fix(ci-base): correct Gitea namespace in git insteadOf redirect

Gitea lives in the 'git' namespace on Legion k3s, not 'gitea'.
The system gitconfig redirect must use gitea.git.svc.cluster.local:3000.
Update when Gitea migrates to GKE (namespace will be 'gitea' there).

servers/legion/k8s/gitea-runner/Dockerfile

@@ -105,7 +105,7 @@ RUN curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg \
 # (which sets the reverse redirect + CF Access headers). The system-level rule
 # here is a safe baseline; the init script wins because it runs after.
 RUN git config --system \
-    url."http://gitea.gitea.svc.cluster.local:3000/".insteadOf \
+    url."http://gitea.git.svc.cluster.local:3000/".insteadOf \
     "https://git.neuralplatform.ai/"
 
 COPY git-cf-access-init.sh /usr/local/bin/git-cf-access-init.sh