feat(orchestrator): MS23-P1-003 AgentProviderRegistry (#720)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/orchestrator/src/api/agents/agents.module.ts

@@ -11,6 +11,7 @@ import { AgentMessagesService } from "./agent-messages.service";
 import { AgentControlService } from "./agent-control.service";
 import { AgentTreeService } from "./agent-tree.service";
 import { InternalAgentProvider } from "./internal-agent.provider";
+import { AgentProviderRegistry } from "./agent-provider.registry";
 
 @Module({
   imports: [QueueModule, SpawnerModule, KillswitchModule, ValkeyModule, PrismaModule],
@@ -22,7 +23,8 @@ import { InternalAgentProvider } from "./internal-agent.provider";
     AgentControlService,
     AgentTreeService,
     InternalAgentProvider,
+    AgentProviderRegistry,
   ],
-  exports: [InternalAgentProvider],
+  exports: [InternalAgentProvider, AgentProviderRegistry],
 })
 export class AgentsModule {}