feat(hid): add standalone Litra light support

[tiaringhio]

Summary

Adds support for standalone Logitech Litra lights as non-HID++ devices, starting with Litra Glow.

Changes

• Add standalone light discovery and raw HID transport.
• Add Litra Glow controls for power, brightness, and color temperature.
• Expose light controls through the agent IPC, CLI, and GUI.
• Add model-specific Litra Glow artwork and remove generic/ghost device rendering.
• Preserve camera-linked automatic light activation.
• Keep GUI tests isolated from the user's persisted configuration.
• Update configuration and integration documentation.

Testing

• cargo fmt --all -- --check
• cargo clippy --workspace --all-targets -- -D warnings
• cargo test --workspace
• Manual validation performed with Litra Glow hardware.
• GUI launch and artwork rendering verified on macOS.

Fixes #144

[greptile-apps]

Greptile Summary

Adds standalone Logitech Litra light support across raw-HID discovery, agent control, configuration, CLI, and GUI.

• Introduces standalone-device inventory and raw-HID transport for Litra Glow.
• Adds power, brightness, temperature, and camera-linked automation controls.
• Reconciles partial and superseded GUI writes while serializing agent-side reapplication.
• Adds model artwork, localization, documentation, and wire-format coverage.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the prior partial-write, canceled-reapply, and superseded-edit issues are addressed by retained command outcomes, ordered reconciliation, and a cancellation check performed while holding the route lock.

Important Files Changed

Filename	Overview
crates/openlogi-gui/src/state/light.rs	Tracks current and superseded command batches so successful hardware writes are retained during partial-failure reconciliation.
crates/openlogi-agent-core/src/hardware/light.rs	Serializes standalone-light operations and rechecks cancellation under the route lock before background reapplication.
crates/openlogi-agent/src/server.rs	Exposes standalone-light RPC handlers that invalidate pending reapplications before explicit commands.
crates/openlogi-hid/src/standalone.rs	Discovers recognized standalone raw-HID devices and maps them to model-specific capabilities.
crates/openlogi-hid/src/write/litra.rs	Implements model-specific Litra command encoding and raw-HID writes.
crates/openlogi-agent-core/src/orchestrator.rs	Integrates standalone inventory, settings reapplication, and camera-linked light state into agent runtime management.

Sequence Diagram

sequenceDiagram
    participant GUI
    participant IPC as Agent IPC
    participant Agent
    participant HID as Litra HID
    GUI->>IPC: SetLight(route, command)
    IPC->>Agent: Cancel pending reapply
    Agent->>Agent: Acquire per-route lock
    Agent->>HID: Apply command
    HID-->>Agent: Result
    Agent-->>GUI: Typed result
    GUI->>GUI: Persist accepted settings or reconcile partial success

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_{Reviews (9): Last reviewed commit: "fix: rebase litra onto master and repair..." | Re-trigger Greptile}

[tiaringhio]

hi @AprilNEA, sorry if i'm disturbing you, are you able to leave feedback on this PR? i'm a first time contributor, i hope tagging you is the right thing to do.

thank you!