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glm-5.3-flash 603f398f6d docs: reverse-flow POC summary — -R shape validated end-to-end 
POC at /workspace/alktunnels-reverse-poc (14 tests, clippy/fmt clean,
repeat-run stable) over alkcall 0.6.0:

- The review 007 non-finding trace confirmed by execution: the hub
  (accept side) opens tunnel channels toward a connect-side worker
  serving its own open op (from_connection_with_serving +
  ChannelOperations::register_on + post-hoc openable registration)
- ADR-047 §5 exercised in the Pub-like orientation: the worker
  (connect side) allocates odd IDs; the hub adopts
- R-01 plan flow under concurrency: two same-resource opens, distinct
  channels, distinct dialed handles — the forward POC's handoff race
  is structurally gone
- OQ-TN-03's last open thread closed: no advertisement op needed —
  the listener is the initiator's own local resource; a far-side
  listener is a producer-side listen establisher over the same open op
- W4 EOF sentinel propagation validated (half-close semantics);
  W3 adopter self-reaping pinned as a TunnelSession spec requirement;
  W2 post-hoc registration viable

Findings:
- F-1: ChannelPlan's Send+Sync bound constrains plan payloads
  (socket halves carry + Sync; spec should pin the constraint)
- F-2: empty UDP datagrams collide with the EOF sentinel in raw
  pass-through (pinned by an executable test) — the length-framed
  codec is mandatory for UDP; raw pass-through stays
  stream-substrate-only. Second validation of the codec decision;
  OQ-TN-02 mandate strengthened

W1 (connect-side serving path resolves caller identity only via
payload auth_token) filed upstream as alkcall consumer-findings
ledger CF-005 (alkcall 0d287a9).

Verification: cargo test 14/14, clippy --all-targets -D warnings,
fmt --check — all clean, repeat-run stable
 2026-09-07 10:06:42 +00:00
glm-5.3-flash b3b00f37bd chore: consume alkcall 0.6.0; OQ-TN-06 resolved by ADR-050 
alkcall 0.6.0 landed the review 007 remediation (filed from this
crate's UDP POC pass):
- R-01: Establishment carries the plan (ADR-049 amendment 2) —
  typed-opaque ChannelPlan, OpenHandler gains the plan param, the
  wrapper threads it; the POC's side-channel HandleHandoff and its
  same-resource race are dead (the establisher returns the dialed
  handle: Ok(Establishment::new(plan)))
- R-02: OpenHandler JoinHandle lifetime contract documented (early
  return = teardown-at-birth) + yield-once acceptance flag and
  debug! birth-teardown hint
- R-03: pump_bidi pinned upstream (ADR-050) — two pumps,
  shutdown-on-completion, (u64, u64) copy counts, errors EOF-shaped

alktunnels updates:
- Cargo.toml: alkcall 0.5.0 -> 0.6.0 (lockfile resolves 0.6.0)
- AGENTS.md convention 8: use alkcall channels::pump_bidi, do not
  hand-roll; await it inline inside the OpenHandler's task
- AGENTS.md convention 11: pin note updated; amendment 2 marked
  load-bearing (Establishment::new replaces side-channel handoff)
- AGENTS.md convention 13: fixed ADR citation bug (was "alkcall
  ADR-024, ADR-050" — those are peer-graph-routing and pump-bidi;
  intended targets are alknet ADR-024/ADR-050 with their alkcall
  ports ADR-019/ADR-011)
- AGENTS.md architecture context: ADR-050 + ADR-049 amendment 2 rows
- phase-0-findings OQ-TN-06: RESOLVED — pump_bidi landed upstream;
  the POC is cited as convergence input alongside alktty and the
  assembly-layer copies; Phase 1 consumes the helper
- phase-0-findings OQ-TN-09: implementation note updated —
  Establishment::new(plan) replaces the handoff sketch
- poc-summary: resolutions addendum for both upstream findings
  (R-01/R-02/R-03 with the typed-opaque and (u64, u64) deviations
  recorded); references note 0.6.0 supersession

Verification: cargo test (0 tests, ok), clippy --all-targets
-D warnings, fmt --check, wasm32 check, doc --no-deps — all clean
 2026-09-07 09:27:08 +00:00
glm-5.3-flash 6beabe9457 docs: UDP tunnel POC summary — shape validated end-to-end 
17 tests pass (7 codec + 10 integration). The producer/consumer
shape, ADR-049 establishment integration, codec decision, and typed
establishment errors all validated over alkcall 0.5.0 channels.

Key findings folded into the ledger:
- OQ-TN-05 resolved for stream substrates: no backend trait —
  pump_halves generic over boxed halves (TCP into_split, UDP
  UdpHalf adapter); remaining thread is only the hub re-produce
  composition question
- OQ-TN-06 convergence test satisfied: producer pump and consumer
  pump are the same shape modulo channel side; extraction decidable
  in Phase 1
- New finding for the alkcall ledger: OpenHandler JoinHandle
  semantics are load-bearing and undocumented — a handler that
  returns before the data plane starts tears the channel down at
  birth (the POC found this by hanging; the pump must be awaited
  inline). Plus: Establishment should carry the channel plan
  (the reserved extension point) to kill the establisher handoff
  side-channel
- UdpHalf truncation semantics flagged for the Phase 1 ADR
  (recommend fail-loud over silent truncation)

POC crate: /workspace/alktunnels-udp-poc (db224cc).
 2026-09-07 07:53:39 +00:00