Add comprehensive admin features and multi-system integration

- Add admin dashboard with sync controls and data browser
- Implement RMM, Auvik, and Addigy organization mappings
- Add chunked ticket sync with progress tracking
- Implement entity sync service with rate limiting
- Add analytics engine and performance optimizer
- Create data browser for all PSA entities
- Add navigation components and UI improvements
- Implement background processing and sync services
- Add comprehensive documentation and migration scripts
- Update configuration items with multi-system support
- Enhance contact management and purchase history
- Add issue type assignment and LLM analyzer
- Improve error handling and logging utilities

app/api/sync/progress/route.ts

@@ -0,0 +1,49 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { syncProgressTracker } from '@/lib/services/sync-progress-tracker';
+
+/**
+ * GET /api/sync/progress
+ * Get sync progress for a specific sync or entity type
+ */
+export async function GET(request: NextRequest) {
+  try {
+    const searchParams = request.nextUrl.searchParams;
+    const syncId = searchParams.get('syncId');
+    const entityType = searchParams.get('entityType');
+
+    if (syncId) {
+      // Get specific sync progress
+      const progress = syncProgressTracker.getProgress(syncId);
+      if (!progress) {
+        return NextResponse.json(
+          { error: 'Sync not found' },
+          { status: 404 }
+        );
+      }
+      return NextResponse.json({ progress });
+    }
+
+    if (entityType) {
+      // Get latest sync for entity type
+      const progress = syncProgressTracker.getLatestSync(entityType);
+      if (!progress) {
+        return NextResponse.json(
+          { error: 'No sync found for entity type' },
+          { status: 404 }
+        );
+      }
+      return NextResponse.json({ progress });
+    }
+
+    // Get all active syncs
+    const activeSyncs = syncProgressTracker.getActiveSyncs();
+    return NextResponse.json({ activeSyncs });
+
+  } catch (error) {
+    console.error('Error fetching sync progress:', error);
+    return NextResponse.json(
+      { error: 'Failed to fetch sync progress' },
+      { status: 500 }
+    );
+  }
+}