Fix storage path issues and React error #130

Backend fixes:
- Add STORAGE_PATH environment variable support
- Fix absolute path references in all backend services
- Update Docker configuration with correct storage path

Frontend fixes:
- Remove individual ErrorBoundary wrappers to fix React error #130
- Remove unused ErrorBoundary import
- Simplify route structure to prevent component mounting issues

This resolves:
- 500 errors when creating events due to storage permission issues
- React error #130 that occurred during event creation
- Consistent storage path handling across all services

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

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

backend/src/routes/adminEvents.js

@@ -60,7 +60,8 @@ router.post('/', adminAuth, [
     expires_at.setDate(expires_at.getDate() + expiration_days);
     
     // Create folder structure
-    const eventPath = path.join(__dirname, '../../../storage/events/active', slug);
+    const storagePath = process.env.STORAGE_PATH || path.join(__dirname, '../../../storage');
+    const eventPath = path.join(storagePath, 'events/active', slug);
     await fs.mkdir(path.join(eventPath, 'collages'), { recursive: true });
     await fs.mkdir(path.join(eventPath, 'individual'), { recursive: true });