require client-key for uploads

TASK.md

@@ -7,6 +7,7 @@
 - [x] Implement download tracking and limits
 - [x] Add file expiry system
 - [x] Create modern UI with error handling
+- [x] Add API authentication for uploads
 
 ## 🎯 Core Features Implemented
 
@@ -24,6 +25,7 @@
 - [x] Metadata tracking
 - [x] Configurable limits
 - [x] API response format
+- [x] API key authentication
 
 ### Download System
 - [x] Code validation
@@ -47,6 +49,9 @@
 - [ ] Implement file type restrictions
 - [ ] Add optional password protection
 - [ ] CSRF protection
+- [ ] Add key rotation support
+- [ ] Implement IP whitelisting
+- [ ] Add audit logging
 
 ### Features
 - [ ] Multi-file upload support
@@ -61,6 +66,7 @@
 - [ ] Implement persistent storage
 - [ ] Add monitoring/metrics
 - [ ] Create backup system
+- [ ] Add health check endpoints
 
 ### UI/UX
 - [ ] Dark mode support