chore: groundwork for media library feature

docs/design/components.md

@@ -764,3 +764,23 @@ Cancel goes through `ConfirmDialog` with `tone: 'danger'`: title "Cancel this in
 ### SettingsPage
 
 A page header (title "Settings", subtitle "Workspace information."), then one card holding a "Version" row. See [screens/settings.md](screens/settings.md).
+
+## Added with Media
+
+Exact values live in `source/MediaFrame.dc.html`. Copy and states are in [media](screens/media.md) and [media-picker](screens/media-picker.md).
+
+| Component | Nuxt UI base | Props | Emits | Used in |
+|---|---|---|---|---|
+| MediaToolbar | UTabs, UInput, USelectMenu, UButtonGroup | tab, q, sort, view, counts | update:tab, update:q, update:sort, update:view | Media |
+| MediaGrid | custom (buttons in a grid) | items, selected: Set, loading | open(id), toggle(id) | Media |
+| MediaTable, MediaCardList | UTable, custom list | same as MediaGrid | same as MediaGrid | Media (md and up, below md) |
+| MediaBulkBar | custom, UButton | count | delete, clear | Media |
+| MediaDetailPanel | USlideover | id | close, rename, delete, copy-url, review-duplicates | Media |
+| MediaUploadPanel | UProgress, UButton | rows | use-existing(row), upload-anyway(row), retry(row), cancel, dismiss | Media |
+| DuplicateGroups | custom cards | groups | merge(group, keepId) | Media |
+| MediaThumb | custom | item, size | none | Media, picker |
+| MediaBadge | UBadge | kind: 'unused'\|'duplicate'\|'used'\|'online'\|'draft', label | none | Media, picker |
+| RenameDialog, MergeDialog, DeleteMediaDialog | ConfirmDialog, UForm | item(s) | done | Media |
+| MediaPicker | UTabs inside ImageUploader | articleId | picked(item, alt) | Editor |
+
+ImageUploader (changed): it gains the Upload and Library tabs and the "Already in your library" card. The remove-image confirm becomes neutral and only detaches the image from the article.