Adopt the interim review regime for material runtime decisions

.github/pull_request_template.md

@@ -0,0 +1,5 @@
+<!-- Required on every pull request. `none` appears alone; otherwise list every category that
+applies (public-surface, documented-claim, conformance, security, dependency), then
+`; review: <link>` to the cross-vendor review record on this PR.
+See docs/adr/README.md § Review of material decisions. -->
+Material-decision impact: none

CONTRIBUTING.md

@@ -15,6 +15,10 @@ env GO111MODULE=on CGO_ENABLED=0 go build -trimpath ./cmd/judgment-pack
 Changes should include focused tests for human and JSON output, exit status, input limits, and
 adversarial behavior. Never add a runtime fetch of mutable specification branches.
 
+Every pull request carries a one-line `Material-decision impact:` declaration, and material
+decisions require the recorded cross-vendor review described in
+[docs/adr/README.md](docs/adr/README.md#review-of-material-decisions).
+
 Material command or output changes should first describe compatibility, migration, automation,
 security, privacy, and authority consequences in an issue. Release version increments and
 prereleases follow [VERSIONING.md](VERSIONING.md).

docs/adr/README.md

@@ -24,6 +24,69 @@ when** it became that way. architecture.md links out to the relevant ADR rather
 3. On merge, set `status: accepted`. ADRs are immutable once accepted: a later change is a **new**
    ADR that supersedes the old one (which is then marked `superseded by NNNN`), never an edit.
 
+## Review of material decisions
+
+A **material** decision in this runtime follows the interim review regime recorded in the
+specification repository's
+[`GOVERNANCE.md`](https://github.com/Judgment-Pack/judgment-pack-spec/blob/main/GOVERNANCE.md#interim-review-regime)
+and designed in
+[RFC 0009](https://github.com/Judgment-Pack/judgment-pack-spec/blob/main/rfcs/0009-interim-review-regime.md).
+A decision is material when it changes a public surface, a documented claim, conformance-relevant
+behavior, the security posture, or a dependency boundary. The trigger is the decision, not the
+paperwork: a material decision made without an ADR is still material, and skipping the ADR does not
+skip the review.
+
+Such a decision requires a recorded adversarial review by a model from a **different vendor** than
+any model that assisted the drafting, with a written maintainer disposition for each finding, on the
+pull request that makes the decision. The record states the commit SHA that was reviewed. A material
+change after the reviewed SHA requires a fresh review, with one exception mirrored from the regime:
+a change that implements a dispositioned finding of a review already recorded on the same pull
+request is covered by that finding's disposition. *Vendor* means the organization that controls the model's
+weights and training — the developer, not the API host and not a reseller; hosted copies of the same
+model share lineage and count as the same vendor. *Assisted the drafting* means generated or revised
+text that survives in the merged artifact, or planning, analysis, structure, or design choices
+supplied by a model and relied on to produce it; paraphrase does not launder assistance, so a model
+that shaped the outline or settled a design question assisted the drafting even when none of its
+sentences survive. Applying an accepted finding in one's own words does not make the reviewer a
+drafter, and adopting reviewer-generated text verbatim under an accepted finding does not
+retroactively invalidate the review that produced it — no further review is required on that
+account — but the record says where each such adoption happened. ADRs are written
+after the decision and are immutable once accepted, so the review attaches to the pull request, not
+to the ADR text.
+
+The review obligation applies to the pull request that introduces this section and every later
+pull request that makes a material decision, including one that supersedes an existing ADR.
+Beginning with the introducing pull request, every pull request — material or not — carries the
+declaration below. "Later" is determined by commit ancestry from the commit introducing this
+section, not by a calendar date. The specification repository's `GOVERNANCE.md` governs only that
+repository; this section is what places this runtime under the obligation.
+
+Every pull request in this repository states its impact in the description, on one line:
+
+```
+Material-decision impact: none
+Material-decision impact: <category>[, <category>...]; review: <link to the review record on this PR>
+```
+
+Categories: `public-surface`, `documented-claim`, `conformance`, `security`, `dependency`. `none`
+appears alone; otherwise list every category that applies, comma-separated, followed by `review:`
+and a permanent link (or links) to review records covering every listed decision. A test-only or
+behavior-preserving change is `none` unless it changes what conformance checking accepts, which is
+`conformance`. A routine dependency version bump is `none`; a bump that fixes a vulnerability is
+`security`; adding, removing, or replacing a dependency is `dependency`. An automated pull request
+(dependency bots) gets its declaration added by the maintainer before merge. `none` is a claim, not
+a formality: it is the author classifying their own change, and it is wrong whenever the change
+turns out to be material.
+
+Materiality is classified by the maintainer, who is also the author — the weak point of this
+arrangement, stated rather than papered over. The declaration does not fix that; a checkbox its own
+author ticks measures the author's care, not the change. What it does is make silence a policy
+violation: when the rule is followed, the classification is explicit, dated, recorded on the pull
+request with the reviewed SHA, and contestable there — and omitting the ADR and the review no
+longer omits the classification with them. Model review
+substitutes for review breadth while the project has a single maintainer; it is not decision
+authority, and following it confers no conformance status on anything.
+
 ## Index
 
 | #                                                        | Decision                                                                        | Status   |