refactor(media)!: delete media demo feature

Veect retrofit (ADR-027): third slice of the demo-content removal.
Deletes packages/media whole and prunes every composition edge in one
commit: core-api router mount + dep, core-cms collection composition +
dep + regenerated Payload types, web-next bindAll (prod + dev-seed) +
tests + Tailwind source + transpilePackages + dep, cms/core-cms/web-next
payload config test assertions, tsconfig paths, anchor-guard + generator
e2e feature lists, compliance data-map + retention-policy regeneration,
lockfile prune, and feature-list doc entries (CLAUDE.md, AGENTS.md,
glossary, app/feature AGENTS.md).

Media was the uploads feature: the marketing-pages pages.hero.image and
navigation header.logo upload fields (relationTo: "media") are removed
from those collections in this slice — Payload config sanitization
rejects a relationship to a missing collection. Both features' domain
entities keep their optional imageId/logoId fields; their repositories
already tolerate the fields being absent. Both features are deleted in
later slices.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

apps/web-next/AGENTS.md

@@ -66,14 +66,14 @@ export function Providers({ children }: { children: React.ReactNode }) {
 
 ## Dependencies
 
-| Dependency                        | Purpose                                                    |
-| --------------------------------- | ---------------------------------------------------------- |
-| `@repo/core-api`                  | `appRouter` for tRPC endpoint                              |
-| `@repo/core-trpc/next`            | Next.js tRPC client + provider (optional — scaffold first) |
-| `@repo/core-ui`                   | Design system components (optional — scaffold first)       |
-| `@repo/auth`, `@repo/media`, etc. | Feature packages (indirectly via core-api)                 |
-| `next`                            | Next.js 15 framework                                       |
-| `@trpc/server`                    | tRPC server (fetch adapter)                                |
+| Dependency                             | Purpose                                                    |
+| -------------------------------------- | ---------------------------------------------------------- |
+| `@repo/core-api`                       | `appRouter` for tRPC endpoint                              |
+| `@repo/core-trpc/next`                 | Next.js tRPC client + provider (optional — scaffold first) |
+| `@repo/core-ui`                        | Design system components (optional — scaffold first)       |
+| `@repo/auth`, `@repo/navigation`, etc. | Feature packages (indirectly via core-api)                 |
+| `next`                                 | Next.js 15 framework                                       |
+| `@trpc/server`                         | tRPC server (fetch adapter)                                |
 
 ## Test conventions
 
@@ -104,7 +104,7 @@ Run: `pnpm test:e2e` starts the dev server and runs all `.spec.ts` files.
 
 ## Cross-References
 
-- **Feature packages:** `packages/{auth,media,marketing-pages,navigation}/`
+- **Feature packages:** `packages/{auth,marketing-pages,navigation}/`
 - **tRPC composition:** `packages/core-api/AGENTS.md`
 - **tRPC client + provider (optional):** scaffold `@repo/core-trpc` first, then see `turbo/generators/templates/core-package/trpc/AGENTS.md.hbs`
 - **UI components (optional):** scaffold with `pnpm turbo gen core-package ui`, then see `turbo/generators/templates/core-package/ui/AGENTS.md.hbs`