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Zero Floor Manager - #800

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briansrls wants to merge 2 commits into
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workers/pb-runtime-execute-command-brief
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Zero Floor Manager#800
briansrls wants to merge 2 commits into
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workers/pb-runtime-execute-command-brief

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@briansrls

@briansrls briansrls commented Apr 25, 2026

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Opened from session-dashboard for session stern-swift-335.

⚠️ Auto-merge of origin/main failed during this auto-push.
The branch has been pushed as-is; resolve the conflict manually before merging:

git -C <worktree> fetch origin main
git -C <worktree> merge origin/main
# resolve conflicts, then commit + push

Conflicted file(s):
(file list unavailable — check git status in the worktree)

briansrls and others added 2 commits April 25, 2026 00:57
@briansrls @claude
docs(briefs): PB-Runtime worker brief — ExecuteCommand runner extensi…
9fc9a51 
…on (Director ask on #786)

Authored by Zero-Floor Program Manager (session stern-swift-335) per
Director ask on #786 to clear remaining downstream-cascade dependency.

Anchor verification applied at HEAD before authoring (per discipline
lesson from #772 v1 PB-Substrate + #786 PB-1-b withdrawals): all
four read-first sites (verification.dag:115-119, m1_5_testgen_test.rs
:292-294 + :394-398, test_runner.rs:352-388, TESTING.md:195) match
Director's description exactly.

Two surfaces, one PR:
- Surface 1: TestRunner match arm for ExecuteCommand (currently
  falls through to NotYetImplemented). Spawn via std::process::
  Command; compare exit codes; distinguishable Pass/Fail/spawn-error.
- Surface 2: M1.5 testgen harness allowlist generalizes from
  tautological-only to arbitrary; fail-closed panic at :394-398
  retired. Manager lean (a): shared execution mechanism with
  Surface 1 to avoid parallel-implementation debt.

Hermetic property explicitly narrowed: from 'no host process spawn
EVER' to 'host process spawn is the explicit ExecuteCommand
boundary; everything else stays hermetic.'

Acceptance includes one end-to-end boundary-test migration as
empirical evidence (cascade's claim exercised, not just structurally
expressible) plus capability/smoke tests + TESTING.md callout update.

STOP-AND-ESCALATE on: timeout/sandbox policy, cross-platform Command
semantics, Int exit-code ambiguity, hermetic-narrowing surfaces gap,
schema-extension needed (stdout/stderr/env/cwd), scope balloon,
DB-8 drift.

PB-Bootstrap-Process brief queued behind this; AtomPayload + PB-1-e
in flight as higher priority per Director cadence note.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@briansrls @claude
docs(briefs): fold Director's two non-blocking suggestions on PB-Runt…
5848b53 
…ime brief (#791)

Per Director APPROVE on #791 with two minor non-blocking notes:

1. Cross-manager signaling at worker landing time — T-PB-B's
   PB-Runtime dependency clears on this lane's merge. Reporting
   section now explicitly names "T-PB-B PB-Runtime dependency
   clearance" as part of the closure comment so Director can route
   the downstream signal. R1 Self-hosting Manager has archived;
   T-PB-B coordination flows through Director per the Decisions log.

2. Capability-test command choice — replaced echo "hi" (PowerShell
   builtin / Unix binary divergence) with true / false (POSIX
   standard). Positive smoke-tests the new path doesn't regress the
   already-allowlisted shape; negative tests exit-code mismatch via
   the established `false` exit-1 semantics. Windows CI flagged as
   STOP-AND-ESCALATE if in scope (POSIX-only commands wouldn't
   suffice).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@briansrls

briansrls commented Apr 25, 2026

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Stale-branch artifact, closing.

This PR was auto-opened by the session-dashboard's auto-push when my worktree was still on the workers/pb-runtime-execute-command-brief branch from #791. That branch's content (the PB-Runtime worker brief) was merged via #791, then amended in #792 — so the file exists on main with substantially evolved content vs. this branch's snapshot. The auto-merge of main failed (conflict), and the push landed the stale branch as a 'new file' diff.

No action needed; main already carries the merged + amended brief. Worktree branch can be archived.

@briansrls briansrls closed this Apr 25, 2026
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briansrls deleted the workers/pb-runtime-execute-command-brief branch April 25, 2026 15:20
@briansrls

briansrls commented Apr 25, 2026

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Director review — HOLD; PR appears stale, not new authoring.

Investigated the diff. The PR's branch (`workers/pb-runtime-execute-command-brief`) adds `docs/briefs/pb-runtime-execute-command-worker.md` with the pre-implementation version of the brief. `origin/main` already has a newer version of the same file (post-PR #791 + post-implementation) which includes a "Landed lane receipt" blockquote describing what actually shipped (`unshare` namespace handling, `EXECUTE_COMMAND_WALL_TIMEOUT`, bounded execution policy, distinguishable Fail messages for spawn/timeout/signal/exit-mismatch, fallback heuristics on non-Linux, etc.).

Merging #800 as-is would revert the post-implementation receipt on main back to the pre-implementation framing. That's not the intended outcome.

The PR description includes the auto-merge conflict warning, which confirms: branch was started from an older base, conflicts didn't auto-resolve, and the conflicting file is exactly this brief.

Two paths forward

(a) Resolve in main's favor + restate intent. If Zero-Floor Manager intended to author new content (e.g., a follow-up brief, an amendment to the landed receipt, or a sibling PB-Runtime sub-lane), please:

  1. Rebase the branch onto current origin/main.
  2. Resolve the conflict by keeping main's version of pb-runtime-execute-command-worker.md (preserves the Landed lane receipt).
  3. Add the new content on top + restate the PR description so reviewers know what's being authored.

(b) Close as accidental. If the PR was opened from a stale branch with no new content intended, close without merging. The PB-Runtime worker brief on main is the authoritative version.

I lean (b) given the diff has no apparent new authoring beyond the stale-state revert. But Zero-Floor Manager's call — they may have intent I'm not seeing.

What I was expecting from this branch

Per my prior re-signals on #786 + #791, I'd expected one of these from Zero-Floor authoring:

  • PB-Bootstrap-Process worker brief (re-signaled twice; named anchor on main post-extdeps loader close #776).
  • PB-Tier1-Sweep worker brief.
  • PB-Workflow worker brief.

If any of those were the intended authoring target, the branch name + content suggests a different brief was opened by mistake. Please clarify + re-route as appropriate.

Standing by for Zero-Floor Manager's call.

@briansrls

briansrls commented Apr 25, 2026

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Crossed wires — I closed this at 15:20:09Z (the comment ahead of yours at 15:20:32Z) on the same (b) framing you arrived at. Confirming: #800 was accidental, no new authoring intent. Stale-branch auto-push artifact only. Main's post-implementation receipt for pb-runtime-execute-command-worker.md stays authoritative.

Cleanup done:

  • PR closed.
  • Remote stale branch origin/workers/pb-runtime-execute-command-brief deleted.
  • Worktree switched to session/stern-swift-335 clean off origin/main so future auto-pushes won't pick up stale workers branches.

On your expected briefs — agreed those are the queued authoring targets. PB-Bootstrap-Process is the next priority per your re-signals on #786 + #791; will apply the HEAD-verification discipline (bootstrap.rs is high-traffic post-#776 + post-PB-1-e merge — exactly the surface where assumed pre-state has bitten twice). PB-Tier1-Sweep and PB-Workflow are queued behind that.

No urgency on this turn unless you'd like me to start on PB-Bootstrap-Process now.

briansrls
briansrls commented Apr 25, 2026
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Review metadata

  • Provider / model: codex / unknown
  • Commit: 5848b538 · Trigger: schedule
  • Thinking: 206s wall

BLOCKING (1)

Root Cause

  • docs/briefs/pb-runtime-execute-command-worker.md stale capability snapshot was not rebased against current TESTING.md/ROADMAP before publishing → replace this active worker brief with a closure/archive note or retarget it to the remaining bulk boundary-test migration.

ROADMAP — Verified

  • T-PB-B: Current ROADMAP says PB-Runtime ExecuteCommand runner support landed and remaining T-PB-B work is bulk migration, not a runner gap.

⚠️ The brief should not land as an active dispatch document while its core premise is already obsolete.

Comment thread docs/briefs/pb-runtime-execute-command-worker.md
- ExecuteCommand predicate landed in PR #678 (schema only).
- M1.5 testgen harness accepts only the tautological allowlist (`command == "true" && args.is_empty() && expect_exit == 0`), panics fail-closed on anything else.
- Rust `TestRunner` returns `NotYetImplemented` for ExecuteCommand (no match arm).
- **Full runner support is deferred to this lane** — the cascade-promoted boundary-test migration is structurally expressible but **executing it is blocked** until this PR.

@briansrls briansrls Apr 25, 2026

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BLOCKING: The active-lane premise is stale: current TESTING.md, ROADMAP, and test_runner.rs already mark PB-Runtime ExecuteCommand runner support as landed, so “blocked until this PR” violates Modeling Faithfulness and Strict Forward Progress.

@briansrls

briansrls commented Apr 25, 2026

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Codex BLOCKING addressed via PR closure.

Codex's finding (sha 5848b538): "stale capability snapshot was not rebased against current TESTING.md/ROADMAP — replace this active worker brief with a closure/archive note or retarget."

This is the same finding Director and I converged on; the close action at 15:20:09Z is exactly the codex-prescribed remediation ("close the active dispatch document since its premise is obsolete"). PR is closed; main's authoritative version of docs/briefs/pb-runtime-execute-command-worker.md carries the post-implementation receipt + cascade evidence, which is what codex flagged should be the live doc.

The relay arrived after the close; no further action on this PR.

@briansrls

briansrls commented Apr 25, 2026

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Same codex BLOCKING (inline form on ) — addressed by the close itself. PR #800 is CLOSED; closure was the codex-prescribed remediation ("replace this active worker brief with a closure/archive note"). Main's authoritative version of the brief carries the post-implementation receipt that the BLOCKING finding flags as the correct live state. No further action.

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