Remove node_modules from git tracking and improve .gitignore

- Removed server/node_modules directory from git tracking
- Enhanced .gitignore with comprehensive node_modules patterns
- Added **/node_modules/ to catch node_modules in any subdirectory
- Reorganized .gitignore for better readability

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

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

.gitignore

@@ -7,16 +7,20 @@ yarn-error.log*
 pnpm-debug.log*
 lerna-debug.log*
 
+# Dependencies - Node modules in any directory
+node_modules/
+**/node_modules/
 client/node_modules
+server/node_modules
+
+# Environment files
 client/.env.example
 client/.env
+server/.env
 dist
 dist-ssr
 *.local
 
-server/node_modules
-server/.env
-
 # Editor directories and files
 .vscode/*
 !.vscode/extensions.json