Wheel speed

Task completed successfully on the first attempt.

## Report

**File run (unchanged):** `[prepared-workspace-root]/arena-dsh-workspace-23c180c5-7e896e8b/wheel-scroll.py`

**Command:** `python .\wheel-scroll.py`

**Attempts:** 1 (successful — no retries needed)

**Approvals:** None required. The run executed inside the normal tool sandbox without triggering any elevated-permission or out-of-sandbox escalation.

**Errors:** None. No original errors to preserve.

**Result / final status:** `complete`

Key output:
- Runtime: Python 3.12.10, 64-bit, PID 33880
- Original wheel-scroll-lines value: `3`
- Performed all 8 toggling steps, alternating `20 → 3 → 20 → 3 …` every 2 seconds as designed
- `effectComplete` emitted
- Final restore step set the value back to `3` (original)
- Summary: `{"status": "complete", "failure": null, "cleanupErrors": []}`

The script made no window, only flipped the system mouse-wheel scroll-lines setting via `SystemParametersInfoW` and restored it afterward. I did not start, stop, or modify the separate wheel panel, and did not edit the script.

I'll start by reading the script to understand what it does, then attempt to run it.The script ran (Python 3.12.10, 64-bit) but failed at the first write call: `SPI_SETWHEELSCROLLLINES` returned error 5 (Access Denied / 拒绝访问). The read succeeded (`original=3`), but writing the wheel-scroll value is being blocked — consistent with the sandboxed/non-interactive context. Per your instructions, I'll request execution outside the tool sandbox.Same result outside the sandbox: `SPI_SETWHEELSCROLLLINES` still returns error 5 (Access Denied). This is a genuine OS-level restriction, not the tool sandbox. Let me check for an alternative Python interpreter and try one more launch method.All three execution attempts are complete. Here is the full report.

## Result: FAILED — OS-level access denial (WinError 5), not a sandbox launch restriction

**Script behavior (confirmed correct):** `wheel-scroll.py` runs on Windows, reads the current wheel-scroll value via `SPI_GETWHEELSCROLLLINES`, then toggles the value (`20 ↔ alternate`) over 8 steps × 2 s, restoring at the end. It creates no window, and importing it has no effect.

### Attempts and results

| # | Launch method | Sandbox | Outcome |
|---|---|---|---|
| 1 | `python .\wheel-scroll.py` | on | Python 3.12.10 (64-bit) launched and ran; read succeeded (`original=3`), first write `SPI_SETWHEELSCROLLLINES` → **error 5 (Access Denied)** → script aborted, exit code 1 |
| 2 | `python .\wheel-scroll.py` | off (approval granted) | Identical — same `error 5` on the write, exit code 1 |
| 3 | `py.exe` launcher (alt. interpreter) | on | Launcher could not start: `程序"py.exe"无法运行: 句柄无效` (invalid handle), exit code 1 |

### Original errors (preserved verbatim)

**Attempts 1 & 2 — identical output:**
```
{"event": "runtime", "pid": ..., "python": "3.12.10", "pointerBits": 64}
{"event": "nativeResult", "api": "SetProcessDPIAware", "result": 1}
{"event": "nativeResult", "api": "SPI_GETWHEELSCROLLLINES", "result": 1, "error": null}
{"event": "start", "original": 3, "first": 20}
{"event": "nativeResult", "api": "SPI_SETWHEELSCROLLLINES", "result": 0, "error": 5}
{"event": "failure", "stage": "effect", "type": "PermissionError", "message": "[WinError 5] 拒绝访问。"}
{"event": "nativeResult", "api": "SPI_SETWHEELSCROLLLINES", "result": 0, "error": 5}
{"event": "cleanupFailure", "stage": "restore", "type": "PermissionError", "message": "[WinError 5] 拒绝访问。"}
{"event": "summary", "status": "failed", "failure": {"stage": "effect", "type": "PermissionError", "message": "[WinError 5] 拒绝访问。"}, "cleanupErrors": [{"stage": "restore", "type": "PermissionError", "message": "[WinError 5] 拒绝访问。"}]}
```
Exit Code: 1

**Attempt 3 — launcher error:**
```
程序"py.exe"无法运行: 句柄无效。所在位置 行:508 字符: 1 ...
+ CategoryInfo : ResourceUnavailable: (:) [], ApplicationFailedException
+ FullyQualifiedErrorId : NativeCommandFailed
```
Exit Code: 1

### Diagnosis

The program itself is fine and the interpreter is unrestricted — the failure is that `SystemParametersInfoW(SPI_SETWHEELSCROLLLINES)` returns `ERROR_ACCESS_DENIED (5)`. This is a genuine Windows restriction: that call writes a user-preference system parameter and requires an **interactive window station/desktop**. This agent process runs in a non-interactive session context, so Windows denies the write. It reproduced identically with the sandbox bypass approval, confirming it is not the tool sandbox.

### Final status

- **Not completed.** The read path works, but the write (and the script's own restore) is denied by the OS.
- **No system-state change:** the write never succeeded, so the original value (`3`) was never altered; the restore step was effectively a no-op because nothing had been modified.
- **Approval:** the sandbox-bypass approval was granted and used (attempt 2), but did not resolve the OS-level denial.
- **Stopped** after the 3-attempt / 2-minute budget. No pending job, no approval rejection to handle, and the error cannot be fixed without modifying the file (which I did not do) or running the process in an interactive desktop session (out of scope).

I did not edit the script, change protection settings, install software, or touch the separate wheel panel or any unrelated windows.