Merge branch main into release-app-Microsoft.App-stable/2026-01-01--1

.github/workflows/_reusable-set-check-status.yaml

@@ -37,7 +37,7 @@ jobs:
         ((github.event.action == 'labeled' || github.event.action == 'unlabeled') &&
          inputs.overriding_label && contains(inputs.overriding_label, github.event.label.name))))
 
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
 
     steps:
       # *** IMPORTANT ***

.github/workflows/arm-auto-signoff-status.yaml

@@ -52,7 +52,7 @@ jobs:
         github.event.label.name == 'NotReadyForARMReview' ||
         github.event.label.name == 'SuppressionReviewRequired'))
 
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
 
     steps:
       # *** IMPORTANT ***

.github/workflows/breaking-change-add-label-artifacts.yaml

@@ -19,7 +19,7 @@ jobs:
   breaking-change-add-label-artifacts:
     name: "Breaking Change - Add Label Artifacts"
 
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
 
     steps:
       # *** IMPORTANT ***

.github/workflows/post-apiview.yaml

@@ -11,7 +11,7 @@ permissions:
 jobs:
   post-apiview:
     name: After APIView
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
     if: |
       github.event.check_run.check_suite.app.name == 'Azure Pipelines' && (
       contains(github.event.check_run.name, 'APIView') ||

.github/workflows/sdk-breaking-change-labels.yaml

@@ -16,7 +16,7 @@ jobs:
       github.event.check_run.check_suite.app.name == 'Azure Pipelines' &&
       contains(github.event.check_run.name, 'SDK Validation')
     name: SDK Breaking Change Labels
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
     steps:
       - uses: actions/checkout@v6
         with:

.github/workflows/spec-gen-sdk-status.yaml

@@ -16,7 +16,7 @@ jobs:
       github.event.check_run.check_suite.app.name == 'Azure Pipelines' &&
       contains(github.event.check_run.name, 'SDK Validation')
     name: "SDK Validation Status"
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
     steps:
       - uses: actions/checkout@v6
         with:

.github/workflows/src/arm-auto-signoff/pr-changes.js

@@ -8,6 +8,9 @@ export class PullRequestChanges {
   /** @type {boolean} */
   rmExamples = false;
 
+  /** @type {boolean} */
+  rmTypeSpec = false;
+
   /** @type {boolean} */
   rmFunctional = false;
 
@@ -21,6 +24,7 @@ export class PullRequestChanges {
    * A PR is trivial if it contains only:
    * - Documentation changes
    * - Example changes
+   * - TypeSpec file changes (.tsp, tspconfig.yaml)
    * and does NOT contain:
    * - Functional spec changes
    * - Other file types
@@ -29,7 +33,7 @@ export class PullRequestChanges {
    */
   isTrivial() {
     const hasNoBlockingChanges = !this.rmFunctional && !this.rmOther && !this.other;
-    const hasTrivialChanges = this.rmDocumentation || this.rmExamples;
+    const hasTrivialChanges = this.rmDocumentation || this.rmExamples || this.rmTypeSpec;
     return hasNoBlockingChanges && hasTrivialChanges;
   }
 
@@ -38,7 +42,12 @@ export class PullRequestChanges {
    */
   isDocumentationOnly() {
     return (
-      this.rmDocumentation && !this.rmExamples && !this.rmFunctional && !this.rmOther && !this.other
+      this.rmDocumentation &&
+      !this.rmExamples &&
+      !this.rmTypeSpec &&
+      !this.rmFunctional &&
+      !this.rmOther &&
+      !this.other
     );
   }
 
@@ -47,7 +56,12 @@ export class PullRequestChanges {
    */
   isExamplesOnly() {
     return (
-      !this.rmDocumentation && this.rmExamples && !this.rmFunctional && !this.rmOther && !this.other
+      !this.rmDocumentation &&
+      this.rmExamples &&
+      !this.rmTypeSpec &&
+      !this.rmFunctional &&
+      !this.rmOther &&
+      !this.other
     );
   }
 }

.github/workflows/src/arm-auto-signoff/trivial-changes-check.js

@@ -8,6 +8,7 @@ import {
   markdown,
   resourceManager,
   swagger,
+  typespec,
 } from "../../../shared/src/changed-files.js";
 import { CoreLogger } from "../core-logger.js";
 import { PullRequestChanges } from "./pr-changes.js";
@@ -136,6 +137,20 @@ function hasSignificantFileOperations(changedFilesStatuses, core) {
     return true;
   }
 
+  // New TypeSpec files are non-trivial (conservative approach)
+  const newTypeSpecFiles = changedFilesStatuses.additions.filter(typespec);
+  if (newTypeSpecFiles.length > 0) {
+    core.info(`Significant: New TypeSpec files detected: ${newTypeSpecFiles.join(", ")}`);
+    return true;
+  }
+
+  // Deleted TypeSpec files are non-trivial (conservative approach)
+  const deletedTypeSpecFiles = changedFilesStatuses.deletions.filter(typespec);
+  if (deletedTypeSpecFiles.length > 0) {
+    core.info(`Significant: Deleted TypeSpec files detected: ${deletedTypeSpecFiles.join(", ")}`);
+    return true;
+  }
+
   // Any file renames/moves are non-trivial (conservative approach)
   if (changedFilesStatuses.renames.length > 0) {
     core.info(
@@ -161,12 +176,13 @@ async function analyzeAndUpdatePullRequestChanges(changedFiles, git, core, chang
   const documentationFiles = changedFiles.filter(markdown);
   const exampleFiles = changedFiles.filter(example);
   const specFiles = changedFiles.filter(swagger);
+  const typespecFiles = changedFiles.filter(typespec);
   const otherFiles = changedFiles.filter(
-    (file) => !markdown(file) && !example(file) && !swagger(file),
+    (file) => !markdown(file) && !example(file) && !swagger(file) && !typespec(file),
   );
 
   core.info(
-    `File breakdown: ${documentationFiles.length} docs, ${exampleFiles.length} examples, ${specFiles.length} specs, ${otherFiles.length} other`,
+    `File breakdown: ${documentationFiles.length} docs, ${exampleFiles.length} examples, ${specFiles.length} specs, ${typespecFiles.length} typespec, ${otherFiles.length} other`,
   );
 
   // Set flags for file types present
@@ -178,6 +194,10 @@ async function analyzeAndUpdatePullRequestChanges(changedFiles, git, core, chang
     changes.rmExamples = true;
   }
 
+  if (typespecFiles.length > 0) {
+    changes.rmTypeSpec = true;
+  }
+
   if (otherFiles.length > 0) {
     changes.rmOther = true;
   }

.github/workflows/summarize-checks.yaml

@@ -36,7 +36,7 @@ jobs:
   run-summarize-checks:
     if: ${{ github.event_name == 'pull_request_target' || github.event.workflow_run.conclusion != 'skipped' }}
     name: "Summarize Checks"
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-slim
 
     steps:
       # *** IMPORTANT ***