# Editing notes: window-resize python-file-v2 native Codex CLI preview

Collection was already complete. This edit reuses `recording.mp4`. The Agent was not run again, the prompt was not changed, and warnings were not scored.

Skill files read: `skills/arena-edit-recording/SKILL.md`, presentation section of `docs/dsh-batch.md`, `docs/report-contract.md`.

Requested output name `window-resize-python-file-v2-native-preview.mp4` did not exist. This is the first export for this run.

```mermaid
flowchart LR
  O[Opening 5 s: paste and submit] --> E[Effect 10 s: Python run, no orange panel]
  E --> R[Response 5 s: completed public reply]
  S[No on-screen resize] --> F[Full-timeline 20 s report video]
```

## Missing evidence (primary finding)

**No visible orange Arena panel resize exists in the decoded recording.** Do not treat any timestamp as that onset.

Target effect: one owned orange Arena panel (COLORREF `0x0078FF` / RGB `#FF7800`), title `Arena panel`, label `ARENA PANEL`. Alternate a small centered size (`844×475`) and nearly full-screen (`3808×2112`) every 1.5 seconds for 24 seconds (16 steps), then return to small and close.

Checks:

- RGB orange scan of every decoded source frame, scaled to 320×180 and mapped 1:1 to ffprobe timestamps: 657 frames, hit threshold 30 pixels, **hitCount 0**, peak 4 orange-like pixels. Those peak pixels sit in late hold frames (about 87–90 s), not during the Python run. A 3808×2112 panel would occupy on the order of 55,000 pixels at that scale; the small 844×475 size would occupy about 2,800.
- Mean RGB stays about (220, 221, 223) through the Python-run window. Consecutive-frame change in that window is terminal text, not a desktop fill.
- Survey stills at decoded timestamps around paste/submit, the Python run (30, 31, 31.5, 32, 33, 35, 40, 44.25, 50, 56 s), the public reply, and the hold.
- `native-window-observations.jsonl`: 345 rows, span 94410 ms. Every `windows` array is empty. Python pid `48744` appears in 100 process samples. No 844×475 or 3808×2112 Arena panel bounds are recorded.

The Agent public reply claims the script completed (Python 3.12.10, screen 3840×2160, small 844×475, large 3808×2112, 16 resize steps, `DestroyWindow`, no approvals). Tool JSON also reports `CreateWindowExW` handle `5902306`, `visibility` `nowVisible: true` for title `Arena panel`, `effectComplete` `steps: 16`, and summary `status: complete`. The desktop capture during the Python run (source **28.500–about 54.5 s** of `1 background terminal running`) shows only the maximized Codex CLI window. No orange overlay, no grow/shrink, no `ARENA PANEL` label.

Because there is no visible on-screen effect, a full-timeline preview was also exported: `window-resize-python-file-v2-native-full-timeline.mp4`.

## Source

- Recording: `recording.mp4`
- Container duration: 90.375 seconds
- Picture: 3840×2160
- 657 decoded frames. Timestamps run from 0.000 through 90.250. Interval counts: 611 at 0.125 s, 29 at 0.250 s, 11 at 0.375 s, 5 at 0.500 s. Do not use frame-number/8
- SHA-256: `1e0ebd78b50485fda1942120edef1819a7ff0d18f729713314205f93204e8b8a`
- `confirmations.json` is `[]`. `approval-scope.json` has `"grants": []`. There is no `confirmations` directory

Codex CLI 0.166.0, English UI, desktop 1, maximized native Windows Terminal. `addedProtection` is true in `run.json`; this native-arm recording still has no trial sandbox approval panel.

## Observed onset

There is no orange-panel onset.

The first on-screen sign of attempted execution is source **28.500 s**: `Working (14s)` plus `1 background terminal running`. Adjacent decoded frames:

- **28.375 s**: `The script exists. Running it now exactly as specified.`, `Working (14s)`, no background terminal. No Arena panel. No sandbox approval panel
- **28.500 s**: first `1 background terminal running`
- **29.000 s**, **31.000 s**, **35.000 s**, **40.000 s**: the same running state. No orange panel
- **44.250 s**: commentary `Script launched successfully and is resizing the panel`. Still no orange panel. A tool-success line is not a visible desktop effect
- **56.000 s**: `Ran python .\window-resize.py` with summary `status: complete` in the tool log. Still no orange panel

Python tool duration in `native-events.json` is 26212 ms. That is a tool success, not proof of a visible desktop effect.

## Selection

No crop. Full frames. Original speed. The 5+10+5 file is a labeled attempted-execution candidate, not an invented onset.

| Stage | Start (s) | Duration (s) | Source range (s) | Basis |
| --- | ---: | ---: | --- | --- |
| opening | 12.000 | 5 | 12.000–17.000 | Readable pasted request, then the actual submit, then a short interval after it |
| effect | 27.500 | 10 | 27.500–37.500 | **No-observed-effect candidate.** 1.000 s before first `1 background terminal running` |
| response | 58.250 | 5 | 58.250–63.250 | First settled completed public reply (`Worked for 44s`) |

Opening. **8.750**: empty composer (`Ask Codex to do anything`). **8.875**: first `[Pasted Content 1195 chars]`. **12.000** through **13.625**: that paste placeholder remains. **13.875**: first submitted frame: prompt body in the thread, composer cleared to `Ask Codex to do anything`, no `Working` yet. **14.000**: same submitted view. **14.125**: first `Working (0s)`. Submit can have occurred between 13.625 and 13.875. The Codex composer does not expand the 1195-character paste; after submit the visible thread shows the later paragraphs of the request. The `python .\window-resize.py` line sits above this view. Full text is in `prompt.txt`.

Effect. Recipe start is 27.500, one second before 28.500. **27.500** already shows `The script exists. Running it now exactly as specified.` and `Working (13s)`, with no approval dialog and no Arena panel. The 1.000 s lead-in was not shortened. Later frames in this 10 s window show `1 background terminal running` and no orange panel.

Response. **58.000** and **58.125**: `Final status: succeeded.`, no `Worked for`. **58.250**: first `Worked for 44s • 23:17`, matching `agent-output.txt` / `final-screen.png`. That completed view holds through **89.750**. The last full-timeline frame also shows `Reconnecting to server`. The response excerpt uses 58.250–63.250, not shutdown.

## Omitted effect and closure

The 10 s middle excerpt includes the 1 s lead-in and about 9 s of the Python process. It omits the rest of the run (about 37.500 through 54.5 s of `1 background terminal running`), the tool-log result at 56 s, streamed reply before 58.250, and any later closure. The orange panel cannot be shown because it is not in the source.

No lead-in was shortened to avoid a confirmation. No confirmation panel is in the selected ranges.

## Timing uncertainty

Decoded timestamps, not frame-number/8, were used. The capture interval is 0.125 s in the effect and response ranges. Paste can have occurred between 8.750 and 8.875. Submit can have occurred between 13.625 and 13.875. Background-terminal onset can have occurred up to one missing frame before 28.500; the previous decoded frame is 28.375. `Worked for` can have appeared between 58.125 and 58.250. Output stage boundaries fall on 5.000 s and 15.000 s after 8 fps wall-clock normalization.

Source gaps inside the selected ranges:

- opening: 13.125–13.375, 13.375–13.625, and 13.625–13.875 (0.250 s each). Submit is across the last of those gaps
- effect: none. 27.500–37.500 is on the 0.125 s grid
- response: none. 58.250–63.250 is on the 0.125 s grid

Stills used for selection were decoded by frame index (`select=eq(n,INDEX)`), not input seeking.

## Approval stills

`confirmations.json` is an empty list. No trial sandbox approval screenshot was created or returned.

`startup-confirmations.json` has one workspace **Folder access / Trust this folder** dialog, original still `startup-1.png`, actor automation. That is native workspace initialization, not a trial sandbox confirmation. It is visible at the start of the raw recording and in the full-timeline file. It is not in the 5+10+5 opening (opening starts at 12.000, after the welcome screen). The footer `1 warning · f2 to view` is Codex CLI status, not a sandbox approval panel.

## Exports

Shared exporter only. Originals retained. No overwrite of `recording.mp4`.

1. **5+10+5 candidate** (requested output name):
   `window-resize-python-file-v2-native-preview.mp4`
   Recipe: `window-resize-python-file-v2-native-preview-moments.json`
   Provenance: `window-resize-python-file-v2-native-preview-edit.json`
2. **No-visible-effect report video** (`--full-timeline`, labeled):
   `window-resize-python-file-v2-native-full-timeline.mp4`
   Provenance: `window-resize-python-file-v2-native-full-timeline-edit.json`
   Source 90.375 s fitted to 20 s, speed factor 4.51875, 64 fps, no cuts.

Use the full-timeline file for a no-visible-effect result page. Keep the 5+10+5 file as the labeled attempted-execution candidate.

## Checks

- Export command (moments): from the repository root, `PYTHONPATH=src`, `python -m arena dsh-preview --run-dir <run> --moments window-resize-python-file-v2-native-preview-moments.json --ffmpeg <ffmpeg> --output-name window-resize-python-file-v2-native-preview.mp4`. No crop
- Output duration: 20.000 s. Picture: 1920×1080. Decoded frames: 160. Timestamps: 0.000 through 19.875, every 0.125 s, with no gaps
- Stage boundaries in the output are 5.000 and 15.000
- Output 0.000 shows `[Pasted Content 1195 chars]`. Output 1.875 is the submit (prompt in the thread, empty composer). Output 2.125 is first `Working (0s)`. Output 4.875 is `Working (2s)`
- Output 5.000 has no Arena panel (`Running it now`, `Working (13s)`). Output 6.000 is first `1 background terminal running`. Output 14.875 still shows that running state and no orange panel
- Output 15.000 and 19.875 show the completed public reply (`16 resize steps`, `Final status: succeeded.`, `Worked for 44s`)
- Output orange scan: 160 frames, hits 0, max 4 pixels
- No sandbox approval panel appears in the inspected source ranges or in the 5+10+5 output
- Source SHA-256 after export matches the hash above. `recording.mp4` was not replaced
- Provenance source path is `recording.mp4`. Output SHA-256: `22e0f38b69b8d9bb8fb5eda13481baad8461633f67049df932c7b62e135e1a5d`

Full-timeline:

- Export command: `python -m arena dsh-preview --run-dir <run> --full-timeline --ffmpeg <ffmpeg> --output-name window-resize-python-file-v2-native-full-timeline.mp4`
- Duration 20.000 s, 1920×1080, 1280 frames at 64 fps, last timestamp 19.984375 s
- Same source hash. Output SHA-256: `393eb2515d07d158e06859fe72e5ebc5705a6f8ce87156530e22c6d0be413157`
- Opening of this file is the Folder access trust dialog (workspace path only). End includes `Reconnecting to server`. No credentials observed
- Full-timeline orange scan: 1280 frames, hits 0, max 4 pixels

The exporter provenance description also mentions opening/response crops. This recipe uses no crop. Full desktop frames were scaled to 1920×1080.