feat(hid): recognise Nano receiver 046d:c534 (MK270, MK295)

[4ni1ak]

Summary

• crates/openlogi-device-registry/src/receiver.rs's RECEIVERS table had no entry for USB product ID 0xc534 — the Nano receiver bundled with budget wireless combos such as the MK270 and MK295 — so OpenLogi never enumerated the receiver or the paired keyboard/mouse at all.
• Added the entry, cross-checked against Solaar's NANO_RECEIVER_C534 as an established reference implementation (same nano-receiver family already covered here by the neighboring 0xc537 entry from feat(hid): support G602 nano receiver #684).
• openlogi-device-registry::receiver::RECEIVERS is the single source of truth other lookups (find_receiver, crates/openlogi-core/src/hid/route.rs) already consume, so this one-line addition is sufficient — no other list needed updating.

Changes

• crates/openlogi-device-registry: register 046d:c534 as a Nano-brand, Unifying-protocol receiver.

Testing

• cargo fmt --all -- --check
• cargo clippy --workspace --all-targets -- -D warnings
• cargo test --workspace
• RUSTDOCFLAGS="-D warnings" cargo doc --workspace --no-deps --document-private-items --exclude openlogi-ui --exclude openlogi-desktop --exclude openlogi-overlay --exclude openlogi-agent
• Not runtime-tested against real MK270/MK295 hardware — that verification is the maintainer's call; the reporter's openlogi list/Device Manager output (hardware ID VID_046D&PID_C534) is what this fix targets.

Fixes #866

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; the receiver registration is now protected by focused lookup coverage.

Summary

The PR registers Logitech Nano receiver 046d:c534 as using the Unifying protocol and adds focused regression coverage for its lookup mapping.

• Adds the Nano receiver descriptor to the central receiver registry.
• Verifies lookup by vendor/product ID, receiver brand, and protocol.
• Fully addresses the previously reported lack of direct regression coverage.

_{Reviews (2) · Last reviewed commit: "test(hid): pin the new c534 receiver's e..."}