pi models override

pi/.pi/agent/models.json

@@ -43,7 +43,7 @@
     "opencode-go": {
       "baseUrl": "https://opencode.ai/zen/go/v1",
       "api": "openai-completions",
-      "apiKey": "OPENCODE_API_KEY",
+      "apiKey": "$OPENCODE_API_KEY",
       "models": [
         {
           "id": "mimo-v2-pro",
@@ -86,7 +86,7 @@
     "opencode": {
       "baseUrl": "https://opencode.ai/zen/v1",
       "api": "openai-completions",
-      "apiKey": "OPENCODE_API_KEY",
+      "apiKey": "$OPENCODE_API_KEY",
       "models": [
         {
           "id": "big-pickle",
@@ -107,6 +107,19 @@
           "cost": { "input": 0, "output": 0, "cacheRead": 0, "cacheWrite": 0 }
         }
       ]
+    },
+    "deepseek": {
+      "compat": {
+        "thinkingFormat": "deepseek"
+      }
+    },
+    "qw": {
+      "modelOverrides": {
+        "qwen3.8-max": {
+          "contextWindow": 1000000,
+          "maxTokens": 131072
+        }
+      }
     }
   }
 }