Add shared opencode gateway MCP config (gitea)

mcp-config/opencode.gateway.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "mcp": {
+    "gitea": {
+      "type": "remote",
+      "url": "https://llm.covert-gpt.com/mcp/gitea",
+      "enabled": true,
+      "headers": {
+        "Authorization": "Bearer {env:LITELLM_KEY}"
+      }
+    }
+  }
+}