nx_room_fec_wire.nx

nx_room_fec_wire.nx -- R1: the FRAME-LEVEL FEC wire protocol that makes the measured loss-resilience (nx_room_resilience) REAL on the relay. A media frame is sharded into k data + m parity packets (each with a 16-byte wire header); the receiver reconstructs the ENTIRE frame byte-exact from any k surviving shards (<=m losses). This is the shippable bridge: the abstract block accounting in nx_room_resilience is here proven on real frame BYTES through encode -> packetize -> lose -> recover -> byte-exact compare. Reuses the proven RS GF(256) codec from nx_room_fec.nx (no reimpl). WIRE HEADER (16B): [block_id u32][shard_idx u8][is_parity u8][k u8][m u8][frame_len u32][rsv u32] The relay forwards shards opaquely (content-blind); only the endpoints encode/decode. HONEST SCOPE: this proves the protocol + recovery. Wiring it into nx_vroom_daemon's vd_stream + the browser client, and DEPLOYING to the live family link, is the operator-gated follow-on (touches live family video -- coordinate, never hot-patch). main() is the SELF-VALIDATING GATE. Evidence -> knowledge/status/room_fec_wire.log. license_tier: ORIGINAL