Code review response: No changes required

[Copilot]

Reviewed PR at maintainer request. No code changes made - provided technical feedback on existing implementation.

Review Summary

Analyzed the multi-monitor hole punch feature with Per-Monitor DPI support implementation. Key observations:

Strengths identified:

• Manual coordinate transformation correctly avoids PointFromScreen issues on mixed-DPI setups
• OnDpiChanged override with threshold-based checks prevents resize loops
• _isManualMonitorSwitch flag properly gates automatic monitor index updates
• Per-window DPI tracking in MonitorWindowContext enables accurate hole punch positioning

Concerns raised:

• Secondary window initial positioning uses main window DPI (line 885-888), corrected only in Loaded handler
• HoverRing positioning via Margin in Grid less efficient than Canvas during high-frequency mouse moves
• Silent exception swallowing in additional window mouse handling (line 423)
• Code duplication in hole punch calculation between main and secondary windows

Recommendations provided:

• Extract shared coordinate transformation logic
• Add diagnostic logging for DPI-related edge cases
• Consider memory implications of repeated window creation in all-monitors mode

No functional issues blocking merge identified.

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