address_str().c_str(), char_count_status);
-      }
-
-      // Now process characteristics
-      while (true) {  // characteristics
-        uint16_t char_count = 1;
-        esp_gatt_status_t char_status = esp_ble_gattc_get_all_char(
-            connection->get_gattc_if(), connection->get_conn_id(), service_result.start_handle,
-            service_result.end_handle, &char_result, &char_count, char_offset);
-        if (char_status == ESP_GATT_INVALID_OFFSET || char_status == ESP_GATT_NOT_FOUND) {
-          break;
-        }
-        if (char_status != ESP_GATT_OK) {
-          ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_all_char error, status=%d", connection->get_connection_index(),
-                   connection->address_str().c_str(), char_status);
-          break;
-        }
-        if (char_count == 0) {
-          break;
-        }
-        api::BluetoothGATTCharacteristic characteristic_resp;
-        characteristic_resp.uuid = get_128bit_uuid_vec(char_result.uuid);
-        characteristic_resp.handle = char_result.char_handle;
-        characteristic_resp.properties = char_result.properties;
-        char_offset++;
-
-        // Get the number of descriptors directly with one call
-        uint16_t total_desc_count = 0;
-        esp_gatt_status_t desc_count_status =
-            esp_ble_gattc_get_attr_count(connection->get_gattc_if(), connection->get_conn_id(), ESP_GATT_DB_DESCRIPTOR,
-                                         char_result.char_handle, service_result.end_handle, 0, &total_desc_count);
-
-        if (desc_count_status == ESP_GATT_OK && total_desc_count > 0) {
-          // Only reserve if we successfully got a count
-          characteristic_resp.descriptors.reserve(total_desc_count);
-        } else if (desc_count_status != ESP_GATT_OK) {
-          ESP_LOGW(TAG, "[%d] [%s] Error getting descriptor count for char handle %d, status=%d",
-                   connection->get_connection_index(), connection->address_str().c_str(), char_result.char_handle,
-                   desc_count_status);
-        }
-
-        // Now process descriptors
-        uint16_t desc_offset = 0;
-        esp_gattc_descr_elem_t desc_result;
-        while (true) {  // descriptors
-          uint16_t desc_count = 1;
-          esp_gatt_status_t desc_status =
-              esp_ble_gattc_get_all_descr(connection->get_gattc_if(), connection->get_conn_id(),
-                                          char_result.char_handle, &desc_result, &desc_count, desc_offset);
-          if (desc_status == ESP_GATT_INVALID_OFFSET || desc_status == ESP_GATT_NOT_FOUND) {
-            break;
-          }
-          if (desc_status != ESP_GATT_OK) {
-            ESP_LOGE(TAG, "[%d] [%s] esp_ble_gattc_get_all_descr error, status=%d", connection->get_connection_index(),
-                     connection->address_str().c_str(), desc_status);
-            break;
-          }
-          if (desc_count == 0) {
-            break;
-          }
-          api::BluetoothGATTDescriptor descriptor_resp;
-          descriptor_resp.uuid = get_128bit_uuid_vec(desc_result.uuid);
-          descriptor_resp.handle = desc_result.handle;
-          characteristic_resp.descriptors.push_back(std::move(descriptor_resp));
-          desc_offset++;
-        }
-        service_resp.characteristics.push_back(std::move(characteristic_resp));
-      }
-      resp.services.push_back(std::move(service_resp));
-      this->api_connection_->send_message(resp, api::BluetoothGATTGetServicesResponse::MESSAGE_TYPE);
-    }
+    this->last_advertisement_flush_time_ = now;
   }
 }
 
@@ -673,7 +501,6 @@ void BluetoothProxy::bluetooth_scanner_set_mode(bool active) {
 
 BluetoothProxy *global_bluetooth_proxy = nullptr;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
-}  // namespace bluetooth_proxy
-}  // namespace esphome
+}  // namespace esphome::bluetooth_proxy
 
 #endif  // USE_ESP32

esphome/components/bluetooth_proxy/bluetooth_proxy.h

@@ -18,10 +18,10 @@
 #include <esp_bt.h>
 #include <esp_bt_device.h>
 
-namespace esphome {
-namespace bluetooth_proxy {
+namespace esphome::bluetooth_proxy {
 
 static const esp_err_t ESP_GATT_NOT_CONNECTED = -1;
+static const int DONE_SENDING_SERVICES = -2;
 
 using namespace esp32_ble_client;
 
@@ -131,9 +131,6 @@ class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Com
   }
 
  protected:
-#ifdef USE_ESP32_BLE_DEVICE
-  void send_api_packet_(const esp32_ble_tracker::ESPBTDevice &device);
-#endif
   void send_bluetooth_scanner_state_(esp32_ble_tracker::ScannerState state);
 
   BluetoothConnection *get_connection_(uint64_t address, bool reserve);
@@ -149,7 +146,10 @@ class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Com
   std::vector<api::BluetoothLERawAdvertisement> advertisement_pool_;
   std::unique_ptr<api::BluetoothLERawAdvertisementsResponse> response_;
 
-  // Group 3: 1-byte types grouped together
+  // Group 3: 4-byte types
+  uint32_t last_advertisement_flush_time_{0};
+
+  // Group 4: 1-byte types grouped together
   bool active_;
   uint8_t advertisement_count_{0};
   // 2 bytes used, 2 bytes padding
@@ -157,7 +157,6 @@ class BluetoothProxy : public esp32_ble_tracker::ESPBTDeviceListener, public Com
 
 extern BluetoothProxy *global_bluetooth_proxy;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
-}  // namespace bluetooth_proxy
-}  // namespace esphome
+}  // namespace esphome::bluetooth_proxy
 
 #endif  // USE_ESP32

esphome/components/bme280_base/bme280_base.cpp

@@ -88,7 +88,6 @@ const char *oversampling_to_str(BME280Oversampling oversampling) {  // NOLINT
 }
 
 void BME280Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t chip_id = 0;
 
   // Mark as not failed before initializing. Some devices will turn off sensors to save on batteries

esphome/components/bme680/bme680.cpp

@@ -71,7 +71,6 @@ static const char *iir_filter_to_str(BME680IIRFilter filter) {
 }
 
 void BME680Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t chip_id;
   if (!this->read_byte(BME680_REGISTER_CHIPID, &chip_id) || chip_id != 0x61) {
     this->mark_failed();

esphome/components/bme680_bsec/__init__.py

@@ -1,7 +1,7 @@
 import esphome.codegen as cg
 from esphome.components import esp32, i2c
 import esphome.config_validation as cv
-from esphome.const import CONF_ID, CONF_SAMPLE_RATE, CONF_TEMPERATURE_OFFSET
+from esphome.const import CONF_ID, CONF_SAMPLE_RATE, CONF_TEMPERATURE_OFFSET, Framework
 
 CODEOWNERS = ["@trvrnrth"]
 DEPENDENCIES = ["i2c"]
@@ -56,7 +56,15 @@ CONFIG_SCHEMA = cv.All(
             ): cv.positive_time_period_minutes,
         }
     ).extend(i2c.i2c_device_schema(0x76)),
-    cv.only_with_arduino,
+    cv.only_with_framework(
+        frameworks=Framework.ARDUINO,
+        suggestions={
+            Framework.ESP_IDF: (
+                "bme68x_bsec2_i2c",
+                "sensor/bme68x_bsec2",
+            )
+        },
+    ),
     cv.Any(
         cv.only_on_esp8266,
         cv.All(

esphome/components/bme680_bsec/bme680_bsec.cpp

@@ -15,8 +15,6 @@ std::vector<BME680BSECComponent *>
 uint8_t BME680BSECComponent::work_buffer_[BSEC_MAX_WORKBUFFER_SIZE] = {0};
 
 void BME680BSECComponent::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup for '%s'", this->device_id_.c_str());
-
   uint8_t new_idx = BME680BSECComponent::instances.size();
   BME680BSECComponent::instances.push_back(this);
 

esphome/components/bme68x_bsec2/bme68x_bsec2.cpp

@@ -21,8 +21,6 @@ static const char *const TAG = "bme68x_bsec2.sensor";
 static const std::string IAQ_ACCURACY_STATES[4] = {"Stabilizing", "Uncertain", "Calibrating", "Calibrated"};
 
 void BME68xBSEC2Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   this->bsec_status_ = bsec_init_m(&this->bsec_instance_);
   if (this->bsec_status_ != BSEC_OK) {
     this->mark_failed();

esphome/components/bmi160/bmi160.cpp

@@ -119,7 +119,6 @@ const float GRAVITY_EARTH = 9.80665f;
 void BMI160Component::internal_setup_(int stage) {
   switch (stage) {
     case 0:
-      ESP_LOGCONFIG(TAG, "Running setup");
       uint8_t chipid;
       if (!this->read_byte(BMI160_REGISTER_CHIPID, &chipid) || (chipid != 0b11010001)) {
         this->mark_failed();

esphome/components/bmp085/bmp085.cpp

@@ -20,7 +20,6 @@ void BMP085Component::update() {
   this->set_timeout("temperature", 5, [this]() { this->read_temperature_(); });
 }
 void BMP085Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t data[22];
   if (!this->read_bytes(BMP085_REGISTER_AC1_H, data, 22)) {
     this->mark_failed();

esphome/components/bmp280_base/bmp280_base.cpp

@@ -57,7 +57,6 @@ static const char *iir_filter_to_str(BMP280IIRFilter filter) {
 }
 
 void BMP280Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t chip_id = 0;
 
   // Read the chip id twice, to work around a bug where the first read is 0.

esphome/components/bmp3xx_base/bmp3xx_base.cpp

@@ -70,7 +70,6 @@ static const LogString *iir_filter_to_str(IIRFilter filter) {
 
 void BMP3XXComponent::setup() {
   this->error_code_ = NONE;
-  ESP_LOGCONFIG(TAG, "Running setup");
   // Call the Device base class "initialise" function
   if (!reset()) {
     ESP_LOGE(TAG, "Failed to reset");

esphome/components/bmp581/bmp581.cpp

@@ -128,8 +128,6 @@ void BMP581Component::setup() {
    */
 
   this->error_code_ = NONE;
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   ////////////////////
   // 1) Soft reboot //
   ////////////////////

esphome/components/bp1658cj/bp1658cj.cpp

@@ -15,7 +15,6 @@ static const uint8_t BP1658CJ_ADDR_START_5CH = 0x30;
 static const uint8_t BP1658CJ_DELAY = 2;
 
 void BP1658CJ::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   this->data_pin_->setup();
   this->data_pin_->digital_write(false);
   this->clock_pin_->setup();

esphome/components/bp5758d/bp5758d.cpp

@@ -20,7 +20,6 @@ static const uint8_t BP5758D_ALL_DATA_CHANNEL_ENABLEMENT = 0b00011111;
 static const uint8_t BP5758D_DELAY = 2;
 
 void BP5758D::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   this->data_pin_->setup();
   this->data_pin_->digital_write(false);
   delayMicroseconds(BP5758D_DELAY);

esphome/components/canbus/__init__.py

@@ -22,9 +22,8 @@ def validate_id(config):
     if CONF_CAN_ID in config:
         can_id = config[CONF_CAN_ID]
         id_ext = config[CONF_USE_EXTENDED_ID]
-        if not id_ext:
-            if can_id > 0x7FF:
-                raise cv.Invalid("Standard IDs must be 11 Bit (0x000-0x7ff / 0-2047)")
+        if not id_ext and can_id > 0x7FF:
+            raise cv.Invalid("Standard IDs must be 11 Bit (0x000-0x7ff / 0-2047)")
     return config
 
 

esphome/components/canbus/canbus.cpp

@@ -7,7 +7,6 @@ namespace canbus {
 static const char *const TAG = "canbus";
 
 void Canbus::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (!this->setup_internal()) {
     ESP_LOGE(TAG, "setup error!");
     this->mark_failed();

esphome/components/cap1188/cap1188.cpp

@@ -8,8 +8,6 @@ namespace cap1188 {
 static const char *const TAG = "cap1188";
 
 void CAP1188Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   // Reset device using the reset pin
   if (this->reset_pin_ != nullptr) {
     this->reset_pin_->setup();

esphome/components/cd74hc4067/cd74hc4067.cpp

@@ -10,8 +10,6 @@ static const char *const TAG = "cd74hc4067";
 float CD74HC4067Component::get_setup_priority() const { return setup_priority::DATA; }
 
 void CD74HC4067Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   this->pin_s0_->setup();
   this->pin_s1_->setup();
   this->pin_s2_->setup();

esphome/components/ch422g/ch422g.cpp

@@ -14,7 +14,6 @@ static const uint8_t CH422G_REG_OUT_UPPER = 0x23;    // write reg for output bit
 static const char *const TAG = "ch422g";
 
 void CH422GComponent::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   // set outputs before mode
   this->write_outputs_();
   // Set mode and check for errors

esphome/components/chsc6x/chsc6x_touchscreen.cpp

@@ -4,7 +4,6 @@ namespace esphome {
 namespace chsc6x {
 
 void CHSC6XTouchscreen::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (this->interrupt_pin_ != nullptr) {
     this->interrupt_pin_->setup();
     this->attach_interrupt_(this->interrupt_pin_, gpio::INTERRUPT_FALLING_EDGE);
@@ -15,8 +14,6 @@ void CHSC6XTouchscreen::setup() {
   if (this->y_raw_max_ == this->y_raw_min_) {
     this->y_raw_max_ = this->display_->get_native_height();
   }
-
-  ESP_LOGCONFIG(TAG, "CHSC6X Touchscreen setup complete");
 }
 
 void CHSC6XTouchscreen::update_touches() {

esphome/components/cm1106/cm1106.cpp

@@ -20,7 +20,6 @@ uint8_t cm1106_checksum(const uint8_t *response, size_t len) {
 }
 
 void CM1106Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   uint8_t response[8] = {0};
   if (!this->cm1106_write_command_(C_M1106_CMD_GET_CO2, sizeof(C_M1106_CMD_GET_CO2), response, sizeof(response))) {
     ESP_LOGE(TAG, ESP_LOG_MSG_COMM_FAIL);

esphome/components/const/__init__.py

@@ -3,7 +3,12 @@
 CODEOWNERS = ["@esphome/core"]
 
 CONF_BYTE_ORDER = "byte_order"
+BYTE_ORDER_LITTLE = "little_endian"
+BYTE_ORDER_BIG = "big_endian"
+
 CONF_COLOR_DEPTH = "color_depth"
 CONF_DRAW_ROUNDING = "draw_rounding"
+CONF_ON_RECEIVE = "on_receive"
 CONF_ON_STATE_CHANGE = "on_state_change"
 CONF_REQUEST_HEADERS = "request_headers"
+CONF_USE_PSRAM = "use_psram"

esphome/components/cs5460a/cs5460a.cpp

@@ -52,8 +52,6 @@ bool CS5460AComponent::softreset_() {
 }
 
 void CS5460AComponent::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   float current_full_scale = (pga_gain_ == CS5460A_PGA_GAIN_10X) ? 0.25 : 0.10;
   float voltage_full_scale = 0.25;
   current_multiplier_ = current_full_scale / (fabsf(current_gain_) * 0x1000000);

esphome/components/cse7761/cse7761.cpp

@@ -42,7 +42,6 @@ static const uint8_t CSE7761_CMD_ENABLE_WRITE = 0xE5;  // Enable write operation
 enum CSE7761 { RMS_IAC, RMS_IBC, RMS_UC, POWER_PAC, POWER_PBC, POWER_SC, ENERGY_AC, ENERGY_BC };
 
 void CSE7761Component::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   this->write_(CSE7761_SPECIAL_COMMAND, CSE7761_CMD_RESET);
   uint16_t syscon = this->read_(0x00, 2);  // Default 0x0A04
   if ((0x0A04 == syscon) && this->chip_init_()) {

esphome/components/cst226/touchscreen/cst226_touchscreen.cpp

@@ -6,7 +6,6 @@ namespace cst226 {
 static const char *const TAG = "cst226.touchscreen";
 
 void CST226Touchscreen::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (this->reset_pin_ != nullptr) {
     this->reset_pin_->setup();
     this->reset_pin_->digital_write(true);
@@ -95,7 +94,6 @@ void CST226Touchscreen::continue_setup_() {
     }
   }
   this->setup_complete_ = true;
-  ESP_LOGCONFIG(TAG, "CST226 Touchscreen setup complete");
 }
 void CST226Touchscreen::update_button_state_(bool state) {
   if (this->button_touched_ == state)

esphome/components/cst816/touchscreen/cst816_touchscreen.cpp

@@ -35,11 +35,9 @@ void CST816Touchscreen::continue_setup_() {
   if (this->y_raw_max_ == this->y_raw_min_) {
     this->y_raw_max_ = this->display_->get_native_height();
   }
-  ESP_LOGCONFIG(TAG, "CST816 Touchscreen setup complete");
 }
 
 void CST816Touchscreen::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (this->reset_pin_ != nullptr) {
     this->reset_pin_->setup();
     this->reset_pin_->digital_write(true);

esphome/components/dac7678/dac7678_output.cpp

@@ -20,8 +20,6 @@ static const uint8_t DAC7678_REG_INTERNAL_REF_0 = 0x80;
 static const uint8_t DAC7678_REG_INTERNAL_REF_1 = 0x90;
 
 void DAC7678Output::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
-
   ESP_LOGV(TAG, "Resetting device");
 
   // Reset device

esphome/components/dallas_temp/dallas_temp.cpp

@@ -70,7 +70,6 @@ bool DallasTemperatureSensor::read_scratch_pad_() {
 }
 
 void DallasTemperatureSensor::setup() {
-  ESP_LOGCONFIG(TAG, "Running setup");
   if (!this->check_address_())
     return;
   if (!this->read_scratch_pad_())