chore: upgrade Prisma 7, LangChain 1.x, Tailwind 4.2, Vue 3.5.29 and other deps

- Prisma 6 → 7: new prisma-client generator, prisma.config.ts, PrismaPg adapter, updated all imports
- LangChain 0.x → 1.x: @langchain/core, langgraph, openai
- Tailwind 4.1 → 4.2.1, daisyUI 5.5.19, Vue 3.5.29, ai 6.0.99, zod 4.3.6
- Fix MessageDirection bug in crm-updates.ts (OUTBOUND → OUT)
- Add server/generated to .gitignore

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/server/routes/ws/crm-updates.ts

@@ -203,7 +203,7 @@ async function pollAndBroadcast() {
         contactName: msg.contact.name,
         text: msg.content ?? "",
         channel: mapChannel(msg.channel),
-        direction: msg.direction === "OUTBOUND" ? "out" : "in",
+        direction: msg.direction === "OUT" ? "out" : "in",
         at: msg.occurredAt?.toISOString() ?? msg.createdAt.toISOString(),
       };
       for (const peer of peers) {