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The windowed budget is confirmed for the failure it was written against and not for the general claim: a single-pass window reads 0% for CB-WP-0008 against 50% lifetime, but the trailing-3 window reads 45% against 50%, inside the refutation band. The prediction was written before the window size was chosen and did not say which comparison it meant. Both readings are on record and whether 3 is the right window is carried as open. gate-review's first run: 9 gates, 0 due, 2 silent. The silent two are the chaos roll and gate-review itself, both with dates. A registry where everything looked productive would have been one written to look good. D4 holds per pass, not per task: three of four tasks shipped a command, and the two that did not are the spec change that makes the commands normative and the evidence file that checks them. Cost is the honest part. This pass cashed out three commands and ran at $0.177/response — cheaper than every previous meta pass (0.228, 0.298, 0.362) and still 1.4x the product pass at 0.123. Partial support for D4, not vindication. Context breached both shape targets because the pass ran on an already-long session; reported, not gated. Meta reads 45% of the trailing three against a soft 25%. Nothing was displaced, but the number is over the line and the next pass should be product. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
147 lines
6 KiB
Markdown
147 lines
6 KiB
Markdown
---
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id: CB-WP-0009
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kind: meta
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title: "Make control gates experimental: window them, review them, cash them out"
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status: done
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authorized_above_budget: "maintainer, 2026-08-01 — 'improve our policies where it seems promising; we will experiment our way to sensible task- and context-specific control and review gates'. Meta read 59% at the time."
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state_hub_workstream_id: "98c0af4a-415c-4cf5-92d0-a722eb70cb90"
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---
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# Purpose
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[ADR-0006](../decisions/ADR-0006-adaptive-control-gates.md) (tier M,
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survey merged into the ADR from [CB-EV-0007](../evidence/CB-EV-0007-stage-0.md)
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§3 and §5; chaos d4=3, no override, declaration 4 of 12).
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Six passes produced five control mechanisms and no way to retire any of
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them. CB-EV-0007 found three defects in how gates are *designed*:
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1. the meta budget cannot see the pass it governs — the same cumulative
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defect CB-WP-0007 T01 had just fixed for session shape, reintroduced
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two tasks later by the same hand;
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2. it blocks its own repair, which is the trap CB-RES-0005 §4 named and
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rejected for session shape and then got built anyway;
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3. nothing retires a gate.
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This pass is **`kind: meta` and above the budget line**, on explicit
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maintainer authorization recorded in the frontmatter — the first use of
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ADR-0006 D2, and a deliberate exercise of it.
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Per **D4**, every task here ships something runnable. A task that ends in
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prose has not delivered.
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## Task: the meta budget measures the pass it governs
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```task
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id: CB-WP-0009-T01
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status: done
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priority: high
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state_hub_task_id: "c6eefacd-5bb9-4640-8356-12e8112bcf11"
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```
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ADR-0006 **D1**. `make status` reports the meta share **for the current
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pass** — the window since the active workplan's first commit — and keeps
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the cumulative figure labelled *history*, exactly as `cb-cost`'s session
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shape block does since CB-WP-0007 T01.
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The instrument-repair exemption (**D2**) is what makes this task legal to
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open at 59%, so the task must also *state* the exemption where the budget
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prints, or the next reader will re-derive the same standoff.
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**Predicted:** the windowed share for CB-WP-0008 reads at or near 0% —
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it was a pure product pass — against 61% cumulative.
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**Refuted if** the two land within 20% of each other, in which case D1 is
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wrong and the machinery should be deleted rather than kept.
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**Done 2026-08-01.** `cb-cost.pass_costs` buckets by pass window in one
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read of the transcripts; `make status` reports a trailing 3-pass share
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with the per-pass breakdown and the exemption. First reading **36% over
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the last 3 passes** against **49% lifetime** — CB-WP-0008 alone reads 0%.
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## Task: `gates.toml` and `make gate-review`
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```task
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id: CB-WP-0009-T02
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status: done
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priority: high
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state_hub_task_id: "0fb6cfaf-9304-481a-a96f-1f0150f4d81d"
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```
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ADR-0006 **D3**. A registry of every standing control gate: what it
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checks, what it has caught (with pointers), `review_by`, and **what would
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retire it**. `make gate-review` reports what is overdue and what has
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caught nothing.
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Seed it with the mechanisms that exist today — the cost budget, the
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shape budget, mutation coverage, the DFD fact gate, the meta budget, the
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chaos roll, the kernel spec→code gate, and `gate-review` itself, which is
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not exempt from its own rule.
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**The positive control this needs:** a registry that silently drifts
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behind the Makefile is worse than none, so `loop-lint` gains a check that
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every gate target has an entry and every entry names a real target. Its
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own self-test must fail when an entry is removed.
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**Done 2026-08-01.** `gates.toml` (9 gates), `make gate-review`, and a
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`loop-lint` check in both directions — an unclassified `make all`
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dependency and an entry naming a target the Makefile lacks each produce
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a finding, both pinned by self-tests. First run: **0 due, 2 silent**
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(the chaos roll and `gate-review` itself).
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## Task: InnerLoop v1.6
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```task
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id: CB-WP-0009-T03
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status: done
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priority: medium
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state_hub_task_id: "0b1b33ac-8046-4b34-b287-7b32755d964a"
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```
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Fold **D2**, **D4** and **D5** into `specs/InnerLoop.md`:
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- the breach-is-a-signal wording and the two exemptions (instrument
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repair; recorded maintainer authorization);
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- the cash-out rule, with its refutation condition;
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- the tier trigger for changes to the loop's own operation, closing the
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gap CB-RES-0005 §6 opened and this ADR's own tier declaration used.
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`InnerLoop.md` is at its 400-line loadability limit, so this task
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**displaces** as much as it adds: the chaos-roll rationale and the v1.1
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→ v1.4 change log move to `InnerLoopReference.md`, leaving the rule and a
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pointer. Loadability is itself a gate; growing the file to fit a rule
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about gates would be the joke writing itself.
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**Done 2026-08-01.** v1.6 in `specs/InnerLoop.md`, **386 lines** — the
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chaos-roll calibration rationale and the v1.0–v1.3 change log moved to
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`specs/InnerLoopReference.md`, so the file came in *smaller* than it
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started at 399.
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## Task: control loop — did the changes fire?
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```task
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id: CB-WP-0009-T04
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status: done
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priority: high
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state_hub_task_id: "e06f57fc-147f-4cba-b398-0db6b060381f"
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```
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Commit `evidence/CB-EV-0008-adaptive-gates.md`. Four questions, all
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answered from output, not argument:
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1. **Does the windowed meta share differ from cumulative?** Against
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T01's prediction; refuted within 20%.
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2. **What does `gate-review` say on its first run?** A registry where
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every gate is current and every gate has caught something is a
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registry that was written to look good — say which entries are
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uncomfortable.
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3. **Did D4 hold for this pass?** Three of four tasks here ship a
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command; T03 is prose. State whether the rule survives its own first
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pass or needs the exception written down.
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4. **Cost**, against the 0.123–0.362 per-response range, and the meta
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share this pass itself consumed — reported under the rule it wrote.
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**Done 2026-08-01.** [CB-EV-0008](../evidence/CB-EV-0008-adaptive-gates.md).
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The pass ran at **$0.177/response** — cheaper than every previous meta
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pass and still 1.4× the product pass, which is partial support for D4 and
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is reported as such. Meta share reads **45% over the trailing three**,
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over the line; the next pass should be product.
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