Fix remaining TypeScript 'Untyped function calls' errors

- Add DatabaseAdapter type imports where needed
- Properly type database adapter calls with type assertions
- Fix type mismatches in schemaMappingService
- Fix ensureInitialized calls on DatabaseAdapter

backend/src/services/dataIntegrityService.ts

@@ -8,6 +8,7 @@ import { logger } from './logger.js';
 import { normalizedCacheStore as cacheStore } from './normalizedCacheStore.js';
 import { jiraAssetsClient, JiraObjectNotFoundError } from './jiraAssetsClient.js';
 import type { CMDBObject } from '../generated/jira-types.js';
+import type { DatabaseAdapter } from './database/interface.js';
 
 export interface BrokenReference {
   object_id: string;
@@ -150,7 +151,8 @@ class DataIntegrityService {
     // 1. Check cache first
     const db = (cacheStore as any).db;
     if (db) {
-      const objRow = await db.queryOne<{
+      const typedDb = db as DatabaseAdapter;
+      const objRow = await typedDb.queryOne<{
         id: string;
         object_type_name: string;
       }>(`