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

compliance/data-map.yml

@@ -2,10 +2,6 @@
 # Generated by scripts/compliance/emit-data-map.mjs — do not edit manually.
 # Run `pnpm compliance:data-map` to regenerate.
 collections:
-  media:
-    auth: false
-    piiFields: []
-    slug: media
   pages:
     auth: false
     piiFields: []

compliance/retention-policy.yml

@@ -2,13 +2,6 @@
 # Generated by scripts/compliance/emit-retention-policy.mjs — do not edit manually.
 # Run `pnpm compliance:retention-policy` to regenerate.
 collections:
-  media:
-    postDeletion:
-      action: hard-delete
-      duration: P90D
-      trigger: after-deletion
-    purgeSchedule: monthly
-    slug: media
   pages:
     postDeletion:
       action: hard-delete