fix(scheduler): retry OpenCode after coverage blockers clear

CHANGELOG.md

@@ -60,6 +60,13 @@ Semantic Versioning where the repository publishes a release.
 
 ### Fixed
 
+- Re-dispatch an exact-head OpenCode review after its coverage-only blocker is
+  cleared, selecting the newest coverage rerun by timestamp across workflow
+  names and ignoring only the superseded `opencode-review` failure and central
+  required-workflow placeholder. Conflicting heads and failed sibling jobs in an
+  OpenCode workflow remain fail-closed alongside unresolved threads, Strix,
+  coverage, and unrelated failed checks.
+
 - Publish only the sanitized cumulative Strix report tree, avoiding a later
   copy of relative scanner output that could reintroduce known internal warning
   text into uploaded security evidence.