3349270171
Adds Fix #5 (M2 + M3 — STOP_SENDING for single-group cancel + RESET_STREAM with typed code on Drop replies) to the compliance audit doc. The two items shipped together because the plumbing is shared — extending `:quic`'s StrippedWtStream with reset/stopSending closures, extending the WebTransport interfaces, and routing through all adapters was the prerequisite for both. Updates the gap matrix (M2 + M3 → ✅), the TL;DR (now reads "six shipped fixes + M6 closed; no 🟡 items remain open"), and the deferred-items list (only L1 / L2 / L3 remain, all 🟦 with explicit rationale). Updates the audio-rooms completion-plan pointer with the new shipped count. https://claude.ai/code/session_012TGfo99Ugz7fcCPv85a8Tq