fix(inference): prefer main agent model updates

Signed-off-by: Deepak Jain <deepujain@gmail.com>

Author: deepujain

src/lib/actions/inference-set.test.ts

@@ -248,6 +248,7 @@ describe("patchOpenClawInferenceConfig", () => {
           { id: "main", default: true, model: "inference/nvidia/old-model" },
           {
             id: "research",
+            default: true,
             model: "inference/nvidia/secondary-model",
             workspace: "/sandbox/.openclaw/workspace-research",
             agentDir: "/sandbox/.openclaw/agents/research",
@@ -278,6 +279,7 @@ describe("patchOpenClawInferenceConfig", () => {
         { id: "main", default: true, model: "inference/nvidia/new-model" },
         {
           id: "research",
+          default: true,
           model: "inference/nvidia/secondary-model",
           workspace: "/sandbox/.openclaw/workspace-research",
           agentDir: "/sandbox/.openclaw/agents/research",

src/lib/actions/inference-set.ts

@@ -233,12 +233,21 @@ function updateAgentPrimary(config: ConfigObject, primaryModelRef: string): void
 function updatePrimaryAgentListModel(agents: ConfigObject, primaryModelRef: string): void {
   const list = agents.list;
   if (!Array.isArray(list)) return;
+  let defaultAgent: ConfigObject | undefined;
   for (const entry of list) {
     if (!isConfigObject(entry)) continue;
-    const isPrimaryAgent = entry.id === "main" || entry.default === true;
-    if (isPrimaryAgent && typeof entry.model === "string") {
-      entry.model = primaryModelRef;
+    if (entry.id === "main") {
+      if (typeof entry.model === "string") {
+        entry.model = primaryModelRef;
+      }
+      return;
     }
+    if (!defaultAgent && entry.default === true) {
+      defaultAgent = entry;
+    }
+  }
+  if (defaultAgent && typeof defaultAgent.model === "string") {
+    defaultAgent.model = primaryModelRef;
   }
 }