📝 Update .gitignore with comprehensive exclusions

- Add all Node.js standard exclusions
- Exclude user config directories (.neuraterm/) containing API keys
- Add OS-specific files (Windows, macOS, Linux)
- Add IDE files (.vscode, .idea, etc.)
- Add build artifacts and cache files
- Add environment files and secrets
- Comprehensive coverage for a professional project

.gitignore

@@ -1,5 +1,60 @@
+# Dossier d'exemple (ne pas committer)
 .divers
+
+# Dépendances
 node_modules/
+package-lock.json
+
+# Build
 dist/
+*.tsbuildinfo
+
+# Logs
 *.log
+logs/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime et cache
+.npm
+.yarn-integrity
+.cache/
+
+# Variables d'environnement et secrets
 .env
+.env.local
+.env.production
+.env.test
+
+# Configuration utilisateur (contient des clés API)
+config/
+.neuraterm/
+
+# OS
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+desktop.ini
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Tests
+coverage/
+.nyc_output
+junit.xml
+
+# Temporaire
+tmp/
+temp/
+*.tmp
+*.temp