feat: add master password hint functionality

- Updated user model to include masterPasswordHint.
- Modified sync handler to return masterPasswordHint.
- Implemented password hint retrieval in public API.
- Enhanced user profile management to allow updating of password hint.
- Added UI components for displaying and editing password hint.
- Updated localization files for new password hint strings.
- Improved rate limiting for sensitive public requests.
- Adjusted database schema to accommodate master password hint.

src/services/ratelimit.ts

@@ -184,6 +184,14 @@ export class RateLimitService {
   ): Promise<{ allowed: boolean; remaining: number; retryAfterSeconds?: number }> {
     return this.consumeFixedWindowBudget(identifier, maxRequests, CONFIG.API_WINDOW_SECONDS);
   }
+
+  async consumeBudgetWithWindow(
+    identifier: string,
+    maxRequests: number,
+    windowSeconds: number
+  ): Promise<{ allowed: boolean; remaining: number; retryAfterSeconds?: number }> {
+    return this.consumeFixedWindowBudget(identifier, maxRequests, windowSeconds);
+  }
 }
 
 function parseIpv4Octets(input: string): number[] | null {