WP Explorer: a list view — ids, slugs, dates and counts in sortable columns, remembered per user

[AllTerrainDeveloper]

What

Every WP Explorer section (posts, pages, media, users, every CPT) gains an Icons / List switch in its search band. The list is a sortable table of the facts an id-minded person needs at a glance — the idea came from a user who runs their newsletter on ?p=123 links and reads ids off the CatchIDs plugin.

• Columns per kind. Posts and CPTs: ID (a chip that copies itself), Title with status badge and lock, Slug, Author, Status, Date, Modified (live relative time), Comments, Parent (hierarchical types), Words (off by default). Media: ID, File, File name, Type, Size, Dimensions, Attached to, Uploaded by, Uploaded, Modified. Users: ID, Name, Username, Email, Role, Posts, Registered.
• Sortable headers drive the same server orders the icon view's "Sort by" menu offers; sort_options() grew ID / modified / slug / comment orders for posts and ID / username / email / post-count orders for users. Entering the list with no order chosen sorts by ID, highest first.
• Same rows, same behaviour: drag-out, click / Ctrl / Shift / marquee selection, keyboard navigation (arrows, Enter, Space), infinite scroll through the framework's paged list. Selection and the open item are one state for both views and scroll into sight after a switch. The preview pane stays.
• Row action cluster: edit, copy link, copy the ?p= shortlink, more (the context menu). Users get profile, footprint and archive link.
• Copy ID and Copy shortlink in both views' context menus, over a selection.
• Column chooser with ticks, remembered per section; the view mode remembered too — both per user through $os->store().
• os.my-wordpress.list-columns JS filter for plugin columns, documented in docs/javascript-reference.md with a recipe in docs/examples/my-wordpress-list-column.md.

Framework additions

• copyText() in @openstation/app (and wp.os.apps): async clipboard first, selection + execCommand fallback on insecure origins, resolves to whether the copy actually happened.
• The kit's html renderer marks child slots with comment nodes. The HTML parser foster-parents stray text out of <table> / <tbody> / <tr>, so a text marker between two <td>s landed after the table with the cells. Attribute, comment and raw-text (<style>, <textarea>, …) slots keep text markers. Pinned by src/ui/core/html-table-slots.test.ts.

Fixes found on the way

• The hover card showed the excerpt's raw […]; entities are decoded server-side now.
• The sort menu's tick never painted — a dashicon inside os-context-menu-option's shadow root renders empty; both menus use the component's checked glyph.
• An ID-primary order was silently flipped by the ID tiebreak key overwriting it in the orderby array.

Tests

• apps/my-wordpress/parts/list-table.test.ts (16): column model per kind, the plugin filter (add / reorder / drop, broken results ignored), sort cycling, header arrows and aria-sort, row facts, selection / activation / menu, the action cluster and the copying id chip, the column chooser, the view switch and selection carry-over.
• tests/phpunit/tests/myWordPressApp.php: the new sort orders (ID both ways, slug, username), the row facts, the remembered view mode per user, the remembered hidden columns per section, the decoded excerpt. Line budget raised for the new surface, every file still under 1,000 lines.
• Full JS suite (427 files), type check, ESLint, phpcs -n and the app's PHPUnit class all green.

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