ci(automation): 补齐持续集成与开源安全检查 (#1)

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    groups:
+      actions:
+        patterns: ['*']
+    commit-message:
+      prefix: chore(deps)
+    open-pull-requests-limit: 5

.github/workflows/ci.yml

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+name: CI
+on:
+  push:
+    branches: [main]
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+permissions:
+  contents: read
+concurrency:
+  group: ci-${{ github.event_name }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  native:
+    name: Native / ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-24.04, macos-15, windows-2025]
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Configure decoder regression tests
+        run: cmake -S tests -B build -DCMAKE_BUILD_TYPE=Release
+      - name: Configure dictionary builder
+        run: cmake -S command -B build-dictionary -DCMAKE_BUILD_TYPE=Release
+      - name: Build dictionary builder
+        run: cmake --build build-dictionary --config Release --parallel 4
+      - name: Build
+        run: cmake --build build --config Release --parallel 4
+      - name: Run regression tests
+        run: ctest --test-dir build -C Release --output-on-failure --no-tests=error --timeout 30

.github/workflows/codeql.yml

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+name: CodeQL
+on:
+  push:
+    branches: [main]
+  pull_request:
+  schedule:
+    - cron: '15 3 * * 1'
+  workflow_dispatch:
+permissions:
+  contents: read
+concurrency:
+  group: codeql-${{ github.event_name }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  analyze:
+    name: CodeQL / ${{ matrix.language }}
+    runs-on: ubuntu-24.04
+    timeout-minutes: 30
+    permissions:
+      contents: read
+      security-events: write
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [actions, c-cpp, python]
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: github/codeql-action/init@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4
+        with:
+          languages: ${{ matrix.language }}
+          # C/C++ source analysis complements, rather than replaces, native build CI.
+          build-mode: none
+      - uses: github/codeql-action/analyze@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4
+        with:
+          category: '/language:${{ matrix.language }}'

.github/workflows/quality.yml

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+name: Repository quality
+on:
+  push:
+    branches: [main]
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+permissions:
+  contents: read
+concurrency:
+  group: quality-${{ github.event_name }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  workflows:
+    name: Workflow validation
+    runs-on: ubuntu-24.04
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6
+        with:
+          go-version: '1.26'
+          cache: false
+      - name: Install actionlint
+        run: go install github.com/rhysd/actionlint/cmd/actionlint@v1.7.12
+      - name: Validate workflows and embedded shell scripts
+        env:
+          # Ignore style suggestions, but fail on shell correctness warnings and errors.
+          SHELLCHECK_OPTS: --severity=warning
+        run: actionlint -color
+  dependencies:
+    name: Dependency review
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-24.04
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: actions/dependency-review-action@2031cfc080254a8a887f58cffee85186f0e49e48 # v4
+        with:
+          fail-on-severity: high