Aktualisiere .gitignore für verbesserte Ignorierung von Abhängigkeiten, Build-Ausgaben und Protokolldateien

.gitignore

@@ -1,10 +1,47 @@
+# Dependencies and local tools
 node_modules/
 .tools/
+
+# SPFx build output
 lib/
 dist/
 temp/
 release/
+solution/
 sharepoint/solution/
 *.sppkg
 *.tgz
+
+# Test output
+coverage/
+
+# Generated TypeScript files
+*.resx.ts
+*.scss.ts
+
+# Logs
+logs/
+*.log
 npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Local environment files
+.env
+.env.*
+!.env.example
+
+# Visual Studio and IDE files
+.vs/
+.idea/
+.ntvs_analysis.dat
+*.suo
+*.user
+bin/
+obj/
+
+# Operating system files
+.DS_Store
+Thumbs.db
+Desktop.ini
+