diff --git a/docs/archive/provenance/crg/CRG-DETECTOR-VALIDATION-2026-04-18.md b/docs/archive/provenance/crg/CRG-DETECTOR-VALIDATION-2026-04-18.md
index ef2fdf76..93b5ce5f 100644
--- a/docs/archive/provenance/crg/CRG-DETECTOR-VALIDATION-2026-04-18.md
+++ b/docs/archive/provenance/crg/CRG-DETECTOR-VALIDATION-2026-04-18.md
@@ -3,11 +3,11 @@
 Validated Bucket-A self-consistency assumptions against current `STATE.a2ml` values for the 17 repos listed in `CRG-BULK-TRIAGE-2026-04-18.md`.
 
 ## Result Summary
-- 15/17 still match auto-demotion conditions (including 3 repos with missing `completion-percentage`).
+- 15/17 still match auto-demotion conditions (including 3 repos with missing `overall-completion`).
 - 2/17 no longer match (stale triage values):
   - `developer-ecosystem/valence-shell` (`version=0.9.0`, `completion=74`)
   - `007-lang` (`version=0.1.0`, `completion=55`)
-- Rule updates applied in `HYP-S005` to treat missing `completion-percentage` as a high-severity self-consistency failure for `C/B/A` claims.
+- Rule updates applied in `HYP-S005` to treat missing `overall-completion` as a high-severity self-consistency failure for `C/B/A` claims.
 
 ## Validation Table
 | Repo | version | completion | dogfooding-status | Bucket-A match now |
@@ -23,9 +23,9 @@ Validated Bucket-A self-consistency assumptions against current `STATE.a2ml` val
 | verification-ecosystem/rrecord-verity | 0.1.0 | 35 | absent | yes |
 | developer-ecosystem/rescript-ecosystem/idaptik-rescript13-staging | 0.1.0 | 0 | absent | yes |
 | verification-ecosystem/tropical-resource-typing | 0.1.0 | 30 | absent | yes |
-| verification-ecosystem/a2ml-showcase | 0.1.0 | absent | absent | yes (missing completion) |
-| developer-ecosystem/nextgen-languages/anvomidav | 0.1.0 | absent | absent | yes (missing completion) |
+| verification-ecosystem/a2ml-showcase | 0.1.0 | absent | absent | yes (missing overall-completion) |
+| developer-ecosystem/nextgen-languages/anvomidav | 0.1.0 | absent | absent | yes (missing overall-completion) |
 | developer-ecosystem | 0.1.0 | 45 | absent | yes |
-| verification-ecosystem/k9-ecosystem/k9-showcase | 0.1.0 | absent | absent | yes (missing completion) |
+| verification-ecosystem/k9-ecosystem/k9-showcase | 0.1.0 | absent | absent | yes (missing overall-completion) |
 | developer-ecosystem/valence-shell | 0.9.0 | 74 | absent | no |
 | 007-lang | 0.1.0 | 55 | absent | no |
diff --git a/hypatia-rules/crg-overclaim-detector.a2ml b/hypatia-rules/crg-overclaim-detector.a2ml
index 9d9e2f69..ff35873a 100644
--- a/hypatia-rules/crg-overclaim-detector.a2ml
+++ b/hypatia-rules/crg-overclaim-detector.a2ml
@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: PMPL-1.0-or-later
+# SPDX-License-Identifier: MPL-2.0
 # HYP-S005 — CRG Overclaim Detector
 # Flags repos self-declaring a CRG grade that lacks the evidence artefacts
 # required by CRG v2.0 (STRICT). Sibling rule to HYP-S001 (demotion detector):
@@ -162,7 +162,11 @@ sections:
 #
 # Contradiction rule: a repo cannot self-consistently claim C (or higher) if
 # its own metadata says it is <50% complete and pre-0.5.0. Either the grade
-# is wrong, the version is wrong, or the completion-percentage is wrong.
+# is wrong, the version is wrong, or the completion score is wrong.
+#
+# Canonical field: `overall-completion` in STATE.a2ml. A legacy
+# `completion-percentage` field may still appear in older snapshots, but it is
+# not the primary schema key and must not be required for modern repos.
 # The audit convention is: trust version + completion, demote the grade.
 #
 # This fires BEFORE the file-tree evidence checks; if it fires, a full audit
@@ -173,8 +177,8 @@ grade_ge_c_but_early_stage:
     parse_state.crg-grade IN {"C", "B", "A"}
     AND parse_state.version < "0.5.0"
     AND (
-      parse_state.completion-percentage < 50
-      OR parse_state.completion-percentage IS empty_or_absent
+      parse_state.overall-completion < 50
+      OR parse_state.overall-completion IS empty_or_absent
     )
     AND parse_state.dogfooding-status IS empty_or_absent
   severity: high
@@ -194,13 +198,13 @@ grade_ge_c_but_missing_self_consistency_inputs:
     parse_state.crg-grade IN {"C", "B", "A"}
     AND (
       parse_state.version IS empty_or_absent
-      OR parse_state.completion-percentage IS empty_or_absent
+      OR parse_state.overall-completion IS empty_or_absent
     )
   severity: high
   finding_kind: self-inconsistent-claim
   message: >-
     {component} claims {declared} but STATE.a2ml is missing version and/or
-    completion-percentage. The CRG self-consistency precheck cannot run
+    overall-completion. The CRG self-consistency precheck cannot run
     without these keys — treat this as a structural overclaim until state
     metadata is completed.