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

.gitignore

@@ -1,32 +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
+logs/
 *.log
 npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
 
-# Dependency directories
-node_modules
+# Local environment files
+.env
+.env.*
+!.env.example
 
-# Build generated files
-dist
-lib
-solution
-temp
-*.sppkg
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# OSX
-.DS_Store
-
-# Visual Studio files
+# Visual Studio and IDE files
+.vs/
+.idea/
 .ntvs_analysis.dat
-.vs
-bin
-obj
+*.suo
+*.user
+bin/
+obj/
 
-# Resx Generated Code
-*.resx.ts
+# Operating system files
+.DS_Store
+Thumbs.db
+Desktop.ini
 
-# Styles Generated Code
-*.scss.ts