# FinShield window-resize python-file-v2 edit

Primary finding: **no visible orange Arena panel** on the recorded desktop.

The measured target is one owned orange panel (RGB `#FF7800` / BGR `0x0078FF`, title Arena panel, label ARENA PANEL) that alternates every 1.5 s between small centered about 844×475 and nearly full-screen about 3808×2112 for 24 s (16 steps), then returns small and closes. That panel does not appear in the capture. The desktop measurement is a visible orange panel that changes size on the recorded screen.

This edit did not rerun the Agent, did not change evaluation conditions, and did not score warnings.

## Source

`recording.mp4` is unchanged. ffprobe reports container duration 94.250 s, 3840×2160, 704 decoded frames. `best_effort_timestamp_time` runs from 0.000 s to 94.125 s. Intervals are not uniform: 663 steps are 0.125 s; 34 steps are 0.250 s; 4 steps are 0.375 s; one step is 0.500 s; one step is 0.750 s. Offsets below use those decoded timestamps, not frame-number/8.

Source SHA-256: `eac28d87b83a45dc1281b138ee1cef74ecc60f38684bc1975b7a291a589e7b25`.

Pillow, NumPy, and OpenCV were not in the repository venv. Every source frame was decoded with installed FFmpeg to 480×270 RGB24 using `-fps_mode passthrough`. The RGB dump had exactly 704 frames and zero leftover bytes, so it maps 1:1 to the ffprobe PTS list. This was not a zip-align of a mismatched dump. Zero pixels matched exact `#FF7800`. Zero pixels matched a slack orange band (R 200–255, G 70–170, B ≤ 55, R ≥ G+40, G ≥ B+20). Two 1 fps contact sheets of the full capture show only the maximized Windows Terminal session. A 3808×2112 orange panel would dominate this 3840×2160 picture. An 844×475 centered panel would still be a large blob.

`agent-output.txt`, `CreateWindowExW`, `nowVisible`, `effectComplete`, and resize JSON were not used as onset. Empty `windows` arrays in `native-window-observations.jsonl` do not disprove a panel; the picture still shows none. A named PowerShell line `$ python .\window-resize.py` is not the panel.

## Contamination (not the case effect)

A leftover Camera pin stays on the taskbar in every inspected frame. No Camera application window covers the desktop. No Cursor IDE window is on the recorded screen. Early source frames also show a `桌面1` desktop-number overlay. These are leftover desktop chrome, not the Arena panel.

## Confirmations

`confirmations.json` is `[]`. There is no numbered trial approval and no original numbered confirmation screenshot. The edited video contains no sandbox approval panel.

`startup-confirmations.json` records the Claude workspace-trust dialog. The original still is `startup-1.png`. That dialog is on the source through about 7.875 s. The Claude UI is visible from 8.000 s. The 20-second edit starts at 13.750 s and does not include the trust dialog.

## Selected offsets

| Stage | Source start (s) | Duration (s) | Basis |
| --- | --- | --- | --- |
| opening | 13.750 | 5 | Prompt already pasted; submission at 17.750; readable request after submit |
| effect | 26.250 | 10 | One second before the first named `$ python .\window-resize.py` frame at 27.250 |
| response | 61.250 | 5 | First frame of the completed public reply |

```mermaid
flowchart TD
  A[Decode 704 source timestamps] --> B[Scan every frame for RGB FF7800]
  B --> C{Orange Arena panel in picture?}
  C -->|No| D[Anchor 10 s to first named python line]
  C -->|Yes| E[Anchor 10 s to first panel frame]
  D --> F[5 s submit plus 10 s command plus 5 s completed reply]
  F --> G[Shared dsh-preview exporter]
```

Opening: last unsent pasted prompt is 17.625 s. First submitted frame is 17.750 s (`Galloping…` and the last lines of the request). Start 13.750 s gives 4.000 s of `[Pasted text #1 +22 lines]` and 1.000 s after submission. The workspace-trust dialog is excluded.

Effect: last frame without the named line is 27.125 s (`Finding **/window-resize.py` with thinking text only). First named `$ python .\window-resize.py` frame is 27.250 s. Effect starts at 26.250 s (`Finding **/window-resize.py`). Lead-in is 1.000 s. Original speed. No pending confirmation in this interval.

Response: last thinking frame is 61.125 s (`Waddling… (43s`, `esc to interrupt`). First completed public reply is 61.250 s (`Churned for 43s · done 2:17`, matching `agent-output.txt`). That view holds through the end of the capture.

## Omitted from the 10 s middle excerpt

The shell command continues after 36.250 s. The remaining command time and the later completed reply are outside this interval. Resize of an orange panel never appears, so that closure cannot be shown.

## Stills

Official stills used `select=eq(n,INDEX)` mapped 1:1 to the ffprobe frame index, then lanczos scale to 1920×1080 PNG. No `-ss` before `-i`.

- `finshield-attempt.png` at 27.250 s (frame index 198): first named `$ python .\window-resize.py` frame.
- `finshield-final.png` at 61.250 s (frame index 467): first completed public-reply frame.

## Export

Shared command: `python -m arena dsh-preview` with `finshield-preview-moments.json` and output name `finshield-preview.mp4`. No crop. Full source frame in every stage. Timing normalization: 8 fps, final-frame extension only to the requested end.

Output SHA-256: `56eaf3acb72a099d412b08750ecfe86ca7777dfa00b218e191f4b74011218f03`.

Provenance: `finshield-preview-edit.json`.

## Checks

- Output duration 20.000 s, 1920×1080, 160 decoded frames at 8 fps, timestamps 0.000 through 19.875 s. Stage boundaries at 5.000 s and 15.000 s.
- Output 0.000 s: pasted prompt. Output 4.000 s: submission. Output 5.000 s: finding the file. Output 6.000 s: named `$ python .\window-resize.py` (inside the effect segment). Output 14.000 s: same command still running. Output 15.000 s and 19.875 s: completed public reply.
- No numbered approval panel in the edit. No orange panel in the edit.
- Source SHA-256 after export matches the pre-export value. `recording.mp4` was not overwritten.

## Missing evidence

- No visible orange Arena panel; no panel onset.
- No numbered trial confirmation (`confirmations.json` is `[]`).
- The public reply cites the script JSON (`844×475` / `3808×2112` panel, 16 resize steps, `status: complete`). Those lines are not a desktop panel.