# Child Session 02 Handoff

## Status

- Child session status: blocked by runtime fallback requirement.
- Child-session agent id: not visible in this runtime.
- Deprecated child-session id not reused: `019ef77d-552b-7343-abe4-88921b35d7ea`.
- Slide-agent id for `Agent S-21`: runtime fallback required.
- Resolved S-21 version: `s21-v2`.
- Image generation completed: no.
- Review suppressed: yes; no review file was written.

## Completed Slides

None generated.

Prepared only:

- `S-21` brief: `projects/2026-06-23-在路上/slides/s21/s21-v2-brief.md`
- `S-21` slide-agent packet: `projects/2026-06-23-在路上/tasks/2026-06-24-character-consistency/session-02/packets/s21-v2-slide-agent-packet.md`

## Files Written

- `projects/2026-06-23-在路上/tasks/2026-06-24-character-consistency/session-02/child-session-plan.md`
- `projects/2026-06-23-在路上/slides/s21/s21-v2-brief.md`
- `projects/2026-06-23-在路上/tasks/2026-06-24-character-consistency/session-02/packets/s21-v2-slide-agent-packet.md`
- `projects/2026-06-23-在路上/tasks/2026-06-24-character-consistency/session-02/child-session-handoff.md`

Not written:

- `projects/2026-06-23-在路上/slides/s21/s21-v2-prompt.md`
- `projects/2026-06-23-在路上/slides/s21/s21-v2-image.png`
- `projects/2026-06-23-在路上/slides/s21/s21-v2-review.md`
- `projects/2026-06-23-在路上/tasks/2026-06-24-character-consistency/session-02/returns/s21-v2-slide-agent-return.md`

## Version And Collision Check

- Existing S-21 scan: `s21-v1-image.png` only.
- Next unused version selected: `s21-v2`.
- Checked target paths before writing.
- No collision found for child-session plan, handoff, packet, brief, prompt, image, return, or review paths.

## Advisor / Reference Readiness

- `gpt-image-2` mode check result:

```json
{
  "mode": "B-or-C",
  "recommendation": "host-or-advisor",
  "garden_mode_enabled": false,
  "has_api_key": false,
  "base_url": "https://api.openai.com/v1",
  "model": "gpt-image-2",
  "env_flag_value": "(unset)"
}
```

- Garden/API expected: no.
- Prompt was not drafted because the separate slide agent could not be started.
- Packet requires `gpt-image-2` Advisor / host-native workflow.
- Packet requires style module `D | 夜路小火`.
- Packet requires primary character reference `visual-system/characters/character-anchor-v2-walk-side-reference-crop-tight.png`.
- Supporting reference `visual-system/characters/character-slice-walk-side-v2-from-anchor.png` exists and is listed as optional `Image 2`.

## Problems / Repairs Needed

runtime fallback required

The active child runtime does not expose a callable subagent / spawn capability for starting a separate single-slide `Agent S-21`. Per the binding workflow contract, this child session stopped instead of writing the prompt or generating a text-only identity-critical image.

## User Decisions Needed

- Main session may start `Agent S-21` as a fallback using packet:
  `projects/2026-06-23-在路上/tasks/2026-06-24-character-consistency/session-02/packets/s21-v2-slide-agent-packet.md`
- If the runtime used for fallback cannot load the actual reference image into visible generation context, it must block instead of generating.

## Next Session Input

Use the packet and brief above. The fallback slide agent must handle exactly `S-21`, write prompt/image/return only for `s21-v2`, and must not write a review file.