chore: groundwork for SEO fixes and tech&vis debt

docs/design/screens/authors.md

@@ -13,7 +13,7 @@ Visual reference: `RenewCMS Screens Back-office.dc.html`, groups "Authors", "Aut
 
 ### Authors (group "Authors", 8 states)
 
-Sidebar entry between Media and Users, visible to every role. Owner and admin create, edit and delete any author. Other roles see the list and the detail read-only. Columns: avatar and name, slug, account (Linked or Guest), article count. Search by name or slug. Long names truncate in the row and show in full on hover. Above 25 authors the list uses the same paginator as Articles (not redrawn). List, panel and dialogs come from DirectoryFrame and are shared with Sites.
+Sidebar entry between Media and Users, visible to every role. Owner and admin create, edit and delete any author. Other roles see the list and the detail read-only. Columns: avatar and name, slug, account (Linked or Guest), article count. Search by name or slug. Long names truncate in the row and show in full on hover. Above 25 authors the list uses the same paginator as Articles; its states are drawn in "Authors: pagination". List, panel and dialogs come from DirectoryFrame and are shared with Sites.
 
 | # | State | Trigger | Copy |
 |---|---|---|---|
@@ -57,5 +57,26 @@ Owner and admin. Reassign: the dialog asks who gets the articles, with "Nobody"
 | 5 | Server fallback (409) | Fallback only. The dialog above always sends reassign_to, so this appears only when the server refuses a stale request because articles still credit the author. Drawn once, not as a flow. | Can't delete this author · "Camille Roche" is credited on 3 articles. Choose another author to credit instead, or remove Camille Roche from those articles first. · Close · Reassign articles |
 | 6 | No articles | An author with zero articles: plain confirm. | Delete this author? · "Léa Fontaine" will be deleted. No articles credit this author. This can't be undone. · Delete author |
 
+### Authors: pagination (group "Authors: pagination", 10 states)
+
+Route: `/authors?page=3&size=50`. API: GET /v1/author/?q=&page=&size= (total in `X-Total-Count`, array body unchanged; `q` already exists). Owner, admin and read-only roles see the same pager. Drawn with 128 authors (6 pages) and generated rows.
+
+**URL.** `/authors?page=2&size=50`. `page` and `size` are the parameter names (as Articles and Activity). `size` is one of 5, 25, 50, 100; default 25. Defaults are omitted from the URL (`page=1`, `size=25`). Combined with search: `/authors?q=mar&page=2`. A search change or a size change resets `page` to 1 and drops it from the URL. An invalid `size` or `page` (not a positive integer) is replaced silently by the default with `history.replace`. A `page` past the last page falls back to the last page: the URL is replaced by `?page=<last>` and the info notice "That page doesn't exist. Showing the last page." is shown, as on Articles. Browser Back returns to the previous page of results.
+
+**Pager.** The same component as Articles and Media, in the same footer position (below the list, right-aligned controls, summary and page-size select on the left; mobile: summary and select on one row, then Previous, "Page X of Y", Next). Nothing new is drawn. Sizes are the sizes of the existing pattern: 5, 25, 50, 100 (default 25). API: total in `X-Total-Count`, array body unchanged. Keyboard and aria as Articles. The only difference from Articles: on a single page the page-size select is hidden too and the footer holds only the count line "N authors" (Articles keeps its summary and select). Existing frames of this screen that show a short list (the "Default" frames above) don't draw the count line yet; it appears whenever the list has loaded.
+
+| # | State | Trigger | Copy |
+|---|---|---|---|
+| 1 | First page | /authors. Previous and First are disabled (40% opacity, aria-disabled). Mobile: Previous disabled. | Showing 1–25 of 128 · 25 per page · Page 1 of 6 |
+| 2 | Middle page | /authors?page=3. Current page uses --rc-sand and --rc-on-sand with a --ui-primary border; ellipses mark skipped ranges once there are more than 7 pages. | Showing 51–75 of 128 · Page 3 of 6 |
+| 3 | Last page | /authors?page=6. Next and Last are disabled. | Showing 126–128 of 128 · Page 6 of 6 |
+| 4 | Single page | Everything fits on one page (6 authors). The pager and the page-size select are hidden; the count line stays in the footer position. Zero results use state 8 instead. | 6 authors |
+| 5 | Page size menu | The select opens upward. Sizes are the Articles sizes: 5, 25, 50, 100; default 25. The chosen size is saved as size and the page resets to 1. | 5 per page · 25 per page · 50 per page · 100 per page |
+| 6 | Loading a page | Next, Previous, a page number or a size change was used. The rows are replaced by the existing skeleton rows (8 desktop, 6 mobile). The pager stays and is disabled (40% opacity, not focusable); the summary reads "Loading page 4…" and the page number shown is still 3. | Loading page 4… |
+| 7 | Error loading a page | 500 or network failure on a page change. The rows of page 3 stay, the pager keeps "Page 3", and the inline error with Retry sits above the pager. Retry repeats the request for page 4. | Couldn't load page 4. Showing page 3. · Check your connection and try again. · Retry |
+| 8 | Empty after search | A search matched nothing. The existing empty state replaces the list; no pager, no count. Clear search returns to /authors and page 1. | No authors match "zoe" · Check the spelling, or search for a shorter part of the name. · Clear search |
+| 9 | Search resets to page 1 | Searching "mar" from page 5 goes to /authors?q=mar (page omitted). Any search change, and any size change, resets the page to 1. | Showing 1–25 of 31 |
+| 10 | Long labels on mobile | A large total on a 390 px screen. The summary and the page-size select share one row and wrap onto two if needed; Previous, the "Page 12 of 52" label and Next stay on one row (the two buttons flex, the label never wraps). Totals over 999 use thousands separators in both labels. | Showing 276–300 of 1,284 · Page 12 of 52 |
+
 ## SEO round
 No change to the Authors screen. Name, profile URL (website) and social links feed `authors[].name`, `authors[].url`, `authors[].same_as` and the JSON-LD author (`sameAs`) in GET /v1/article/{id}/seo. They are visible in the editor's "What the frontend gets" dialog.