feat(setup): add model provider setup flows

src/cli/setup/providers.test.ts

@@ -0,0 +1,64 @@
+import { describe, it, expect } from 'vitest';
+import { createInterface } from 'readline/promises';
+import { EventEmitter } from 'events';
+import { createPrompter } from './prompts.js';
+import { ConfigBuilder } from './config.js';
+import { setupProviders } from './providers.js';
+
+function mockReadline(inputs: string[]) {
+  let questionIdx = 0;
+  const emitter = new EventEmitter();
+
+  return {
+    async question(query: string) {
+      const answer = inputs[questionIdx++];
+      return answer ?? '';
+    },
+
+    close() {
+      // no-op
+    },
+
+    [Symbol.asyncIterator]() {
+      return this;
+    },
+
+    async next() {
+      return { done: true };
+    },
+  } as any;
+}
+
+describe('setupProviders', () => {
+  it('configures anthropic as default provider', async () => {
+    const rl = mockReadline(['1', 'sk-ant-test123', '', 'n']);
+    const p = createPrompter(rl);
+    const builder = new ConfigBuilder();
+    await setupProviders(p, builder);
+    const config = builder.build();
+    expect(config.models.default.provider).toBe('anthropic');
+    expect(config.models.default.api_key).toBe('sk-ant-test123');
+    expect(config.models.default.model).toBe('claude-sonnet-4-20250514');
+  });
+
+  it('configures ollama as default provider', async () => {
+    const rl = mockReadline(['3', '', '', 'n']);
+    const p = createPrompter(rl);
+    const builder = new ConfigBuilder();
+    await setupProviders(p, builder);
+    const config = builder.build();
+    expect(config.models.default.provider).toBe('ollama');
+    expect(config.models.default.endpoint).toBe('http://localhost:11434');
+  });
+
+  it('configures anthropic with fast tier', async () => {
+    const rl = mockReadline(['1', 'sk-ant-test123', '', 'y', '']);
+    const p = createPrompter(rl);
+    const builder = new ConfigBuilder();
+    await setupProviders(p, builder);
+    const config = builder.build();
+    expect(config.models.default.provider).toBe('anthropic');
+    expect(config.models.fast).toBeDefined();
+    expect(config.models.fast.provider).toBe('anthropic');
+  });
+});