feat(metadata): apply language chain and queue full refresh on new entities (INT-3)

Entities created from TMDB candidates (subscription, search/TMDB preview, organize wizard)
and manual assignment to an unregistered TMDB identity take title/overview from the
metadata.languages chain at creation and enqueue refreshMetadata full=1.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/server/test/file-manager/v2.test.ts

@@ -72,6 +72,15 @@ describe.skipIf(skip)("files v2(W9-H)", () => {
       .execute();
     expect(units.filter((u) => u.kind === "season")).toHaveLength(3);
     expect(units.filter((u) => u.kind === "episode")).toHaveLength(28);
+    // INT-3:建档即入队 full 刷新(每集信息、富字段)
+    expect(
+      h.engine.enqueued.filter(
+        (e) =>
+          e.task === "refreshMetadata" &&
+          (e.input as Loose).mediaEntityId === d.mediaEntityId &&
+          (e.input as Loose).full === true,
+      ),
+    ).toHaveLength(1);
 
     const again = await h.api(
       "POST",