Add session permission support to background agents for denying questions

Implements question-denied session permission rules when creating child
sessions via background task delegation. This prevents subagents from
asking questions by passing explicit permission configuration during
session creation.

🤖 GENERATED WITH ASSISTANCE OF OhMyOpenCode

src/tools/delegate-task/sync-session-creator.ts

@@ -1,4 +1,5 @@
 import type { OpencodeClient } from "./types"
+import { QUESTION_DENIED_SESSION_PERMISSION } from "../../shared/question-denied-session-permission"
 
 export async function createSyncSession(
   client: OpencodeClient,
@@ -13,6 +14,7 @@ export async function createSyncSession(
     body: {
       parentID: input.parentSessionID,
       title: `${input.description} (@${input.agentToUse} subagent)`,
+      permission: QUESTION_DENIED_SESSION_PERMISSION,
     } as Record<string, unknown>,
     query: {
       directory: parentDirectory,