chore(v2): zero-warnings hygiene — clear 13 build warnings across 4 crates
Removed unused Matter imports (sensing-server bridge/commissioning), dropped
needless mut (bridge, desktop discovery), documented ClockGateDecision variant
fields (ruvector coherence), and marked deferred-P2/platform-only helpers
#[allow(dead_code)] with honest notes (entity_on_matter/next_endpoint =
Matter-publisher API deferred per ADR-159 §A5; decode_jpeg_to_rgb = macOS-only).
Behavior-neutral; touched-crate tests green. Remaining 1 warning is a benign
Windows .pdb filename collision inherent to the Tauri lib+bin desktop crate
(renaming the bin would break Tauri bundling — won't-fix for a cosmetic warning).
Co-Authored-By: claude-flow <ruv@ruv.net>
0d6c20c278