Point Forgejo runner substrate at in-cluster railiance01 (ADR-004)

Status probe checks k8s runner first; documents retirement of coulombcore
interim host runner.

tools/forgejo-runner-status.sh

@@ -2,7 +2,8 @@
 set -u
 
 FORGEJO_URL="${FORGEJO_URL:-https://forgejo.coulomb.social}"
-RUNNER_HOST="${RUNNER_HOST:-coulombcore}"
+FORGEJO_KUBECONFIG="${FORGEJO_KUBECONFIG:-${HOME}/.kube/config-hosteurope}"
+RUNNER_HOST="${RUNNER_HOST:-}"
 RUNNER_SSH_USER="${RUNNER_SSH_USER:-}"
 RUNNER_SSH_KEY="${RUNNER_SSH_KEY:-}"
 SSH_CONNECT_TIMEOUT="${SSH_CONNECT_TIMEOUT:-5}"
@@ -25,8 +26,16 @@ else
   echo "curl missing; skipping endpoint checks"
 fi
 
-section "Runner host probe"
-if have ssh; then
+section "In-cluster runner (railiance01)"
+if have kubectl && [ -r "${FORGEJO_KUBECONFIG}" ]; then
+  KUBECONFIG="${FORGEJO_KUBECONFIG}" kubectl get deploy,pods,pvc -n forgejo -l app.kubernetes.io/name=forgejo-runner --ignore-not-found 2>/dev/null || true
+  KUBECONFIG="${FORGEJO_KUBECONFIG}" kubectl logs -n forgejo deploy/forgejo-runner -c runner --tail=5 2>/dev/null || true
+else
+  echo "kubectl or kubeconfig missing; skipping in-cluster probe"
+fi
+
+section "Legacy host runner probe (optional)"
+if [ -n "${RUNNER_HOST}" ] && have ssh; then
   ssh_target="${RUNNER_HOST}"
   if [ -n "${RUNNER_SSH_USER}" ]; then ssh_target="${RUNNER_SSH_USER}@${RUNNER_HOST}"; fi
   ssh_args=(-o BatchMode=yes -o ConnectTimeout="${SSH_CONNECT_TIMEOUT}")
@@ -41,6 +50,8 @@ if have ssh; then
     fi
     if [ -f /var/lib/forgejo-runner/.runner ]; then echo "ok: /var/lib/forgejo-runner/.runner present"; fi
   '
+elif [ -n "${RUNNER_HOST}" ]; then
+  echo "ssh missing; skipping legacy host probe"
 else
-  echo "ssh missing; skipping runner host probe"
+  echo "RUNNER_HOST unset; skipping legacy host probe"
 fi