diff --git a/decisions/decisions.md b/decisions/decisions.md
index eee5a94..7b2c9dd 100644
--- a/decisions/decisions.md
+++ b/decisions/decisions.md
@@ -750,3 +750,38 @@ faster than a hand-maintained table drifted from reality — that is, if generat
 publication decouple. The falsifier is mechanical: a regeneration that changes the
 committed export without any underlying evidence having changed, or an underlying
 change that does not reach the export.
+
+## GH-DEC-2026-007 — The posture/maturity boundary is recomputability, bounded by a criteria-grounding rule
+
+```yaml
+id: GH-DEC-2026-007
+kind: decision
+title: The posture/maturity boundary is recomputability, bounded by a criteria-grounding
+  rule
+status: resolved
+owner: Bernd Worsch
+repo: gate-house
+standard: net-kingdom/canon/standards/security-layer-model_v0.7.md
+source_note: kings-guard/docs/PostureMaturityBoundary.md (KG-DEC-2026-002, KG-COM-0001)
+requested_dispositions:
+- approved
+- revised
+- rejected
+affects:
+- gate-house
+- net-kingdom
+- kings-guard
+- maturity-engine
+- access-engine
+rationale: 'Adopted with one addition. kings-guard is right that volatility describes
+  the two categories without partitioning them, and right that the discriminator is
+  already in §9.5''s determinism clause rather than being a new rule. The addition
+  closes the loophole the test leaves open: recomputability is assessed over the stated
+  criteria, so any judgment can be made to look recomputable by writing a criterion
+  that dereferences it. Criteria must bottom out in evidence about the subject, not
+  in another party''s opinion recorded as evidence. Without that clause the test is
+  satisfiable in form by exactly the inference it exists to exclude.'
+decided_by: Bernd Worsch
+created: '2026-09-06T06:07:34.017316Z'
+updated: '2026-09-06T06:07:34.017316Z'
+```