feat(onboard): add OpenCode Zen as model provider

src/commands/opencode-zen-model-default.test.ts

@@ -0,0 +1,57 @@
+import { describe, expect, it } from "vitest";
+
+import type { ClawdbotConfig } from "../config/config.js";
+import {
+  applyOpencodeZenModelDefault,
+  OPENCODE_ZEN_DEFAULT_MODEL,
+} from "./opencode-zen-model-default.js";
+
+describe("applyOpencodeZenModelDefault", () => {
+  it("sets opencode-zen default when model is unset", () => {
+    const cfg: ClawdbotConfig = { agents: { defaults: {} } };
+    const applied = applyOpencodeZenModelDefault(cfg);
+    expect(applied.changed).toBe(true);
+    expect(applied.next.agents?.defaults?.model).toEqual({
+      primary: OPENCODE_ZEN_DEFAULT_MODEL,
+    });
+  });
+
+  it("overrides existing model", () => {
+    const cfg = {
+      agents: { defaults: { model: "anthropic/claude-opus-4-5" } },
+    } as ClawdbotConfig;
+    const applied = applyOpencodeZenModelDefault(cfg);
+    expect(applied.changed).toBe(true);
+    expect(applied.next.agents?.defaults?.model).toEqual({
+      primary: OPENCODE_ZEN_DEFAULT_MODEL,
+    });
+  });
+
+  it("no-ops when already opencode-zen default", () => {
+    const cfg = {
+      agents: { defaults: { model: OPENCODE_ZEN_DEFAULT_MODEL } },
+    } as ClawdbotConfig;
+    const applied = applyOpencodeZenModelDefault(cfg);
+    expect(applied.changed).toBe(false);
+    expect(applied.next).toEqual(cfg);
+  });
+
+  it("preserves fallbacks when setting primary", () => {
+    const cfg: ClawdbotConfig = {
+      agents: {
+        defaults: {
+          model: {
+            primary: "anthropic/claude-opus-4-5",
+            fallbacks: ["google/gemini-3-pro"],
+          },
+        },
+      },
+    };
+    const applied = applyOpencodeZenModelDefault(cfg);
+    expect(applied.changed).toBe(true);
+    expect(applied.next.agents?.defaults?.model).toEqual({
+      primary: OPENCODE_ZEN_DEFAULT_MODEL,
+      fallbacks: ["google/gemini-3-pro"],
+    });
+  });
+});