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/full/route.ts

@@ -0,0 +1,52 @@
+/**
+ * Full Sync API Endpoint
+ * POST /api/sync/full - Trigger a full sync of all entities
+ */
+
+import { NextRequest, NextResponse } from 'next/server';
+import { AutotaskClient } from '@/lib/services/autotask-client';
+import { createSyncService } from '@/lib/services/sync-service';
+
+export async function POST(request: NextRequest) {
+  try {
+    // Get triggered by from request body
+    const body = await request.json().catch(() => ({}));
+    const triggeredBy = body.triggeredBy || 'api';
+    const yearsBack = body.yearsBack;
+
+    // Initialize Autotask client
+    const autotaskClient = new AutotaskClient({
+      apiUrl: process.env.AUTOTASK_API_URL || '',
+      username: process.env.AUTOTASK_USERNAME || '',
+      password: process.env.AUTOTASK_SECRET || '',
+      apiIntegrationCode: process.env.AUTOTASK_API_INTEGRATION_CODE || '',
+    });
+
+    // Create sync service
+    const syncService = createSyncService(autotaskClient);
+
+    // Check if sync is already in progress
+    if (syncService.isSyncInProgress()) {
+      return NextResponse.json(
+        { error: 'A sync operation is already in progress' },
+        { status: 409 }
+      );
+    }
+
+    // Start full sync (non-blocking)
+    syncService.fullSync(triggeredBy, yearsBack).catch((error) => {
+      console.error('Full sync failed:', error);
+    });
+
+    return NextResponse.json({
+      message: 'Full sync started',
+      syncId: syncService.getCurrentSyncId(),
+    });
+  } catch (error) {
+    console.error('Failed to start full sync:', error);
+    return NextResponse.json(
+      { error: 'Failed to start full sync' },
+      { status: 500 }
+    );
+  }
+}