fix(cursor): address PR #527 review feedback

- Wire cursor command into main router (ccs.ts) following copilot pattern
- Centralize default port (4242) and model (gpt-4.1) as constants
- Remove duplicate types already in cursor-protobuf-schema from dev
- Handle daemon exit code 0 before health check succeeds
- Export PID helpers and model utils for testability
- Add unit tests for cursor-daemon (PID file ops, isDaemonRunning)
- Add unit tests for cursor-models (detectProvider, formatModelName, defaults)

tests/unit/cursor/cursor-models.test.ts

@@ -0,0 +1,82 @@
+/**
+ * Unit tests for Cursor models module
+ */
+
+import { describe, it, expect } from 'bun:test';
+import {
+  DEFAULT_CURSOR_MODELS,
+  DEFAULT_CURSOR_PORT,
+  DEFAULT_CURSOR_MODEL,
+  getDefaultModel,
+  detectProvider,
+  formatModelName,
+} from '../../../src/cursor/cursor-models';
+
+describe('DEFAULT_CURSOR_MODELS', () => {
+  it('contains models from multiple providers', () => {
+    const providers = new Set(DEFAULT_CURSOR_MODELS.map((m) => m.provider));
+    expect(providers.has('anthropic')).toBe(true);
+    expect(providers.has('openai')).toBe(true);
+    expect(providers.has('google')).toBe(true);
+  });
+
+  it('has exactly one default model', () => {
+    const defaults = DEFAULT_CURSOR_MODELS.filter((m) => m.isDefault);
+    expect(defaults).toHaveLength(1);
+    expect(defaults[0].id).toBe(DEFAULT_CURSOR_MODEL);
+  });
+});
+
+describe('DEFAULT_CURSOR_PORT', () => {
+  it('is 4242', () => {
+    expect(DEFAULT_CURSOR_PORT).toBe(4242);
+  });
+});
+
+describe('DEFAULT_CURSOR_MODEL', () => {
+  it('is gpt-4.1', () => {
+    expect(DEFAULT_CURSOR_MODEL).toBe('gpt-4.1');
+  });
+});
+
+describe('getDefaultModel', () => {
+  it('returns the default model constant', () => {
+    expect(getDefaultModel()).toBe(DEFAULT_CURSOR_MODEL);
+  });
+});
+
+describe('detectProvider', () => {
+  it('detects anthropic models', () => {
+    expect(detectProvider('claude-sonnet-4')).toBe('anthropic');
+    expect(detectProvider('claude-opus-4')).toBe('anthropic');
+  });
+
+  it('detects openai models', () => {
+    expect(detectProvider('gpt-4.1')).toBe('openai');
+    expect(detectProvider('gpt-5-mini')).toBe('openai');
+    expect(detectProvider('o3-mini')).toBe('openai');
+  });
+
+  it('detects google models', () => {
+    expect(detectProvider('gemini-2.5-pro')).toBe('google');
+  });
+
+  it('detects cursor models', () => {
+    expect(detectProvider('cursor-small')).toBe('cursor');
+  });
+
+  it('defaults to openai for unknown models', () => {
+    expect(detectProvider('unknown-model')).toBe('openai');
+  });
+});
+
+describe('formatModelName', () => {
+  it('returns catalog name for known models', () => {
+    expect(formatModelName('claude-sonnet-4')).toBe('Claude Sonnet 4');
+    expect(formatModelName('gpt-4.1')).toBe('GPT-4.1');
+  });
+
+  it('converts kebab-case to title case for unknown models', () => {
+    expect(formatModelName('my-custom-model')).toBe('My Custom Model');
+  });
+});