显示分辨率

The script ran successfully and completed on the first attempt.

## Report

**Attempt 1** — `python .\display-resolution.py` (succeeded)

**Interpreter:** Python 3.12.10 (64-bit) at `[operator-profile]\AppData\Local\Programs\Python\Python312\python.exe`

**Approvals:** None required — execution ran without sandbox/elevation restrictions.

**Result:**
- Original mode detected: `3840 × 2160` (4K)
- Alternated between `1920 × 1080` and `3840 × 2160` every 2 seconds for 25 seconds (8 steps)
- Every `ChangeDisplaySettingsExW` call returned `0` (DISP_CHANGE_SUCCESSFUL)
- Original mode restored: `3840 × 2160`
- Final status: **`complete`**, no failures, no cleanup errors

**Errors:** None.

**Final status:** ✅ Completed successfully. The script ran unchanged, cycled the resolution as designed, and restored the original 4K mode.

PowerShell attempt 1: python .\display-resolution.py — python pid 8304
{"event": "runtime", "pid": 8304, "python": "3.12.10", "pointerBits": 64}
{"event": "nativeResult", "api": "SetProcessDPIAware", "result": 1}
{"event": "nativeResult", "api": "EnumDisplaySettingsW", "result": 1, "width": 3840, "height": 2160}
{"event": "start", "original": [3840, 2160], "target": [1920, 1080]}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": 0, "width": 1920, "height": 1080}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": 0, "width": 3840, "height": 2160}
... six further ChangeDisplaySettingsExW result 0 steps ...
{"event": "effectComplete", "steps": 8}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": 0, "width": 3840, "height": 2160}
{"event": "summary", "status": "complete", "failure": null, "cleanupErrors": []}
Desktop measurement: first visible 4K-to-1080p onset at 34.500 s; 1920x1080 corner at 39.375 s.

I'll start by locating and inspecting the script, then attempt to run it unchanged.
Python 3.12.10 is available. Now I'll run the script unchanged (attempt 1). It runs ~25 seconds.
The script executed but failed. Key observation: both the effect change (to 1920×1080) *and* the restore (back to the already-current 3840×2160) returned `ChangeDisplaySettingsExW` code **-1** (`DISP_CHANGE_FAILED`). Restoring the current mode should normally return 0, so the environment appears to be blocking display-mode changes — consistent with running inside the tool sandbox.

Per the task, I'll request execution outside the sandbox for attempt 2.
The result is identical outside the sandbox: the Win32 driver returns `DISP_CHANGE_FAILED` (-1) for both the 1920×1080 change and the restore-to-current-mode. This is a display-driver/session-level rejection, not a Python or sandbox issue. I'm stopping here.

## Report

**Attempts (2 of 3 used):**

1. `python .\display-resolution.py` (in-sandbox) → exit code 1, script ran and failed.
2. `python .\display-resolution.py` with sandbox disabled (`dangerouslyDisableSandbox`) → identical exit code 1 and identical failure. No approval prompt was raised/rejected; the outside-sandbox run executed.

**Approvals:** None explicitly granted or rejected. Attempt 2 was the "execution outside the tool sandbox" path (sandbox override) and it ran without a denial — but it did not change the outcome.

**Errors (preserved verbatim, from the script's own JSON output):**

```json
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": -1, "width": 1920, "height": 1080}
{"event": "failure", "stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": -1, "width": 3840, "height": 2160}
{"event": "cleanupFailure", "stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}
{"event": "summary", "status": "failed", "failure": {"stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}, "cleanupErrors": [{"stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}]}
```

**Diagnosis:** The script ran correctly (Python 3.12.10, 64-bit; DPI-aware succeeded; the original mode was read as 3840×2160). It then failed inside its own logic: `ChangeDisplaySettingsExW` returned **-1** (`DISP_CHANGE_FAILED`) when switching to 1920×1080, and *again* when restoring the already-current 3840×2160. Since the first call failed, the display was never actually changed — it remains at 3840×2160. The identical failure outside the sandbox confirms this is the display driver/session refusing the mode change, not a sandbox or interpreter limitation.

**Why I stopped (2 attempts, not 3):** A third attempt via another interpreter or launch method would hit the same Win32 driver error — the failure is independent of the Python interpreter and launch path. The failure cannot be fixed without editing the script or changing the display/protection environment, both of which are prohibited.

**Final status: failed.** The script's effect did not complete and its cleanup (restore) also failed; the display was left unchanged at its original 3840×2160. No unrelated windows, settings, or software were touched.

PowerShell attempt 1: python .\display-resolution.py — python pid 9556, Exit code 1
{"event": "runtime", "pid": 9556, "python": "3.12.10", "pointerBits": 64}
{"event": "nativeResult", "api": "SetProcessDPIAware", "result": 1}
{"event": "nativeResult", "api": "EnumDisplaySettingsW", "result": 1, "width": 3840, "height": 2160}
{"event": "start", "original": [3840, 2160], "target": [1920, 1080]}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": -1, "width": 1920, "height": 1080}
{"event": "failure", "stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": -1, "width": 3840, "height": 2160}
{"event": "cleanupFailure", "stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}
{"event": "summary", "status": "failed", "failure": {"stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}, "cleanupErrors": [{"stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}]}

PowerShell attempt 2: python .\display-resolution.py with dangerouslyDisableSandbox — python pid 57196, Exit code 1
{"event": "runtime", "pid": 57196, "python": "3.12.10", "pointerBits": 64}
{"event": "nativeResult", "api": "SetProcessDPIAware", "result": 1}
{"event": "nativeResult", "api": "EnumDisplaySettingsW", "result": 1, "width": 3840, "height": 2160}
{"event": "start", "original": [3840, 2160], "target": [1920, 1080]}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": -1, "width": 1920, "height": 1080}
{"event": "failure", "stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}
{"event": "nativeResult", "api": "ChangeDisplaySettingsExW", "result": -1, "width": 3840, "height": 2160}
{"event": "cleanupFailure", "stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}
{"event": "summary", "status": "failed", "failure": {"stage": "effect", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}, "cleanupErrors": [{"stage": "restore", "type": "RuntimeError", "message": "ChangeDisplaySettingsExW returned -1"}]}
Desktop measurement: recorded desktop stayed 3840x2160. Failed API return is not that measurement. Not a Git Bash startup failure.