VerseVDI-Data-Plane/openspec/changes/archive/2026-07-30-phase3c-gateway-audit-remediation/specs/audio-fec-resilience/spec.md

ADDED Requirements

Requirement: Bounded audio FEC state advances after loss

The Apollo audio recovery window SHALL remain bounded and SHALL evict the oldest incomplete block when accepting a newer block would otherwise be rejected.

Scenario: Newer complete block follows sustained loss

• WHEN more than the bounded number of permanently incomplete audio blocks arrive before a complete newer block
• THEN the oldest stale state is dropped, drop telemetry advances, and the newer encoded payload is relayed unchanged