fix: apply parentTools in all parent session notification paths

Both parent-session-notifier.ts and notify-parent-session.ts now include
parentTools in the promptAsync body, ensuring tool restrictions are
consistently applied across all notification code paths.

src/features/background-agent/notify-parent-session.ts

@@ -148,6 +148,7 @@ export async function notifyParentSession(args: {
         noReply: !allComplete,
         ...(agent !== undefined ? { agent } : {}),
         ...(model !== undefined ? { model } : {}),
+        ...(task.parentTools ? { tools: task.parentTools } : {}),
         parts: [{ type: "text", text: notification }],
       },
     })

src/features/background-agent/parent-session-notifier.ts

@@ -71,6 +71,7 @@ export async function notifyParentSession(
         noReply: !allComplete,
         ...(agent !== undefined ? { agent } : {}),
         ...(model !== undefined ? { model } : {}),
+        ...(task.parentTools ? { tools: task.parentTools } : {}),
         parts: [{ type: "text", text: notification }],
       },
     })