docs(briefs): PB-0 cycle 3 redo + cycles 5–6 worker briefs (Director msg_b44f4320)

[briansrls]

Worker attestation

• Title describes the change (not the session id or branch).
• PR body summarises what and why (below).
• Tests run: cargo test -p v3-compiler --test integration sg0_v3_hand_authored_census --locked (ctrl-build remote) — passed (2026-05-14).
• No work-item Closes directive required for this doc-only dispatch (dashboard WIs remain open for workers).
• No commits on this branch are surprises (session Mgr lane + Director follow-up only).
• No secrets / credentials / large binaries staged.

Summary

Adds three PB-0 SG-0 NON_TEST retirement worker briefs for the Director msg_b44f4320 three-parallel dispatch:

1. docs/briefs/r3-pb0-non-test-retirement-worker-cycle3-redo.md — cycle 3 REDO (same eight census paths as the closed Route-back: PB-0 cycle 3 false retirement rollback #3047 attempt), with §5.1 / Track A (a)/(b)/(c) bar, Route-back: PB-0 cycle 3 false retirement rollback #3047 paper-shrink anti-pattern callout, and deferral notes for Gap 13 / R3 Evaluator Mgr — lane through R3 close (re-spawn post --shape flag) #3053 lanes.
2. docs/briefs/r3-pb0-non-test-retirement-worker-cycle5.md — cycle 5 (six paths: cementing_dispatch + five core hosts), including PR PB-0 cycle-2 NON_TEST retirement (msg_84abadad Track A): retire 6 paths — integration_rs_wiring_scan.rs; cementing_dispatch.rs; r3_gate_87_cementing_regen_runner_suites.rs; gunbc_ci.rs; lens_declaration_apply.rs; lens_t_las_carrier.rs — brief docs/briefs/r3-pb0-non-test-retirement-worker-cycle2.md + #3046 consolidation / gate RT1-RT4: model correctness — credential wiring, fail-closed auth, fil… #87 cascade context for cementing_dispatch.rs.
3. docs/briefs/r3-pb0-non-test-retirement-worker-cycle6.md — cycle 6 (DAG four-pack + gunbc_ci + r1c_e_emit_gates), with §0.2 preemptive Gap-tier / program STOP anchors per Director msg_f05c2d68 (feedback_anchor_mgr_lane_synthesis_on_gap_tier_not_session_id).

Test plan

• cargo test -p v3-compiler --test integration sg0_v3_hand_authored_census --locked — green (hand-authored census unchanged by these Markdown files).

[briansrls]

Verification (codex review artifact /api/reviews/11615 — APPROVE)

Re-checked current docs/briefs/ on this branch tip against the cited regions:

• r3-pb0-non-test-retirement-worker-cycle3-redo.md: L17–L19 call out Route-back: PB-0 cycle 3 false retirement rollback #3047 paper-shrink / REGEN_OUTPUTS-only failure mode, Track A (a)/(b)/(c) bar + taxonomy cite, and path-(b) precedent; L44–L46 carry strict ratchet + gate Add node override support for non-transport I/O node mocking #8 closure alignment. Matches the review’s read.
• r3-pb0-non-test-retirement-worker-cycle5.md: L17 taxonomy-queue honesty + §5.1 receipts; L23 PB-0 cycle-2 NON_TEST retirement (msg_84abadad Track A): retire 6 paths — integration_rs_wiring_scan.rs; cementing_dispatch.rs; r3_gate_87_cementing_regen_runner_suites.rs; gunbc_ci.rs; lens_declaration_apply.rs; lens_t_las_carrier.rs — brief docs/briefs/r3-pb0-non-test-retirement-worker-cycle2.md + #3046 / gate RT1-RT4: model correctness — credential wiring, fail-closed auth, fil… #87 cascade note for cementing_dispatch.rs; L48 RT1-RT4: model correctness — credential wiring, fail-closed auth, fil… #87 / CementingDispatchMatchesProjection guard in Read-first. Matches.
• r3-pb0-non-test-retirement-worker-cycle6.md: L17–L18 P5 / path-(b) framing; L36–L47 §0.2 per-path STOP blockers; L71 ties STOP text to §0.2 + Gap-tier vocabulary (not session-id). Matches.

Action: No fix commit — the APPROVE finding is valid and nothing in the diff contradicts PB-0 / P5 / Dispatch-Discipline or weakens gate-#87 cementing obligations.

Merge readiness (Mgr bar from dashboard feedback): mergeStateStatus is CLEAN and CI on the latest push is green, but GitHub reviewDecision is still empty and only one api-review artifact (codex) is on-record here. Per the stated bar (≥2 distinct api-review APPROVE-class signals, with openai-pro preferred as the second weight), I am not squash-merging until a second api-review lands (or branch protection explicitly waives). Ping openai-pro (or second api-review lane) on this PR when available.

— sent from zesty-boar-261

[briansrls]

Verification (claude-opus-4-7 /api/reviews/11623 — APPROVE)

Spot-checked the diff on session/zesty-boar-261 at this PR tip:

• Scope: Only the three Markdown briefs under docs/briefs/; no edits under src/v3/ or other runtime/substrate paths — matches “docs-only, no hand-Rust.”
• Content: Each brief names a disjoint EXPECTED_HAND_AUTHORED_NON_TEST path set, ties rows to Track A (a)/(b)/(c), cites Route-back: PB-0 cycle 3 false retirement rollback #3047 paper-shrink anti-pattern where relevant, carries §5.1 / merge-body receipt language, and preserves STOP / P5 (i–iii) escalation — aligned with INVARIANTS.md dispatch discipline for worker charters.

Action: No fix commit; the review is accurate.

Merge bar (dashboard feedback): This satisfies the second api-review APPROVE alongside the prior codex artifact — two distinct APPROVE-class signals. CI on the latest push is green (fmt, ci, v3, self_host_ratchet). mergeStateStatus CLEAN. Proceeding to squash-merge per Mgr instruction to clear downstream session queue.

— sent from zesty-boar-261