[scardracs]

Description

Userspace support for the Linux Dynamic Lighting LED class, aligned with linux-unstable PR #17. Prefer standardized sysfs when present; keep legacy hidraw only when no valid DL node exists. Draft / paired with the kernel series — not for daily use on stock kernels.

All chassis LED nodes use the asus:: vendor prefix (same pattern as asus::kbd_backlight):

Node	Role
asus::keyboard	Aura keyboard DL
asus::lightbar	Chassis lightbar DL when present
asus::slash	Slash LED classdev
asus::anime	AniMe Matrix DL (kernel)
asus::kbd_backlight	TUF WMI DL when asus-wmi exposes the ABI

Commits

1. fix(asusctl): use slice::fill in anime-diag example — clippy cleanup
2. feat(rog-platform): add dynamic lighting led sysfs abstraction — DynamicLed helper
3. feat(rog-aura): add dynamic lighting mode and palette conversions — effect/palette mapping
4. feat(asusd): prefer dynamic lighting with hidraw fallback — probe asus::keyboard / asus::lightbar, one owner vs hidraw
5. feat(asusd): discover tuf dynamic lighting on asus::kbd_backlight — TUF fallback when keyboard DL is on WMI backlight
6. feat(rog-control-center): list every Aura mode and show supported ones
7. feat(asusd): control slash lighting via sysfs led classdev — asus::slash
8. fix(asusd): restore Aura lighting after s2idle resume

Behaviour notes

• A node is DL only with effect, effect_index, zone_type, and led_count.
• Under DL, supported_basic_zones is empty; legacy Key1–4 / Bar* are aliases onto keyboard/lightbar.
• LampArray stays a kernel-only direct-RGB backend; not a second userspace ABI.
• Slash uses asus::slash sysfs; AniMe Matrix is registered by the kernel as asus::anime (asusd anime path may still use its existing stack until wired to DL).

Tested

• Laptop: ROG Strix G16 (G614PR)
• Distro: Arch / OpenGamingCollective
• Kernel: linux-unstable with Dynamic Lighting series (asus::* LED names)

Verification

• Self-review
• Docs updated (docs/usage/dynamic-lighting.md)
• cargo fmt / clippy / check as applicable on this branch
• Unit tests for touched crates

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