[Bugs] sub agent spawning doesn't seem to work - it gets created and then sits idly

**Mood:** 😔
**Category:** Bugs

sub agent spawning doesn't seem to work - it gets created and then sits idly

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| Field | Value |
| --- | --- |
| App version | 1.0.5 |
| OS | Windows 10.0.26100 |
| Theme | Fox |
| Path | /chat |
| Tenure | Day 5 (Week 1) |

Reproduce the report with app version 1.0.5 on Windows 10.0.26100 from the /chat path, then inspect the sub-agent spawning flow and any available logs. Done means a spawned sub-agent becomes active instead of remaining idle; record the reproduction result and relevant failure evidence.

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