\u00a77.8 campaign results: manager_routing 1.06M execs (exact-counter and
parked-bytes invariants held across every adversarial sequence),
envelope_semantic 2.44M execs (coverage saturated, all event kinds
round-trip), spec_parse 10.8M execs (registry compiled every
attacker-shaped schema or rejected cleanly). All exited 0, zero
artifacts.
Also records the two harness-model defects the fuzzer caught in the
interim (per-receiver EOF-sentinel latch; odd/even Adopt range per
ADR-047 \u00a75). Doc-only + harness fixes; no crate changes.