chore: update CI workflows and add labeler configuration

.github/labeler.yml

@@ -0,0 +1,38 @@
+firmware:
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/**
+          - lib/**
+          - open-x4-sdk/**
+
+ui:
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/activities/**
+          - src/network/html/**
+          - docs/images/**
+
+epub:
+  - changed-files:
+      - any-glob-to-any-file:
+          - lib/Epub/**
+
+network:
+  - changed-files:
+      - any-glob-to-any-file:
+          - src/network/**
+          - src/util/UrlUtils.*
+          - lib/OpdsParser/**
+
+docs:
+  - changed-files:
+      - any-glob-to-any-file:
+          - docs/**
+          - README*
+          - CHANGELOG*
+
+tests:
+  - changed-files:
+      - any-glob-to-any-file:
+          - test/**
+          - scripts/**

.github/workflows/ci.yml

@@ -9,7 +9,34 @@ permissions:
   pull-requests: write
 
 jobs:
-  build:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v5
+
+  clang-format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          submodules: recursive
+
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.14'
+
+      - name: Install clang-format-21
+        run: |
+          wget https://apt.llvm.org/llvm.sh
+          chmod +x llvm.sh
+          sudo ./llvm.sh 21
+          sudo apt-get update
+          sudo apt-get install -y clang-format-21
+
+      - name: Run clang-format
+        run: PATH="/usr/lib/llvm-21/bin:$PATH" ./bin/clang-format-fix && git diff --exit-code || (echo "Please run 'bin/clang-format-fix' to fix formatting issues" && exit 1)
+
+  cppcheck:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
@@ -23,19 +50,22 @@ jobs:
       - name: Install PlatformIO Core
         run: pip install --upgrade platformio
 
-      - name: Install clang-format-21
-        run: |
-          wget https://apt.llvm.org/llvm.sh
-          chmod +x llvm.sh
-          sudo ./llvm.sh 21
-          sudo apt-get update
-          sudo apt-get install -y clang-format-21
-
       - name: Run cppcheck
         run: pio check --fail-on-defect low --fail-on-defect medium --fail-on-defect high
 
-      - name: Run clang-format
+  build:
-        run: PATH="/usr/lib/llvm-21/bin:$PATH" ./bin/clang-format-fix && git diff --exit-code || (echo "Please run 'bin/clang-format-fix' to fix formatting issues" && exit 1)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          submodules: recursive
+
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.14'
+
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
 
       - name: Build CrossPoint
         run: |

.github/workflows/pr-formatting-check.yml

@@ -9,6 +9,7 @@ on:
 
 permissions:
   statuses: write
+  pull-requests: write
 
 jobs:
   title-check:
@@ -21,6 +22,44 @@ jobs:
           egress-policy: audit
 
       - name: Check PR Title
+        id: title_check
         uses: amannn/action-semantic-pull-request@v6
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Comment with changelog hint on failure
+        if: failure()
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const marker = '<!-- pr-title-check -->';
+            const error =
+              `${{ steps.title_check.outputs.error_message || steps.title_check.outputs.error || '' }}`.trim();
+            const details = error ? `\n\n**Error:** ${error}` : '\n\n**Error:** See workflow logs.';
+            const body = `${marker}
+            **PR title check failed**
+
+            Please use a Conventional Commit-style prefix (e.g., \`feat:\`, \`fix:\`, \`docs:\`, \`chore:\`).
+            If this change should appear in release notes, ensure the title reflects the correct category.${details}`;
+
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+            });
+            const existing = comments.find((comment) => comment.body && comment.body.includes(marker));
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: existing.id,
+                body,
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body,
+              });
+            }