feat(councils): add preflight, schema-driven outputs, and artifact reporting

src/backends/native/orchestrator.ts

@@ -1,5 +1,5 @@
 import type { ModelRouter, ModelTier } from '../../models/router.js';
-import type { ChatRequest, Message, ModelClient, TokenUsage } from '../../models/types.js';
+import type { ChatRequest, ChatResponseFormat, Message, ModelClient, TokenUsage } from '../../models/types.js';
 import type { Session } from '../../session/index.js';
 import type { ToolRegistry } from '../../tools/registry.js';
 import type { ToolExecutor } from '../../tools/executor.js';
@@ -28,6 +28,8 @@ export interface SubAgentRequest {
   maxTokens?: number;
   /** When true, include tools from the toolRegistry in the request. */
   tools?: boolean;
+  /** Optional provider-level response format request (e.g., JSON schema). */
+  responseFormat?: ChatResponseFormat;
 }
 
 /** Result returned from a sub-agent delegation call. */
@@ -279,6 +281,7 @@ export class AgentOrchestrator {
       messages,
       system: request.systemPrompt,
       maxTokens: request.maxTokens,
+      responseFormat: request.responseFormat,
     };
 
     // Optionally include tools from the registry (filtered by policy)