Fix Linux AppImage runtime issues

- Move get-port from devDependencies to dependencies (required at runtime)
- Disable sandbox in Electron BrowserWindow for Linux compatibility
- Fixes 'Cannot find module get-port' error in packaged AppImage
- Fixes SUID sandbox errors on Linux systems

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: michael-borck

main.js

@@ -84,7 +84,8 @@ async function createWindow() {
       nodeIntegration: false,
       contextIsolation: true,
       webSecurity: false, // Disable for development
-      partition: 'persist:study-buddy' // Use persistent session
+      partition: 'persist:study-buddy', // Use persistent session
+      sandbox: false // Disable sandbox for Linux compatibility
     },
     titleBarStyle: 'default',
     show: true // Show immediately for debugging

package-lock.json

@@ -23,6 +23,7 @@
     "@headlessui/react": "^2.1.2",
     "@mozilla/readability": "^0.5.0",
     "eventsource-parser": "^1.1.2",
+    "get-port": "^6.1.2",
     "jsdom": "^24.1.0",
     "llama3-tokenizer-js": "^1.1.3",
     "next": "14.2.3",
@@ -47,7 +48,6 @@
     "electron-builder": "^26.0.12",
     "eslint": "^8",
     "eslint-config-next": "14.2.3",
-    "get-port": "^6.1.2",
     "postcss": "^8",
     "prettier": "^3.2.5",
     "prettier-plugin-tailwindcss": "^0.6.0",