[Bug]: gesture_owner = "MiddleClick" no longer works on MX Master 3S (regression in 0.6.24, works in 0.6.23)

### Summary

Middle-button gestures stopped working in 0.6.24. Setting `gesture_owner = "MiddleClick"` no longer diverts the middle button, so none of the directional actions fire. The same config works correctly on 0.6.23.

### Device

- MX Master 3S, connected over Bluetooth LE (no Bolt receiver)
- Config key: `direct:046d:b034`, `transports.btle = true`
- macOS 26 (Darwin 27.0.0), Apple Silicon

### Steps to reproduce

1. On 0.6.23, set the middle button as the gesture owner and bind four directions (e.g. Up = MissionControl, Down = ShowDesktop, Left = PrevTab, Right = NextTab). Confirm hold-and-push works.
2. Upgrade to 0.6.24, 0.6.25 or 0.6.26.
3. Hold the middle button and push in any direction.

### Expected

The bound directional action fires, and a tap still sends a plain middle click.

### Actual

No directional action fires. A tap still produces a plain middle click, so the button itself is alive. Every other button keeps working, and assigning `gesture_owner = "GestureButton"` (the thumb button) makes directions work again on that button. So gesture handling as a whole is fine; only `MiddleClick` as the gesture owner is broken.

### Config

Relevant lines from `~/.config/openlogi/config.toml` (identical on both versions, only the version differs):

```toml
[devices."direct:046d:b034:serial:REDACTED"]
gesture_owner = "MiddleClick"

[devices."direct:046d:b034:serial:REDACTED".bindings.MiddleClick]
Up = "MissionControl"
Down = "ShowDesktop"
Left = "PrevTab"
Right = "NextTab"
Click = "MiddleClick"
```

### Versions

- 0.6.23: works
- 0.6.24, 0.6.25, 0.6.26: broken
- Rolling back to 0.6.23 restores the behaviour immediately.

### Notes

Ruled out as causes: Input Monitoring and Accessibility permissions (re-granted several times, no effect), and any conflict with Logitech Options+ (not installed, no `logi` launch agents loaded).

Two changes in this range look like plausible suspects: the agent input-capture rework in 0.6.24 (#522, #532) and the per-device capture change in 0.6.25.

Separately, and possibly worth a look on its own: 0.6.24 onward ships with the bundle identifier `org.openlogi.openlogi.dev` (agent `org.openlogi.agent.dev`) instead of `org.openlogi.openlogi`. macOS treats that as a different application, so every previously granted TCC permission is dropped and the config directory moves from `~/.config/openlogi` to `~/.config/openlogi-dev`, silently orphaning existing settings on upgrade. If the `.dev` suffix is not intentional for release builds, it may be worth reverting.

Reproduce the regression with the supplied MiddleClick configuration, then compare the agent input-capture rework in 0.6.24 (#522, #532) with the per-device capture change in 0.6.25. Done means directional actions work for MiddleClick while a tap still sends a plain middle click, without breaking GestureButton ownership.

Written by the indexing model from the issue text.