Revert "fix(ci): point Gitea Actions runners at public instance URL"

This reverts commit 6f5d041440.

servers/legion/k8s/gitea-runner/deployment.yaml

@@ -8,7 +8,7 @@ metadata:
   labels:
     app: gitea-runner
   annotations:
-    config-version: "2026-05-04-public-instance-url"
+    config-version: "2026-05-04-docker-sock-fix"
 spec:
   replicas: 1
   selector:
@@ -19,7 +19,7 @@ spec:
       labels:
         app: gitea-runner
       annotations:
-        config-version: "2026-05-04-public-instance-url"
+        config-version: "2026-05-04-docker-sock-fix"
     spec:
       securityContext:
         runAsNonRoot: false
@@ -92,7 +92,7 @@ metadata:
   labels:
     app: neuron-technologies-runner
   annotations:
-    config-version: "2026-05-04-public-instance-url"
+    config-version: "2026-05-04-docker-sock-fix"
 spec:
   replicas: 2
   selector:
@@ -103,7 +103,7 @@ spec:
       labels:
         app: neuron-technologies-runner
       annotations:
-        config-version: "2026-05-04-public-instance-url"
+        config-version: "2026-05-04-docker-sock-fix"
     spec:
       securityContext:
         runAsNonRoot: false

servers/legion/k8s/gitea-runner/external-secrets.yaml

@@ -17,13 +17,7 @@ spec:
     creationPolicy: Owner
     template:
       data:
-        # Public URL — the in-cluster name (gitea.git.svc.cluster.local) is
-        # not resolvable from build containers running with `network: host`,
-        # which causes `git fetch` to fail at the very first checkout step.
-        # The runner polls Gitea over Cloudflare; the latency cost is small
-        # and the build container's clone URL is derived from this instance,
-        # so it has to be a name the build container can resolve.
-        GITEA_INSTANCE_URL: "https://git.neuralplatform.ai"
+        GITEA_INSTANCE_URL: "http://gitea.git.svc.cluster.local:3000"
         GITEA_RUNNER_REGISTRATION_TOKEN: "{{ .runner_token }}"
   data:
     - secretKey: runner_token
@@ -47,8 +41,7 @@ spec:
     creationPolicy: Owner
     template:
       data:
-        # Public URL — see commentary on the gitea-runner-secret above.
-        GITEA_INSTANCE_URL: "https://git.neuralplatform.ai"
+        GITEA_INSTANCE_URL: "http://gitea.git.svc.cluster.local:3000"
         GITEA_RUNNER_REGISTRATION_TOKEN: "{{ .runner_token }}"
   data:
     - secretKey: runner_token