feat: call control, recording, CDR, missed calls, live call assist

- Call Control API (CONFERENCE/HOLD/MUTE/KICK_CALL)
- Recording pause/unpause
- Fetch CDR Detailed (call history with recordings)
- Abandon Calls (missed calls from Ozonetel)
- Call Assist WebSocket gateway (Deepgram STT + OpenAI suggestions)
- Call Assist service (lead context loading)

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

src/ozonetel/ozonetel-agent.controller.ts

@@ -1,4 +1,4 @@
-import { Controller, Post, Body, Logger, HttpException } from '@nestjs/common';
+import { Controller, Post, Get, Body, Query, Logger, HttpException } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import { OzonetelAgentService } from './ozonetel-agent.service';
 
@@ -136,6 +136,72 @@ export class OzonetelAgentController {
         }
     }
 
+    @Post('call-control')
+    async callControl(
+        @Body() body: {
+            action: 'CONFERENCE' | 'HOLD' | 'UNHOLD' | 'MUTE' | 'UNMUTE' | 'KICK_CALL';
+            ucid: string;
+            conferenceNumber?: string;
+        },
+    ) {
+        if (!body.action || !body.ucid) {
+            throw new HttpException('action and ucid required', 400);
+        }
+        if (body.action === 'CONFERENCE' && !body.conferenceNumber) {
+            throw new HttpException('conferenceNumber required for CONFERENCE action', 400);
+        }
+
+        this.logger.log(`Call control: ${body.action} ucid=${body.ucid}`);
+
+        try {
+            const result = await this.ozonetelAgent.callControl(body);
+            return result;
+        } catch (error: any) {
+            const message = error.response?.data?.message ?? error.message ?? 'Call control failed';
+            throw new HttpException(message, error.response?.status ?? 502);
+        }
+    }
+
+    @Post('recording')
+    async recording(
+        @Body() body: { ucid: string; action: 'pause' | 'unPause' },
+    ) {
+        if (!body.ucid || !body.action) {
+            throw new HttpException('ucid and action required', 400);
+        }
+
+        try {
+            const result = await this.ozonetelAgent.pauseRecording(body);
+            return result;
+        } catch (error: any) {
+            const message = error.response?.data?.message ?? error.message ?? 'Recording control failed';
+            throw new HttpException(message, error.response?.status ?? 502);
+        }
+    }
+
+    @Get('missed-calls')
+    async missedCalls() {
+        const result = await this.ozonetelAgent.getAbandonCalls();
+        return result;
+    }
+
+    @Get('call-history')
+    async callHistory(
+        @Query('date') date?: string,
+        @Query('status') status?: string,
+        @Query('callType') callType?: string,
+    ) {
+        const targetDate = date ?? new Date().toISOString().split('T')[0];
+        this.logger.log(`Call history: date=${targetDate} status=${status ?? 'all'} type=${callType ?? 'all'}`);
+
+        const result = await this.ozonetelAgent.fetchCDR({
+            date: targetDate,
+            status,
+            callType,
+        });
+        return result;
+    }
+
     private mapToOzonetelDisposition(disposition: string): string {
         // Campaign only has 'General Enquiry' configured currently
         const map: Record<string, string> = {