docs(r1-briefs): working-state refresh — testgen/surface/selfhosting post-2026-04-24 merge wave

[briansrls]

Opened from session-dashboard for session zesty-bear-812.

[briansrls]

PM review — docs-only working-state refresh across three manager briefs.

Verified

• All 13 claimed-merged PRs confirmed merged (Surface T-Sub: add sub_match_over_user_sum gate #702, feat(v3): DB-11 type alias RHS where (parse + lower) #703, sub charclass #693, docs(roadmap): CharClass phase-1 closure + Class 5 Gap 3 ledger row (director, post-#693 escalation) #706, feat(emit-rust): emit_rust_fixtures_rustc_green gate test #694, T-PB-A: retire lens_idempotency wrapper #699, T-PB-A: retire lens_parallelism wrapper #715, T-PB-A: remove lens_parallelism compatibility alias #724, [codex] retire lower pass-through scaffold #729, [codex] retire infer payload span shim #730, T-PB-A-E #731, T-PB-A-F #732, feat(v3): AlgebraicLaw runner + lens_composition_associative gate (#716) #728).
• In-review pointers confirmed open: T emit generic bounds #676 (emit_generic_bounds), feat(v3): dispatch LensOutputEquals in test runner (lens output is queryable data) #717 (lens_output_is_queryable).
• Cross-target PRs cited in T-Emit progress verified merged: Python operator-realization parity #691 (Python operator parity), feat(emit): implement Behavior::Loop emission for Python and Go #692 (Behavior::Loop for Py+Go).
• Current non-test SG-0 floor is 34; "≤5 irreducible-shim target not yet reached" is accurate.
• No duplication with current main; insertions are clean prepends to decisions logs.

Cross-manager signals (why this clears brief-PR-cadence)

• T-PB-A reduction wave → SG-0 non-test / SG-6 lens-regen ratchets shrinking.
• T-LensAPI near-done: AlgebraicLaw runner + lens_composition_associative closed via feat(v3): AlgebraicLaw runner + lens_composition_associative gate (#716) #728; only lens_output_is_queryable_data (feat(v3): dispatch LensOutputEquals in test runner (lens output is queryable data) #717) still open.
• CharClass phase-1 blocked on M1(2.8) class-5 gap . #3 — surface-manager advertisement of M1 blocker.
• Surface T-Emit omni substrate progressing (Python operator-realization parity #691/feat(emit): implement Behavior::Loop emission for Python and Go #692) even while the named gate stays open.

Suggestions (non-blocking)

1. Surface brief — update Cross-manager notifications queued section. The current text reads:

(none yet — coordinate with Self-hosting when T-Sub first gate lands; coordinate with Testgen when T-Emit emit_omni_demo_fixtures_green predicate shape needs defining)

First T-Sub gate (sub_match_over_user_sum) has now landed per #702. Either retire that clause or flip it to an active "notify Self-hosting: first T-Sub gate landed (#702)" entry so the section doesn't advertise a conditional that has already fired.

2. PR title. Repo convention for working-state-refresh PRs (see #700, #720, #723) uses descriptive docs(<brief>): working-state refresh — ... form. Consider retitling before marking ready for review so the squash-merge commit lands with a searchable subject.

No invariant violations; ready to mark for review once (1) is addressed or consciously deferred.

[briansrls]

Review metadata

• Provider / model: claude / claude-opus-4-7
• Commit: 4e606603 · Trigger: schedule
• Thinking: 9.7s wall

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Docs-only change updating status trackers in three brief files. No code, no substrate.

Verdict: APPROVE — diff is docs-only (status/decision-log updates across three r1-*-manager briefs). No invariant, modeling, coding, or testing rule applies to working-state bookkeeping. Dates, PR refs, and checkbox transitions look internally consistent.

[briansrls]

Review metadata

• Provider / model: codex / codex-default
• Commit: 4e606603 · Trigger: schedule
• Thinking: 140s wall

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Verdict: APPROVE — docs-only refresh, and the changed lines keep closed vs pending work clearly separated. No concrete violations of the pinned invariants, modeling discipline, coding, or testing guidance observed in this diff.