feat(agent-lookup): resolve by Ozonetel display name too

Inbound webhook rows store agentName as Ozonetel's display string
("Ganesh Bandi", "GlobalHealthX") which doesn't match either
ozonetelAgentId or platform Agent.name. Add ozonetelDisplayName as a
third index — populated on each platform Agent with the Full Name from
the Ozonetel admin UI.

After this + setting display names on Global + Ramaiah agents:
backfill matched 122/136 (~90%) on Global; remaining are calls handled
by agents that don't exist on this workspace.

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

src/platform/agent-lookup.service.ts

@@ -16,6 +16,7 @@ import { PlatformGraphqlService } from './platform-graphql.service';
 export class AgentLookupService implements OnModuleInit {
     private readonly logger = new Logger(AgentLookupService.name);
     private readonly uuidByOzonetelId = new Map<string, string>();
+    private readonly uuidByDisplayName = new Map<string, string>();
 
     constructor(private readonly platform: PlatformGraphqlService) {}
 
@@ -26,17 +27,21 @@ export class AgentLookupService implements OnModuleInit {
     async refresh(): Promise<void> {
         try {
             const data = await this.platform.query<any>(
-                `{ agents(first: 100) { edges { node { id ozonetelAgentId } } } }`,
+                `{ agents(first: 100) { edges { node { id ozonetelAgentId ozonetelDisplayName } } } }`,
             );
             const edges = data?.agents?.edges ?? [];
             this.uuidByOzonetelId.clear();
+            this.uuidByDisplayName.clear();
             for (const edge of edges) {
                 const n = edge.node;
                 if (n.ozonetelAgentId) {
                     this.uuidByOzonetelId.set(n.ozonetelAgentId.toLowerCase(), n.id);
                 }
+                if (n.ozonetelDisplayName) {
+                    this.uuidByDisplayName.set(n.ozonetelDisplayName.toLowerCase().trim(), n.id);
+                }
             }
-            this.logger.log(`[AGENT-LOOKUP] Loaded ${this.uuidByOzonetelId.size} agents`);
+            this.logger.log(`[AGENT-LOOKUP] Loaded ${this.uuidByOzonetelId.size} agents (${this.uuidByDisplayName.size} with display name)`);
         } catch (err) {
             this.logger.warn(`[AGENT-LOOKUP] Refresh failed: ${err}`);
         }
@@ -51,4 +56,15 @@ export class AgentLookupService implements OnModuleInit {
         await this.refresh();
         return this.uuidByOzonetelId.get(key) ?? null;
     }
+
+    // Resolve by Ozonetel display name (e.g. "Ganesh Bandi") — used by
+    // missed-call webhook backfill where only AgentName (display) is available.
+    async resolveByDisplayName(displayName: string | null | undefined): Promise<string | null> {
+        if (!displayName) return null;
+        const key = displayName.toLowerCase().trim();
+        const cached = this.uuidByDisplayName.get(key);
+        if (cached) return cached;
+        await this.refresh();
+        return this.uuidByDisplayName.get(key) ?? null;
+    }
 }