chore: track caller resolution module

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

src/caller/caller-resolution.controller.ts

@@ -0,0 +1,26 @@
+import { Controller, Post, Body, Headers, HttpException, HttpStatus, Logger } from '@nestjs/common';
+import { CallerResolutionService } from './caller-resolution.service';
+
+@Controller('api/caller')
+export class CallerResolutionController {
+    private readonly logger = new Logger(CallerResolutionController.name);
+
+    constructor(private readonly resolution: CallerResolutionService) {}
+
+    @Post('resolve')
+    async resolve(
+        @Body('phone') phone: string,
+        @Headers('authorization') auth: string,
+    ) {
+        if (!phone) {
+            throw new HttpException('phone is required', HttpStatus.BAD_REQUEST);
+        }
+        if (!auth) {
+            throw new HttpException('Authorization header required', HttpStatus.UNAUTHORIZED);
+        }
+
+        this.logger.log(`[RESOLVE] Resolving caller: ${phone}`);
+        const result = await this.resolution.resolve(phone, auth);
+        return result;
+    }
+}