fix(setup): refreshed uncached models online

Changed the setup picker refresh to online-if-uncached so first-run discovery endpoints populate before model selection. Covered an initially empty registry that discovers the custom model during mount.

Fixes #5979

packages/coding-agent/src/modes/setup-wizard/scenes/model.ts

@@ -30,8 +30,10 @@ class ModelSceneController implements SetupSceneController {
 		this.#syncModels();
 	}
 
-	onMount(): void {
-		void this.#refreshModels();
+	async onMount(): Promise<void> {
+		this.#status = theme.fg("muted", "Discovering available models…");
+		this.host.requestRender();
+		await this.#refreshModels();
 	}
 
 	dispose(): void {
@@ -89,9 +91,10 @@ class ModelSceneController implements SetupSceneController {
 
 	async #refreshModels(): Promise<void> {
 		try {
-			await this.host.ctx.session.modelRegistry.refresh("offline");
+			await this.host.ctx.session.modelRegistry.refresh("online-if-uncached");
 			if (this.#disposed) return;
 			this.#syncModels();
+			this.#status = undefined;
 			this.host.requestRender();
 		} catch (error) {
 			if (this.#disposed) return;

packages/coding-agent/test/setup-wizard.test.ts

@@ -113,7 +113,7 @@ describe("setup wizard scene selection", () => {
 });
 
 describe("setup wizard model selection", () => {
-	it("saves a configured custom model as the default", async () => {
+	it("discovers and saves an uncached custom model as the default", async () => {
 		await initTheme(false, "unicode", false, "titanium", "dark");
 		const settings = Settings.isolated();
 		const model: Model = buildModel({
@@ -128,6 +128,7 @@ describe("setup wizard model selection", () => {
 			contextWindow: 100_000,
 			maxTokens: 32_000,
 		});
+		let available: Model[] = [];
 		const finished = Promise.withResolvers<string>();
 		const setModel = mock(
 			async (
@@ -147,9 +148,11 @@ describe("setup wizard model selection", () => {
 				session: {
 					model: undefined,
 					modelRegistry: {
-						getAvailable: () => [model],
-						getAll: () => [model],
-						refresh: async () => {},
+						getAvailable: () => available,
+						getAll: () => available,
+						refresh: async (strategy: string) => {
+							if (strategy === "online-if-uncached") available = [model];
+						},
 					},
 					setModel,
 				},
@@ -164,6 +167,9 @@ describe("setup wizard model selection", () => {
 		expect(scene).toBeDefined();
 
 		const controller = scene!.mount(host);
+		expect(controller.render?.(120).join("\n")).not.toContain("minimax-m3");
+		await controller.onMount?.();
+		expect(controller.render?.(120).join("\n")).toContain("minimax-m3");
 		controller.handleInput?.("\r");
 		const result = await finished.promise;