Split the last open substrate-placement question: - Unix: ships with the local feature v1 (dial_unix — same halves shape as TCP; the wire enum already carried unix per ADR-001; the params task's schema list includes all three values) - Stdio: OUT of scope — a spawned process's stdin/stdout/stderr IS alktty's pipe mode (LocalTtyBackend + tokio::process + Stdio::piped, alktty tty-local.md): three multiplexed logical streams + the exit-code control chunk (alktty ADR-004) + signal forwarding (REQ-TTY-02). A stdio bridge here would be alktty's runner mode with the terminal stripped out — a strictly worse duplicate that also drops the semantics that matter (a byte tunnel has neither exit codes nor signals). Remote command execution composes via alktty on the same channels substrate. Updated: open-questions.md OQ-TN-14 (resolved), overview.md feature gate + deps + OQ summary, producer.md OQ ref, OQ-TN-10 promotion (#3 split), phase-0-findings + both POC summaries' resolution notes, params task (schema enum includes unix), local-socket-halves task (unix ships, stdio does NOT — with the composition rationale), oq-tn-14-tracker task repurposed (boundary-maintenance: re-opens only if a consumer needs stdio-without-process-semantics — which would need its own ADR, or if the alktty/alktunnels boundary needs sharpening). Verified: taskgraph valid (12 tasks, no cycles)
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2.1 KiB
id, name, status, depends_on, scope, risk, impact, level, tags
| id | name | status | depends_on | scope | risk | impact | level | tags | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| architecture/oq-tn-14-tracker | OQ-TN-14 follow-through: unix lands with local v1; stdio stays alktty's | pending | single | trivial | isolated | research |
|
Description
OQ-TN-14 is resolved (open-questions.md, 2026-09-07): unix ships with
the local feature v1 (tunnels/local-socket-halves); stdio is OUT of
scope — a spawned process's stdio is alktty's pipe mode (exit codes +
signals are tty semantics, not tunnel semantics); remote command
execution composes via alktty.
This task stays open as the boundary-maintenance tracker (research level — not implementation work). It re-opens the question only if a concrete consumer demonstrates the resolved posture is wrong:
- A consumer needs stdio tunneling with NO process semantics (no exit
code, no signals) — e.g. piping an already-running long-lived
process's existing stdio. That is a different resource shape (the
pipe IS the resource, no dial); it would need its own ADR, not a
silent addition to
local. - A consumer reports confusion about when to use alktunnels vs alktty for a stdio-like flow — the composition boundary in OQ-TN-14 needs sharpening in the docs, not code.
If neither arrives, this task closes with the implementation phase.
Work
- Re-read OQ-TN-14 + alktty's
tty-local.md§pipe mode at triage; confirm the boundary held (no stdio-shaped resource got registered as a tunnel resource).
Verification
- Tracked (this file existing and being reviewed at triage time IS the tracking mechanism — no code or doc change is expected unless a boundary condition above arrives)
Out of scope
- Implementing stdio bridging (would need its own ADR per the conditions above)
References
- docs/architecture/open-questions.md OQ-TN-14 (the resolution)
- alktty
docs/architecture/tty-local.md§pipe mode (the owner of process stdio) - docs/sdd_process.md §Deferred OQs and the blocker-task half
Notes
Agent fills during implementation.
Summary
Agent fills this on completion.