refactor: remove outdated test scripts and clean up package dependencies

- Deleted test scripts for auto-source and URL restrictions as they are no longer needed.
- Removed unused dependencies from package.json and package-lock.json to streamline the project.
- Updated the dev script to improve clarity in error messages regarding port conflicts.

Author: gildesmarais

bin/dev

@@ -23,7 +23,7 @@ trap cleanup SIGINT SIGTERM
 
 # Prevent silent failures from port conflicts
 if lsof -Pi :3000 -sTCP:LISTEN -t >/dev/null 2>&1; then
-  echo "❌ Port 3000 is already in use. Run: pkill -f 'puma.*html2rss-web'"
+  echo "❌ Port 3000 is already in use. Run: \`pkill -f 'puma.*html2rss-web'\`"
   exit 1
 fi
 

frontend/package-lock.json

@@ -14,8 +14,7 @@
     "test:ci": "npm run test:unit && npm run test:integration"
   },
   "dependencies": {
-    "astro": "^4.0.0",
-    "@astrojs/node": "^8.0.0"
+    "astro": "^4.0.0"
   },
   "devDependencies": {
     "prettier": "^3.x.x",