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ADR-0042: Stabilization Gate Closed

Status: Accepted
Date: 2026-07-14
Related: 0026, 0027, stabilization-roadmap S5

Context

Lab Gate froze the Lab/BFF contract. Stabilization Gates S0–S4 closed durability, evidence/safety, thin adapters, and graph/query decisions. S5 is the “don’t touch” checklist so core only reopens for measured blockers.

Decision

  1. Stabilization Gate passed (2026-07-14): S1–S4 exit criteria green; offline go test ./..., Lab smoke, and golden/adversarial suites green; runbooks and additive API changelog published.
  2. Default answer to feature requests that expand domain language: adapter or downstream consumer.
  3. Reopen core only with: measured blocker + superseding ADR + tests.
  4. Section D items in the stabilization roadmap remain frozen-deferred (owner: core steward) until that bar is met.
  5. Consumers integrate via HTTP/pkg/contextkit/pkg/langtestkit only — never internal/.

Consequences

Positive

  • Clear calm period for Lab and product work on a stable core.
  • Prevents casual reopen of graph AST, object-store, OIDC, etc.

Negative

  • Some power features stay consumer-side by design (ADR-0040/0041).

Follow-ups

  • Phase 4 commercial envelope (billing, team OIDC, COW) remains after S5 unless a deployment blocks without them.