Remove OpenAI, use z.ai for OpenClaw

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

modules/openclaw-config.json

@@ -25,7 +25,7 @@
   "agents": {
     "defaults": {
       "model": {
-        "primary": "openai/gemini-3.1-pro-high"
+        "primary": "zai/gemini-2.5-pro"
       },
       "memorySearch": {
         "provider": "openai",
@@ -54,22 +54,14 @@
   "models": {
     "mode": "merge",
     "providers": {
-      "openai": {
-        "baseUrl": "http://localhost:8045/v1/chat/completions",
-        "apiKey": "${OPENAI_API_KEY}",
+      "zai": {
+        "baseUrl": "https://api.z.ai/v1",
+        "apiKey": "${ZAI_API_KEY}",
         "api": "openai",
         "models": [
           {
-            "id": "gemini-3.1-pro-high",
-            "name": "Gemini 3.1 Pro High",
-            "reasoning": true,
-            "contextWindow": 1000000,
-            "maxTokens": 65536
-          },
-          {
-            "id": "claude-opus-4-6-thinking",
-            "name": "Claude Opus 4.6 Thinking",
-            "reasoning": true,
+            "id": "gemini-2.5-pro",
+            "name": "Gemini 2.5 Pro",
             "contextWindow": 1000000,
             "maxTokens": 65536
           }