Refactor hooks and contexts for improved state management and modularity

- Updated `useActiveDeals` hook to include reset functionality for API calls.
- Enhanced `useApi` hook to provide a reset method for clearing state.
- Refactored `useAuth`, `useFlyers`, `useMasterItems`, `useModal`, and `useUserData` hooks to utilize context providers for better state management.
- Created new context files: `AuthContext`, `FlyersContext`, `MasterItemsContext`, `ModalContext`, and `UserDataContext` to encapsulate related state and logic.
- Updated tests for hooks to accommodate changes in context structure and reset functionality.
- Adjusted imports in `index.tsx` to reflect new context structure.

src/services/db/user.db.test.ts

@@ -1,5 +1,5 @@
 // src/services/db/user.db.test.ts
-import { describe, it, expect, vi, beforeEach, afterEach, type Mock } from 'vitest';
+import { describe, it, expect, vi, beforeEach, afterEach, Mock } from 'vitest';
 import { PoolClient } from 'pg';
 
 // Mock the logger to prevent stderr noise during tests
@@ -458,10 +458,11 @@ describe('User DB Service', () => {
 
   describe('exportUserData', () => {
     // Import the mocked withTransaction helper
-    let withTransaction: any;
+    let withTransaction: Mock;
     beforeEach(async () => {
       const connDb = await import('./connection.db');
-      withTransaction = connDb.withTransaction;
+      // Cast to Mock for type-safe access to mock properties
+      withTransaction = connDb.withTransaction as Mock;
     });
 
     it('should call profile, watched items, and shopping list functions', async () => {