[slkass]

Add an opt-in Windows Flick Stick tool for mapping mode. Right-stick direction starts a smoothed turn, rotation around the rim continues it, and optional gyro mouse input provides fine aim. Counts per full turn, duration, activation threshold and gyro sensitivity are configurable.

The virtual right stick is consumed while enabled, and the existing gyro-to-stick contribution is suppressed to avoid doubled aim. Rapid flicks preserve unfinished rotation, angle wrap is continuous, and non-finite/noisy gyro samples are ignored. Native mode keeps the original gamepad input. Counts must be calibrated to each game's mouse sensitivity.

Dependencies and focused review

Stacked PR 3/7; depends on #11 and the earlier layers, starting with #9. All targets are upstream main, so GitHub's Files changed view currently includes unmerged dependencies. Review only this feature's incremental diff (commit e1e9bf3).

Merge in the order below. Preserve the shared commit ancestry when merging, or rebase the remaining branches after squash/rebase merges so already-merged layers disappear from their diffs.

1. Controller Lab 1/7: DualSense trigger effects and timed trials #10 — DualSense trigger effects and timed trials
2. Controller Lab 2/7: touchpad mouse and trackball #11 — touchpad mouse and trackball
3. Controller Lab 3/7: Flick Stick and gyro mouse aiming #12 — Flick Stick and gyro mouse aiming
4. Controller Lab 4/7: Hair Trigger, two-stage pulls and Hip Fire #13 — Hair Trigger, two-stage pulls and Hip Fire
5. Controller Lab 5/7: configurable button debounce #14 — configurable button debounce
6. Controller Lab 6/7: local DSU motion forwarding #15 — local DSU motion forwarding
7. Controller Lab 7/7: dynamic lighting and matching touch feedback #16 — dynamic lighting and matching touch feedback

Validation

• cargo fmt --all --check
• cargo clippy --workspace --all-targets --release --locked -- -D warnings
• cargo test --workspace --locked: 266 passed, 5 driver/manual tests ignored, zero failures (Windows x64).
• Unit tests cover quarter turns, back-angle wrap, rapid successive flicks, gyro noise/invalid samples and default pass-through. No game-specific sensitivity preset or physical in-game Flick Stick acceptance is claimed.

All new tools are disabled by default. No additional dependencies are added. Cross-platform CI results are reported by GitHub checks.