fix(fleet): correct operator documentation validation

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/fleet/FLEET-CONFIG-DOCS-IA-CHECKLIST.md

@@ -83,8 +83,12 @@ recorded in the M5 closure report and linked deferral evidence.
       `mosaic agent` catalog.
 - [x] Migration, quarantine, lifecycle, status, and troubleshooting documentation state that values of
       legacy sensitive keys are never printed.
-- [x] M5 documentation validation verifies links, schema/example validation, and that checklist
-      rows have owner/evidence or an explicit approved-existing deferral.
+- [x] M5 documentation validation verifies required IA paths, local file and heading-fragment links,
+      the canonical roster through the production compiler/resolver, and fenced/canonical-example
+      safety checks.
+- [ ] FCM-M5-001 does not deterministically assert owner/evidence/deferral metadata for every checklist
+      row. Closure and deferral reports provide human-reviewable evidence only; broader assertion
+      coverage remains unclaimed.
 
 ## Held downstream gates