History: the icon pass, sorting and the double play; fix a stale changelog line

docs/history.md gets the long-form entry CLAUDE.md asks for: what the
UI pass found, the three bugs it turned up (Escape inside a dialog's
text box, the white password box, the stray dot), why sorting is done
on the server, and how the Files pane came to play a file twice.
CHANGELOG's Added line for the item table named the old columns.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0173mGu6rK18Ne7UGTwAaVJV

CHANGELOG.md

@@ -20,8 +20,8 @@ The long form, with what was wrong before and how it was found, is in
 - Directory, Popular and All Subscriptions at the top of the feed list, opening in the main pane.
   Directory lists every feed anyone here subscribes to, A to Z (`GET /api/directory`). All
   Subscriptions lists every item from every feed you subscribe to (`GET /api/entries`).
-- Items show as a table (unread, kept, item, feed, file, published) with a Files pane beside it,
-  and a status bar with the totals.
+- Items show as a table (unread, kept, title, feed, file, size, published) with a Files pane beside
+  it, and a status bar with the totals.
 - Mark everything read from All Subscriptions, across every feed you subscribe to
   (`POST /api/read-all`). It asks first. All Subscriptions can also check every feed from its header.
 - Click a column heading in the item table to sort by it (kept, title, feed, file type, size,