docs: Update .gitignore for documentation repository

.gitignore

@@ -1,2 +1,37 @@
 # Claude development files
-CLAUDE.md
+CLAUDE.md
+
+# Operating System
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+desktop.ini
+$RECYCLE_BIN/
+
+# IDE and Editor
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Temporary files
+*.tmp
+*.temp
+*.log
+*.bak
+*.backup
+*.orig
+
+# Draft files
+*-draft.md
+*-temp.md
+*-backup.md
+
+# Local environment files
+.env
+.env.local