Align CI to the reusable chain

Fleet CI-conformance wave (principal grant 2026-07-09): org-canonical wrapper, no-cache policy, bespoke matrices retired.

Claude-Session: https://claude.ai/code/session_01SCLPrXaUEPajDQtctNmSBQ

Author: coenttb

.github/workflows/ci.yml

@@ -14,72 +14,13 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  # Primary development workflow: Latest Swift on macOS with debug build
-  macos-latest:
-    name: macOS (Swift 6.2, debug)
-    runs-on: macos-26
-    steps:
-      - uses: actions/checkout@v5
-
-      - name: Select Xcode 26.0
-        run: sudo xcode-select -s /Applications/Xcode_26.0.app
-
-      - name: Print Swift version
-        run: swift --version
-
-      - name: Cache Swift packages
-        uses: actions/cache@v4
-        with:
-          path: .build
-          key: ${{ runner.os }}-spm-${{ hashFiles('Package.swift') }}
-          restore-keys: |
-            ${{ runner.os }}-spm-
-
-      # Note: swift test builds automatically, no separate build step needed
-      - name: Test
-        run: swift test -c debug
-
-      - name: Validate Package.swift
-        run: swift package dump-package
-
-      - name: Check for API breaking changes
-        run: swift package diagnose-api-breaking-changes --breakage-allowlist-path .swift-api-breakage-allowlist || true
-        continue-on-error: true
-
-  # Production validation: Latest Swift on Linux with release build
-  linux-latest:
-    name: Ubuntu (Swift 6.2, release)
-    runs-on: ubuntu-latest
-    container: swift:6.2
-    steps:
-      - uses: actions/checkout@v5
-
-      - name: Cache Swift packages
-        uses: actions/cache@v4
-        with:
-          path: .build
-          key: ${{ runner.os }}-spm-${{ hashFiles('Package.swift') }}
-          restore-keys: ${{ runner.os }}-spm-
-
-      # Note: swift test builds automatically in release mode
-      - name: Test (release)
-        run: swift test -c release
-
-  # Compatibility check: Minimum supported Swift version (6.1)
-  linux-compat:
-    name: Ubuntu (Swift 6.1, compatibility)
-    runs-on: ubuntu-latest
-    container: swift:6.1
-    steps:
-      - uses: actions/checkout@v5
-
-      - name: Cache Swift packages
-        uses: actions/cache@v4
-        with:
-          path: .build
-          key: ${{ runner.os }}-swift61-spm-${{ hashFiles('Package.swift') }}
-          restore-keys: ${{ runner.os }}-swift61-spm-
-
-      # Note: swift test builds automatically
-      - name: Test (Swift 6.1)
-        run: swift test -c release
+  # Build + test matrix — see swift-foundations/.github/.github/workflows/swift-ci.yml (layer wrapper)
+  ci:
+    uses: swift-foundations/.github/.github/workflows/swift-ci.yml@main
+    secrets: inherit
+
+  # DocC umbrella-catalog pipeline per [DOC-019a] — see
+  # swift-foundations/.github/.github/workflows/swift-docs.yml
+  docs:
+    uses: swift-foundations/.github/.github/workflows/swift-docs.yml@main
+    secrets: inherit