feat(coding): add PI-105 product file host API

tests/unit/coding-product-tools-facade.test.ts

@@ -0,0 +1,44 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const hostApiFetchMock = vi.hoisted(() => vi.fn());
+
+vi.mock('../../src/lib/host-api', () => ({
+  hostApiFetch: (...args: unknown[]) => hostApiFetchMock(...args),
+}));
+
+import {
+  findCodingFiles,
+  getCodingConversationChanges,
+  getCodingConversationCommands,
+  getCodingFileContent,
+  getCodingFileStatus,
+  getCodingSkills,
+  searchCodingText,
+} from '../../src/lib/coding-product-tools';
+
+describe('PI-105 Renderer coding product facade', () => {
+  beforeEach(() => {
+    hostApiFetchMock.mockReset().mockResolvedValue({});
+  });
+
+  it('uses only the vendor-neutral coding file and catalog routes', async () => {
+    await getCodingFileStatus();
+    await findCodingFiles('app file', 25);
+    await getCodingFileContent('src/app file.ts');
+    await searchCodingText('hello world');
+    await getCodingSkills('builder/one');
+    await getCodingConversationCommands('conversation/one');
+    await getCodingConversationChanges('conversation/one');
+
+    expect(hostApiFetchMock.mock.calls.map(([route]) => route)).toEqual([
+      '/api/coding/files/status',
+      '/api/coding/files/find?query=app+file&limit=25',
+      '/api/coding/files/content?path=src%2Fapp+file.ts',
+      '/api/coding/search?pattern=hello+world',
+      '/api/coding/skills?agentId=builder%2Fone',
+      '/api/coding/conversations/conversation%2Fone/commands',
+      '/api/coding/conversations/conversation%2Fone/changes',
+    ]);
+    expect(JSON.stringify(hostApiFetchMock.mock.calls)).not.toContain('/api/opencode');
+  });
+});