chore: updated reference design to app changes and fixes

docs/design/screens/schema-later.md

@@ -4,7 +4,8 @@ All states on this page are **Later**: relations, permissions and schema export
 
 Visual reference: `RenewCMS Screens Schema.dc.html`, groups "Relations", "Permissions", "Export and import". Frames: `SchemaFrame.dc.html` mounted in `AppFrame.dc.html` (shell, sidebar, topbar, drawer). Every state is drawn in light and dark (theme switch) at 1440×900 (shown at 50%) and 390×844 (shown at 75%). Copy is exact. Strings in a Copy cell are separated by " · " and listed in reading order. Nothing is clock-sensitive.
 
-### 7 Relation field and picker (group "7 Relations", 4 states)
+### 7 Relation field and picker (group "7 Relations", 5 states)
+The picker exists in the app, so this group is no longer under "Later" in the build order; the route and the permission row stay as written.
 
 Route: `/schema/:key, /content/:key/:id`. API: not built. Auth: Owner or admin (picker), any verified user (form).
 
@@ -30,7 +31,7 @@ All later. Rows are types, columns are actions, one role at a time. Built-in row
 
 ### 9 Schema export and import (group "9 Export and import", 3 states)
 
-Route: `/schema (dialogs)`. API: not built. Auth: Owner or admin.
+Route: `/schema (dialogs)`. API: not built. Auth: permissions schema.view (open and read), schema.edit (create and change), schema.delete (delete a type).
 
 All later. Dev-to-production flow: export a file, import it elsewhere, preview, same compatibility review as group 3, explicit confirm.
 
@@ -39,3 +40,5 @@ All later. Dev-to-production flow: export a file, import it elsewhere, preview,
 | 1 | Export | Export on /schema. | Export schema · Download the fields of your content types as a file. Entries aren't included. · All content types · 3 content types · One content type · Choose which one · File name · renewcms-schema.json · Import this file on another RenewCMS site to create the same content types. · Cancel · Download file | Later |
 | 2 | Import preview | A file was chosen. | Import schema · renewcms-schema.json · 3 content types · Create 1, change 1, no change 1 · Recipes · New content type with 4 fields. · Events · Add 2 fields, remove Description. Events has 37 entries on this site. · Removes data · Press mentions · Same as on this site. · Existing entries are checked against the changes when you import. If any entry doesn't fit, nothing is imported. · Cancel · Import schema | Later |
 | 3 | Import refused | The server answers schema_incompatible. | Nothing was imported · Some entries on this site don't fit the imported fields. RenewCMS can't tell which entries. The flagged change can cause this. · Try again | Later |
+
+| 4 | Relation picker: load more failed | Load more failed. Loaded rows stay, an inline error replaces the count, the button reads Try again. Focus stays on the button, then moves to the first new row. | Couldn't load more results. The 25 shown are still here. · Try again | Available now |