fix(pty): close retained lifecycle review gaps

packages/tasks/tool-tasks/src/index.ts

@@ -171,10 +171,10 @@ export function apply(ctx: Context, config: Config): void {
     },
     execute(args, exec) {
       const id = validateTaskId(args.task_id)
+      const snapshot = ctx.tasks.get(id, exec.agent)
       const result = ctx.tasks.kill(id, exec.agent, args.reason)
       if (result === 'already-finished') {
         // A snapshot describes terminal state without consuming pending output.
-        const snapshot = ctx.tasks.get(id, exec.agent)
         return Promise.resolve([{
           type: 'text',
           text: fitWithSuffix(
@@ -185,7 +185,15 @@ export function apply(ctx: Context, config: Config): void {
           ),
         }])
       }
-      return Promise.resolve([{ type: 'text', text: `requested cancellation of task ${id}` }])
+      return Promise.resolve([{
+        type: 'text',
+        text: fitWithSuffix(
+          `requested cancellation of task ${id}`,
+          '',
+          snapshot.outputLimitBytes,
+          '\n[notice truncated]',
+        ),
+      }])
     },
     presentCall: args => presentTaskCall(`Kill background task ${args.task_id}`, 'execute', args.task_id),
   }))

packages/tasks/tool-tasks/tests/tool-tasks.spec.ts

@@ -213,6 +213,16 @@ describe('task_kill', () => {
     expect(p.cancels).toEqual(['superseded'])
   })
 
+  it('applies the producer output limit to a cancellation acknowledgement', async () => {
+    const { ctx } = await setup()
+    const p = producer({ outputLimitBytes: 8 })
+    ctx.tasks.start(p.spec)
+
+    const result = await call(ctx, 'task_kill', { task_id: 'bash-1' })
+    expect(Buffer.byteLength(text(result))).toBeLessThanOrEqual(8)
+    expect(p.cancels).toEqual([undefined])
+  })
+
   it('reports an already-finished task without consuming its pending delta', async () => {
     const { ctx } = await setup()
     let delta = 'unread tail'