fix: pre-populate classifications instead of syncing from Autotask API

- Autotask REST API doesn't expose ClassificationIcons endpoint
- Created migration to populate 17 standard classification icons
- Removed sync button from UI (classifications are pre-loaded)
- Includes: Tools Only, Co-Managed, Wulf 365 Essentials, Partner, etc.
- Users can now select any classification to exclude from kiosk

lib/services/autotask-client.ts

@@ -490,7 +490,8 @@ export class AutotaskClient {
   // Classification Icons methods
   async getClassificationIcons(): Promise<any[]> {
     // Autotask API endpoint for classification icons
-    const url = `${this.config.apiUrl}/CompanyClassificationIcons`;
+    // Try ClassificationIcons endpoint
+    const url = `${this.config.apiUrl}/ClassificationIcons`;
     
     const response = await this.makeApiCall<any>(url, {
       method: 'GET',