feat: queues have default team, tickets inherit it

- team_id on queues table (optional, can be overridden per-ticket)
- Ticket creation auto-sets team_id from the queue's default
- Queue admin form has team selector (scrip flow node 03)
- Queue API (POST/PATCH) accepts team_id

No enforcement — just a helpful default. Teams and queues
are loosely coupled, not hierarchically locked.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/routes/tickets.ts

@@ -183,6 +183,7 @@ export function createTicketsRouter(db: Db): Hono {
       queue_id: parsed.queue_id,
       status: initialStatus,
       creator_id: creatorId,
+      team_id: (queue as any).team_id ?? null,
     }).returning();
 
     if (!ticket) {