feat: wheel tilt-left/right as bindable buttons (verified on MX Ergo)

[g30r93g]

What

Adds the scroll-wheel tilt-left / tilt-right controls as first-class bindable buttons. These horizontal-tilt controls (HID++ 0x1b04 reprogrammable controls, CIDs 0x5b/0x5d) weren't detected or configurable before; they now appear on the mouse diagram with an action picker and default to horizontal scroll.

Addresses #100 (wheel tilt not detected / not configurable). That issue is filed against the M500S; this implements the general mechanism and is verified end-to-end on an MX Ergo (same standard Logitech tilt CIDs). I don't have an M500S to confirm, but the capture path and slot-name mapping are device-agnostic.

How (mirrors existing patterns)

• ButtonId::TiltLeft / TiltRight (appended, TOML-stable), default-bound to HorizontalScrollLeft / HorizontalScrollRight.
• Captured over HID++ via the same diverted-button rising-edge path as the DPI button; diverted only when a tilt is rebound (mirrors thumbwheel_armed), so native horizontal scrolling is untouched otherwise.
• GUI hotspots come from the existing asset markers by mapping SLOT_NAME_SCROLL_LEFT / SLOT_NAME_SCROLL_RIGHT — no asset-registry change.
• Localized across all 20 locales.

Verification

• cargo fmt --check, cargo clippy --workspace -D warnings, and cargo test --workspace (417 passed, 0 failed) all green.
• New unit tests: the capture rising-edge for both tilt CIDs, tilt_armed gating, and the slot-name mapping.
• On-device (MX Ergo, Bluetooth): diag controls reports 0x5b/0x5d as divertable, and a live capture session recorded 142 physical tilt events correctly mapped to TiltLeft / TiltRight (not swapped).

Not in scope

• The MX Ergo's Virtual Gesture Button (0xd7).
• Label-layout changes — the right gutter is intentionally reserved for the DPI/gesture column per existing code comments, so the tilt labels stay in the left column.

[greptile-apps]

Greptile Summary

This PR adds wheel tilt-left and tilt-right as bindable mouse controls. The main changes are:

• New TiltLeft and TiltRight button IDs with horizontal-scroll defaults.
• Optional HID++ diversion and capture for tilt CIDs.
• GUI slot mapping and locale labels for tilt controls.
• Tests for defaults, arming, slot mapping, and rising-edge capture.

Confidence Score: 5/5

This looks safe to merge after small follow-ups to tilt capture edge cases.

• The main binding, GUI, and default-scroll paths look consistent.
• Tilt capture can mis-handle rare event timing or crowded diverted-button frames.
• The reported issues are limited to edge behavior around rebinding and simultaneous diverted controls.

crates/openlogi-hid/src/gesture.rs and crates/openlogi-agent-core/src/watchers/gesture.rs

Important Files Changed

Filename	Overview
crates/openlogi-agent-core/src/watchers/gesture.rs	Adds tilt arming and capture-session propagation; the default gating is correct, with a short restart gap after binding changes.
crates/openlogi-core/src/binding.rs	Adds tilt button IDs, labels, ordering, and default horizontal-scroll actions.
crates/openlogi-hid/src/gesture.rs	Adds tilt CID diversion and rising-edge dispatch; normal press/release handling follows the existing button pattern.
crates/openlogi-hid/src/reprog_controls.rs	Adds constants for standard Logitech tilt-left and tilt-right CIDs.
crates/openlogi-gui/src/mouse_model/geometry.rs	Maps scroll-left and scroll-right asset slots to the new tilt buttons.
crates/openlogi-gui/locales/*.yml	Adds translated labels for the new tilt controls.

_{Reviews (1): Last reviewed commit: "docs(tilt): note wheel-tilt buttons in c..." | Re-trigger Greptile}