feat: caller cache invalidation endpoint + worklist auth fix

- POST /api/caller/invalidate — clears Redis cache for a phone number
- WorklistController: resolves agent name from login cache (avoids currentUser query)
- AuthController: caches agent name in Redis during login (keyed by token suffix)
- WorklistModule: imports AuthModule (forwardRef for circular dep)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/caller/caller-resolution.controller.ts

@@ -23,4 +23,14 @@ export class CallerResolutionController {
         const result = await this.resolution.resolve(phone, auth);
         return result;
     }
+
+    @Post('invalidate')
+    async invalidate(@Body('phone') phone: string) {
+        if (!phone) {
+            throw new HttpException('phone is required', HttpStatus.BAD_REQUEST);
+        }
+        this.logger.log(`[RESOLVE] Invalidating cache for: ${phone}`);
+        await this.resolution.invalidate(phone);
+        return { status: 'ok' };
+    }
 }