From the 2026-07-20 punktfunk-core quality sweep's adjudicated lows
(~/punktfunk-sweeps/punktfunk-core-2026-07-20.json), each with a
regression test:
- session: the two-lane seal's dead-worker fallback dropped the frame's
back half and returned Ok with half an access unit; the corpse lane
was also never respawned. The send-failure arm now reclaims the tail
(single-lane seals the WHOLE frame) and both failure arms drop the
lane so the next large frame respawns it. A recv-side death now
surfaces as an error instead of silent truncation.
- reassemble: Reassembler::reset() left pending_partial parked, so a
pre-flush stale partial survived Session::flush_backlog and was
delivered as the first "frame" after a jump-to-live.
- caps: resolve_codec echoed a non-conformant multi-bit preferred byte
verbatim (downstream from_wire folds it to HEVC — possibly outside
the shared set). It now isolates one bit of the intersection.
- endpoint: stream_transport_idle only floored the value; an absurd
operator-supplied idle timeout blew past QUIC's VarInt ms ceiling and
panicked host startup through the expect. Clamped to 1s..1h.
- pairing: PairRequest::encode cut the device name at a raw byte-64
boundary, splitting multi-byte UTF-8 (host showed U+FFFD forever);
it now shares Hello's char-boundary truncate_to.
The frozen-FEC-ceiling finding (reassemble.rs:109) was already fixed on
main by the sweep's high-severity commit — skipped as stale.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehler
76ac3cf867