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)

app/package.json

@@ -64,7 +64,59 @@
     "files": [
       "electron/**/*",
       ".next/**/*",
-      "public/**/*"
-    ]
+      "public/**/*",
+      "!node_modules/**/*",
+      "node_modules/@anthropic-ai/**/*"
+    ],
+    "extraResources": [
+      {
+        "from": ".env",
+        "to": ".env",
+        "filter": ["**/*"]
+      }
+    ],
+    "mac": {
+      "category": "public.app-category.developer-tools",
+      "target": [
+        {
+          "target": "dmg",
+          "arch": ["x64", "arm64"]
+        },
+        {
+          "target": "zip",
+          "arch": ["x64", "arm64"]
+        }
+      ],
+      "icon": "public/icon.png"
+    },
+    "win": {
+      "target": [
+        {
+          "target": "nsis",
+          "arch": ["x64"]
+        }
+      ],
+      "icon": "public/icon.png"
+    },
+    "linux": {
+      "target": [
+        {
+          "target": "AppImage",
+          "arch": ["x64"]
+        },
+        {
+          "target": "deb",
+          "arch": ["x64"]
+        }
+      ],
+      "category": "Development",
+      "icon": "public/icon.png"
+    },
+    "nsis": {
+      "oneClick": false,
+      "allowToChangeInstallationDirectory": true,
+      "createDesktopShortcut": true,
+      "createStartMenuShortcut": true
+    }
   }
 }