fix(hook): normalize Windows cursor position to DIP scale

[fly530]

Summary

Actions Ring overlay drifted away from the cursor on Windows displays scaled above 100% (e.g. 150%), while it stayed centered at 100%.

Changes

• openlogi-hook: cursor_position() on Windows resolves the cursor's monitor via MonitorFromPoint and divides the raw GetCursorPos physical-pixel result by that monitor's GetDpiForMonitor scale factor, returning DIP coordinates that match GPUI's own (already logical) display bounds — the same resolution-independent space macOS/Linux already report.

Testing

• cargo check -p openlogi-hook
• cargo clippy -p openlogi-hook --all-targets -- -D warnings
• cargo test -p openlogi-hook (20 passed)
• cargo fmt --all -- --check
• Hardware-verified: built openlogi-desktop/openlogi-agent/openlogi-overlay in release and confirmed the Actions Ring stays centered on the cursor at 150% Windows display scaling.

[greptile-apps]

Greptile Summary

This PR converts Windows cursor coordinates from physical pixels to display-independent coordinates using the effective DPI of the cursor’s monitor.

• Enables the required Windows GDI and HiDPI API bindings.
• Resolves the cursor’s monitor and queries its effective DPI.
• Falls back to the default 96 DPI when the query fails or returns invalid values.
• Documents the cross-platform logical-coordinate contract for CursorPosition.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete blocking or independently actionable non-blocking issue identified.

The changed Windows path validates cursor and DPI API results, preserves a safe 96-DPI fallback, and returns coordinates in the logical space documented for existing overlay consumers.

Important Files Changed

Filename	Overview
crates/openlogi-hook/src/windows.rs	Normalizes Windows cursor coordinates using the containing monitor’s effective DPI, with validation and a 96-DPI fallback; no concrete changed-code failure was established.
crates/openlogi-hook/src/lib.rs	Clarifies that cursor positions use the logical coordinate space expected by GPUI consumers.
crates/openlogi-hook/Cargo.toml	Enables the windows-sys GDI and HiDPI features required by the new monitor DPI calls.

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