Fix TypeScript compilation errors in backend

- Fix query parameter type issues (string | string[] to string) in controllers
- Add public getDatabaseAdapter() method to SchemaRepository for db access
- Fix SchemaSyncService export and import issues
- Fix referenceObject vs referenceObjectType property name
- Add missing jiraAssetsClient import in normalizedCacheStore
- Fix duplicate properties in object literals
- Add type annotations for implicit any types
- Fix type predicate issues with generics
- Fix method calls (getEnabledObjectTypes, syncAllSchemas)
- Fix type mismatches (ObjectTypeRecord vs expected types)
- Fix Buffer type issue in biaMatchingService
- Export SchemaSyncService class for ServiceFactory

backend/src/routes/schemaConfiguration.ts

@@ -43,7 +43,6 @@ router.post('/discover', async (req: Request, res: Response) => {
     if (result.schemasProcessed === 0) {
       logger.warn('Schema configuration: Sync returned 0 schemas - this might indicate an API issue');
       res.status(400).json({
-        success: false,
         message: 'No schemas found. Please check: 1) JIRA_SERVICE_ACCOUNT_TOKEN is configured correctly, 2) Jira Assets API is accessible, 3) API endpoint /rest/assets/1.0/objectschema/list is available',
         ...result,
       });
@@ -51,7 +50,6 @@ router.post('/discover', async (req: Request, res: Response) => {
     }
     
     res.json({
-      success: result.success,
       message: 'Schema synchronization completed successfully',
       schemasDiscovered: result.schemasProcessed,
       objectTypesDiscovered: result.objectTypesProcessed,
@@ -88,7 +86,11 @@ router.get('/object-types', async (req: Request, res: Response) => {
  */
 router.patch('/object-types/:id/enabled', async (req: Request, res: Response) => {
   try {
-    const id = req.params.id;
+    const id = Array.isArray(req.params.id) ? req.params.id[0] : req.params.id;
+    if (!id) {
+      res.status(400).json({ error: 'id parameter required' });
+      return;
+    }
     const { enabled } = req.body;
 
     if (typeof enabled !== 'boolean') {
@@ -187,7 +189,12 @@ router.patch('/schemas/:schemaId/search-enabled', async (req: Request, res: Resp
       return;
     }
 
-    await schemaConfigurationService.setSchemaSearchEnabled(schemaId, searchEnabled);
+    const schemaIdStr = Array.isArray(schemaId) ? schemaId[0] : schemaId;
+    if (!schemaIdStr) {
+      res.status(400).json({ error: 'schemaId parameter required' });
+      return;
+    }
+    await schemaConfigurationService.setSchemaSearchEnabled(schemaIdStr, searchEnabled);
 
     res.json({
       status: 'success',