chore: improve .gitignore and add shared vscode settings (#57)

- Better organized with clear sections
- Added SQLite WAL/SHM files
- Added OS files (Thumbs.db, swap files)
- Added misc caches (.cache/, .turbo/)
- Keep .vscode/settings.json for shared vitest config
- Added root data/ folder (docker-compose mount point)

.gitignore

@@ -1,33 +1,74 @@
-# Node
+# ===================
+# Dependencies
+# ===================
 node_modules/
+.pnpm-store/
+
+# ===================
+# Build outputs
+# ===================
+dist/
+build/
+.tmp/
+*.tsbuildinfo
+
+# ===================
+# Test & Coverage
+# ===================
+coverage/
+.nyc_output/
+
+# ===================
+# Environment
+# ===================
+.env
+.env.*
+!.env.example
+
+# ===================
+# Database & Data
+# ===================
+*.db
+*.sqlite
+*.sqlite3
+*.db-journal
+*.db-wal
+*.db-shm
+backend/data/
+data/
+
+# ===================
+# Logs
+# ===================
+logs/
+*.log
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 pnpm-debug.log*
 
-# Build outputs
-dist/
-build/
-coverage/
-.tmp/
-
-# Env
-.env
-.env.*
-!.env.example
-
-# SQLite
-*.db
-*.sqlite
-*.sqlite3
-*.db-journal
-backend/data/
-
-# Logs
-logs/
-*.log
-
-# Editor
-.vscode/
-.idea/
+# ===================
+# OS files
+# ===================
 .DS_Store
+Thumbs.db
+*.swp
+*.swo
+*~
+
+# ===================
+# IDE / Editor
+# ===================
+.idea/
+*.sublime-project
+*.sublime-workspace
+
+# Keep shared VS Code settings
+# .vscode/ is NOT ignored - settings.json is useful for the team
+
+# ===================
+# Misc
+# ===================
+*.local
+.cache/
+.turbo/