docs: mark K1 resolved in decision log

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

DECISIONS-LOG.md

@@ -41,7 +41,7 @@ need the operator are called out.
 ## KNOWN ISSUES to fix before Phase-2 un-suspend (logged, not yet fixed)
 | # | Issue | Impact | Fix |
 |---|---|---|---|
-| K1 | **Substitution-var case mismatch**: components use `${UPPERCASE}` but `clusters/base/cluster-vars.yaml` keys are lowercase; Flux substituteFrom is case-sensitive → won't resolve | platform HelmReleases get literal `${...}` values on reconcile | Rename cluster-vars keys to UPPERCASE + update dev/prod overlay patch paths (clusters/) |
+| K1 | ~~Substitution-var case mismatch (UPPERCASE refs vs lowercase cluster-vars keys)~~ | — | ✅ **FIXED**: uppercased cluster-vars keys + dev/prod overlay paths; all refs resolve; builds green |
 | K2 | Conformance worker **failed (session limit)** mid-task; left partial L2 tests (default-deny, deny-undeclared, data-survival) + incomplete `run.sh --requirements×--layer` work | L2 tests partial, not verified runnable | Re-dispatch to finish run.sh flag intersection + validate the tests |
 | K3 | `bootstrap/gitea/bootstrap-gitea.sh` used a host bind-mount → rootless-podman perms broke app.ini | initial Gitea start failed | FIXED: switched to a named volume |