fix: resolve React errors and localStorage quota issues

- Fix DOMException in ChatInterface handleImageFiles function with proper file validation
- Add ErrorBoundary component to catch React errors gracefully
- Implement safeLocalStorage utility to handle QuotaExceededError
- Add intelligent quota management with automatic cleanup
- Limit chat history to 50 messages per project to prevent storage bloat
- Add comprehensive error handling for all localStorage operations
- Create comprehensive CLAUDE.md documentation

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "claude-code-ui",
-  "version": "1.2.0",
+  "version": "1.4.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "claude-code-ui",
-      "version": "1.2.0",
+      "version": "1.4.0",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/claude-code": "^1.0.24",