feat(protection): implement multi-layered protection for feature_list.json

Introduces a comprehensive strategy to safeguard the feature_list.json file from accidental modifications. Key enhancements include:

1. **Prompt-Level Warnings**: Added explicit warnings in agent prompts to prevent direct modifications.
2. **Dedicated MCP Tool**: Implemented the UpdateFeatureStatus tool for safe feature updates.
3. **File-Level Validation & Auto-Backup**: Added validation checks and automatic backups before modifications to prevent data loss.
4. **Tool Access Control**: Restricted agent access to critical tools, ensuring only the designated MCP tool can modify the feature list.

This update significantly reduces the risk of catastrophic data loss and ensures a robust feature management process.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

.github/workflows/release.yml

@@ -0,0 +1,82 @@
+name: Build and Release Electron App
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'  # Triggers on version tags like v1.0.0
+  workflow_dispatch:  # Allows manual triggering
+    inputs:
+      version:
+        description: 'Version to release (e.g., v1.0.0)'
+        required: true
+        default: 'v0.1.0'
+
+jobs:
+  build-and-release:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            name: macOS
+          - os: windows-latest
+            name: Windows
+          - os: ubuntu-latest
+            name: Linux
+
+    runs-on: ${{ matrix.os }}
+
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: app/package-lock.json
+
+      - name: Install dependencies
+        working-directory: ./app
+        run: npm ci
+
+      - name: Build Electron App (macOS)
+        if: matrix.os == 'macos-latest'
+        working-directory: ./app
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npm run build:electron -- --mac --x64 --arm64
+
+      - name: Build Electron App (Windows)
+        if: matrix.os == 'windows-latest'
+        working-directory: ./app
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npm run build:electron -- --win --x64
+
+      - name: Build Electron App (Linux)
+        if: matrix.os == 'ubuntu-latest'
+        working-directory: ./app
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npm run build:electron -- --linux --x64
+
+      - name: Upload Release Assets
+        uses: softprops/action-gh-release@v1
+        with:
+          tag_name: ${{ github.event.inputs.version || github.ref_name }}
+          files: |
+            app/dist/*.exe
+            app/dist/*.dmg
+            app/dist/*.AppImage
+            app/dist/*.zip
+            app/dist/*.deb
+            app/dist/*.rpm
+          draft: false
+          prerelease: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}