Refine CRM chat UX and add DB-backed pin toggle

Frontend/server/agent/langgraphCrmAgent.ts

@@ -7,6 +7,7 @@ import { ChatOpenAI } from "@langchain/openai";
 import { tool } from "@langchain/core/tools";
 import { z } from "zod";
 import { getLangfuseClient } from "../utils/langfuse";
+import { Prisma } from "@prisma/client";
 
 function iso(d: Date) {
   return d.toISOString();
@@ -570,7 +571,7 @@ export async function runLangGraphCrmAgentFor(input: {
               channel: toChannel(change.channel),
               content: change.text,
               durationSec: change.durationSec,
-              transcriptJson: Array.isArray(change.transcript) ? change.transcript : null,
+              transcriptJson: Array.isArray(change.transcript) ? change.transcript : Prisma.JsonNull,
               occurredAt: new Date(change.at),
             },
           });
@@ -598,7 +599,8 @@ export async function runLangGraphCrmAgentFor(input: {
   };
 
   const crmTool = tool(
-    async (raw: z.infer<typeof CrmToolSchema>) => {
+    async (rawInput: unknown) => {
+      const raw = CrmToolSchema.parse(rawInput);
       const toolName = `crm:${raw.action}`;
       const startedAt = new Date().toISOString();
       toolsUsed.push(toolName);