Fix gitea-mcp env: use GITEA_ACCESS_TOKEN, not GITEA_TOKEN

The gitea-mcp server expects GITEA_ACCESS_TOKEN environment variable,
not GITEA_TOKEN. Without the correct env var, every API call to the
backend Gitea returns "token is required" — the MCP server can't
authenticate to fetch user info, repos, etc.

Also added GITEA_HOST env var as a backup to the --host flag.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

deploy/k8s/gitea-mcp-deployment.yaml

@@ -35,11 +35,13 @@ spec:
             - "--port"
             - "8080"
           env:
-            - name: GITEA_TOKEN
+            - name: GITEA_ACCESS_TOKEN
               valueFrom:
                 secretKeyRef:
                   name: gitea-mcp-secrets
                   key: GITEA_TOKEN
+            - name: GITEA_HOST
+              value: "http://185.19.29.94"
           ports:
             - containerPort: 8080
               name: http