feat(gui): polish device and pointer visuals

[AprilNEA]

Summary

Polish device selection and pointer settings so active, offline, and interactive states read more clearly without changing device behavior.

Changes

• GUI
  • give the active device card a persistent accent ring and tint
  • dim the complete device render, including cached lighting, while offline
  • truncate long device names before they crowd the detail tabs
  • use distinct gauge, SmartShift, and mouse icons for the pointer cards
  • replace the DPI preset remove hit target with the standard button component

Testing

• devenv tasks run openlogi:check
• cargo test -p openlogi-gui — 52 passed
• visually checked Home, Buttons, and Pointer screens with four discovered devices in the dev app
• device setting writes were not runtime-tested on hardware

Fixes: N/A (no linked issue)

[greptile-apps]

Greptile Summary

This PR polishes device and pointer visuals without changing device behavior.

• Adds a persistent accent treatment for the active device and dims offline device renders.
• Truncates long device names in the detail header.
• Introduces distinct icons for pointer-related cards.
• Replaces the DPI preset removal target with a standard compact button.

Confidence Score: 5/5

The PR appears safe to merge, with no concrete behavioral, build, or security defects identified in the changed GUI paths.

The referenced icon assets are registered, existing built-in icon call sites are preserved through equivalent Icon construction, and the remaining changes are localized presentation and control-component updates with no established broken behavior.

Important Files Changed

Filename	Overview
crates/openlogi-gui/src/app/detail.rs	Adds bounded device-name truncation and supplies distinct typed icons to pointer and device cards.
crates/openlogi-gui/src/app/home.rs	Adds a persistent active-card border and dims the complete device image and lighting layer while offline.
crates/openlogi-gui/src/app/widgets.rs	Generalizes panel-card helpers to accept configured Icon values while preserving existing built-in icons.
crates/openlogi-gui/src/components/dpi_panel.rs	Replaces the DPI preset removal div with the standard extra-small ghost button and enlarges the adjacent apply target.

_{Reviews (1): Last reviewed commit: "feat(gui): polish device and pointer vis..." | Re-trigger Greptile}