Merge origin/main into overhaul

Both sides added upstream client-identification headers independently.
Keep the overhaul's client (caching now lives in workshop-cache.ts, so
the in-client preview cache and its TTL are gone) and adopt origin's
identity string 'reforger.dzr.tools'. Origin's header test is kept,
retargeted from the removed health() onto search().

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017iyv7BRFwX5nGqY5uV91Uu

apps/api/src/modules/workshop/workshop-client.test.ts

@@ -120,6 +120,21 @@ describe('localizedLabel', () => {
 });
 
 describe('WorkshopClient (v2)', () => {
+  it('identifies panel traffic to the upstream API', async () => {
+    const { client: workshop, fetchImpl } = client(() => listResponse());
+    await workshop.search({});
+
+    expect(fetchImpl).toHaveBeenCalledWith(
+      expect.any(String),
+      expect.objectContaining({
+        headers: expect.objectContaining({
+          'User-Agent': 'reforger.dzr.tools',
+          'X-API-Client': 'reforger.dzr.tools',
+        }),
+      }),
+    );
+  });
+
   it('maps search results with typed sizes and ratings', async () => {
     const { client: workshop, fetchImpl } = client(() => listResponse());
     const result = await workshop.search({

apps/api/src/modules/workshop/workshop-client.ts

@@ -32,7 +32,7 @@ import { ApiError } from '../../lib/errors.js';
  */
 
 /** Identifies the panel to the upstream, as its docs request. */
-const CLIENT_NAME = 'reforger-panel';
+const CLIENT_NAME = 'reforger.dzr.tools';
 
 // ---------- upstream schemas ----------