feat(media): full Clean Architecture scaffold

Media is now a complete vertical-feature package mirroring auth/blog
structure: entities (models + errors), application (repositories +
use-cases), infrastructure (real Payload-backed + mock siblings),
interface-adapters (per-use-case controllers), DI (symbols + module +
container + bind-production), integrations/api (mediaRouter), factory,
contract suite, and feature integration tests.

Wired into:
- packages/core-api/src/root.ts (added `media: mediaRouter`)
- apps/web-next/src/server/bind-production.ts (calls bindProductionMedia)
- tsconfig.base.json (added @repo/media/api and ./di/bind-production aliases)

56 new tests in @repo/media (13 test files); core-api router test updated
to assert media. procedures. All 26 turbo tasks green.

Refactor log: §2, §4.1, §4.2, §5.1, §6.1
Spec: §6.5

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/media/src/di/container.test.ts

@@ -0,0 +1,52 @@
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+import { mediaContainer } from "@/di/container";
+import { MEDIA_SYMBOLS } from "@/di/symbols";
+import { MediaModule } from "@/di/module";
+import { MockMediaRepository } from "@/infrastructure/repositories/media.repository.mock";
+import type { IMediaRepository } from "@/application/repositories/media.repository.interface";
+
+describe("mediaContainer", () => {
+  beforeEach(() => {
+    mediaContainer.unbindAll();
+    mediaContainer.load(MediaModule);
+  });
+
+  afterEach(() => {
+    mediaContainer.unbindAll();
+  });
+
+  it("resolves IMediaRepository to MockMediaRepository by default binding", () => {
+    const repo = mediaContainer.get<IMediaRepository>(MEDIA_SYMBOLS.IMediaRepository);
+    expect(repo).toBeInstanceOf(MockMediaRepository);
+  });
+
+  it("resolves IGetMediaController as a function", () => {
+    const ctrl = mediaContainer.get(MEDIA_SYMBOLS.IGetMediaController);
+    expect(typeof ctrl).toBe("function");
+  });
+
+  it("resolves IListMediaController as a function", () => {
+    const ctrl = mediaContainer.get(MEDIA_SYMBOLS.IListMediaController);
+    expect(typeof ctrl).toBe("function");
+  });
+
+  it("resolves IDeleteMediaController as a function", () => {
+    const ctrl = mediaContainer.get(MEDIA_SYMBOLS.IDeleteMediaController);
+    expect(typeof ctrl).toBe("function");
+  });
+
+  it("resolves IGetMediaUseCase as a function", () => {
+    const uc = mediaContainer.get(MEDIA_SYMBOLS.IGetMediaUseCase);
+    expect(typeof uc).toBe("function");
+  });
+
+  it("resolves IListMediaUseCase as a function", () => {
+    const uc = mediaContainer.get(MEDIA_SYMBOLS.IListMediaUseCase);
+    expect(typeof uc).toBe("function");
+  });
+
+  it("resolves IDeleteMediaUseCase as a function", () => {
+    const uc = mediaContainer.get(MEDIA_SYMBOLS.IDeleteMediaUseCase);
+    expect(typeof uc).toBe("function");
+  });
+});