docs: consolidate design change logs and refresh stale docs

docs/design/screens/schema.md

@@ -78,7 +78,7 @@ One frame per type: inspector options, the entry form control (default and open
 | 6 | Choice | type: "select" | Choice · One option from a list you define · Choices · Choose an option · Choose one of: Talk, Workshop or Meetup. · Another entry already uses this choice for Category. | Available now |
 
 ## Media field (pass 5)
-Spec, states, exact copy, measurements, backend needs and accessibility: `media-field-changes.md`, section 3.1 to 3.4. Board groups: 1 Schema list, 2 Schema builder, 3 Review, 4 Field types.
+Spec, states, exact copy, measurements, backend needs and accessibility: `media-field.md`, section 3.1 to 3.4. Board groups: 1 Schema list, 2 Schema builder, 3 Review, 4 Field types.
 
 ## Permissions (app sync)
 Three keys gate Schema: schema.view (list and read types, and the Schema sidebar entry), schema.edit (create and change types and fields), schema.delete (delete a content type). The built-in Owner and Admin roles hold all three. The app still words the 403 as "Only owners and admins can…"; the design keeps that copy until the app changes. A role with schema.view only sees the builder read-only: Save, Add field, Move and Remove are hidden.