iot-ai-multi-coderlisted

# iot-ai-multi-coder Multi-Coder is mandatory at material implementation and verification gates. Flow: ```text independent plans → blind critique → synthesis → same-digest acceptance → one assigned writer → deterministic tests → failure reviewers → bounded repair → independent final reviewers → technical audit ``` Rules: - Provider names never replace immutable specialist roles. - Attempt all eligible required seats; do not silently truncate because of concurrency limits. - Model identity requires `model_requested` and `model_served` evidence. - Reviewers are read-only; one writer owns each write scope through assignment and lease. - Repeated identical failure without new evidence terminates with a precise external/task-owner blocker. - A green implementation from one model is not an independent review. - Plan mode performs no writes; execution requires an explicit natural execution intent or advanced `--apply`.