refactor(commands): share default model applier

src/commands/model-default.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+import type { OpenClawConfig } from "../config/config.js";
+import { applyAgentDefaultPrimaryModel } from "./model-default.js";
+
+describe("applyAgentDefaultPrimaryModel", () => {
+  it("does not mutate when already set", () => {
+    const cfg = { agents: { defaults: { model: { primary: "a/b" } } } } as OpenClawConfig;
+    const result = applyAgentDefaultPrimaryModel({ cfg, model: "a/b" });
+    expect(result.changed).toBe(false);
+    expect(result.next).toBe(cfg);
+  });
+
+  it("normalizes legacy models", () => {
+    const cfg = { agents: { defaults: { model: { primary: "legacy" } } } } as OpenClawConfig;
+    const result = applyAgentDefaultPrimaryModel({
+      cfg,
+      model: "a/b",
+      legacyModels: new Set(["legacy"]),
+    });
+    expect(result.changed).toBe(false);
+    expect(result.next).toBe(cfg);
+  });
+});