feat(consultation): let the jyotish agent drive skills and tools

frontend/src/lib/chat-session-write-contract.ts

@@ -1,10 +1,12 @@
 import { z } from "zod";
+import { agentExecutionReceiptSchema, type AgentExecutionReceipt } from "./consultation-agent-events.ts";
 
 const chatMessageSchema = z.object({
   role: z.enum(["user", "assistant"]),
   text: z.string().max(100_000),
   suggestions: z.array(z.string().max(200)).max(3).optional(),
   techniqueTruth: z.string().max(120).optional(),
+  agentExecutionReceipt: agentExecutionReceiptSchema.optional(),
   workflowReceipt: z.object({
     route: z.string().max(120),
     status: z.string().max(120),
@@ -40,6 +42,7 @@ export type ChatSessionWrite = Readonly<{
     text: string;
     suggestions?: readonly string[];
     techniqueTruth?: string;
+    agentExecutionReceipt?: AgentExecutionReceipt;
     workflowReceipt?: Readonly<{
       route: string;
       status: string;