ci: add Gitea Actions workflows

Adapt GitHub Actions workflows for self-hosted Gitea instance:
- CI workflow with PlatformIO build, cppcheck, and clang-format
- PR title format checker using conventional commits
- Release workflow for tagged builds

Keeps original .github/workflows/ for upstream compatibility.

.gitea/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+'on':
+  push:
+    branches: [master, crosspoint-ef]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - 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
+        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)
+
+      - name: Build CrossPoint
+        run: pio run

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

@@ -0,0 +1,40 @@
+name: "PR Formatting"
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - edited
+      - synchronize
+
+jobs:
+  title-check:
+    name: Title Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check PR Title Format
+        run: |
+          PR_TITLE="${{ github.event.pull_request.title }}"
+          echo "Checking PR title: $PR_TITLE"
+          
+          # Conventional commit pattern: type(scope): description or type: description
+          # Types: feat, fix, docs, style, refactor, perf, test, build, ci, chore, revert
+          PATTERN="^(feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert)(\([a-zA-Z0-9_-]+\))?: .+"
+          
+          if echo "$PR_TITLE" | grep -qE "$PATTERN"; then
+            echo "✓ PR title follows conventional commit format"
+          else
+            echo "✗ PR title does not follow conventional commit format"
+            echo ""
+            echo "Expected format: type(scope): description"
+            echo "  or: type: description"
+            echo ""
+            echo "Valid types: feat, fix, docs, style, refactor, perf, test, build, ci, chore, revert"
+            echo ""
+            echo "Examples:"
+            echo "  feat(reader): add bookmark sync feature"
+            echo "  fix: resolve memory leak in epub parser"
+            echo "  docs: update README with new instructions"
+            exit 1
+          fi

.gitea/workflows/release.yml

@@ -0,0 +1,41 @@
+name: Compile Release
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  build-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.platformio/.cache
+          key: ${{ runner.os }}-pio
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
+
+      - name: Build CrossPoint
+        run: pio run -e gh_release
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: CrossPoint-${{ github.ref_name }}
+          path: |
+            .pio/build/gh_release/bootloader.bin
+            .pio/build/gh_release/firmware.bin
+            .pio/build/gh_release/firmware.elf
+            .pio/build/gh_release/firmware.map
+            .pio/build/gh_release/partitions.bin

.gitignore

@@ -11,3 +11,7 @@ build
 **/__pycache__/
 test/epubs/
 CrossPoint-ef.md
+
+# Gitea Actions runner config (contains credentials)
+.runner
+.runner.*