Settings takes a persona's whole archive away and brings one back

Data import/export gains the persona's archive (PrivaPub's /clientapi/persona/{id}/archive): made on PrivaPub in
Mastodon's account-archive layout and downloaded through a link; and an archive, its own or Mastodon's, uploaded in
pieces straight from the picked file (js/transfer.js) and imported into the persona, the parts chosen (likes, located
and scheduled posts only when ticked), with progress, a report of what came and what was left out, and Stop. Imported
posts are delivered to no one.

e2e: a town persona's archive downloaded and imported into another, whose profile then shows the posts; the copies are
taken away after.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

CLAUDE.md

@@ -380,7 +380,11 @@ supplies:
   discoverable, indexable and posting defaults; the composer starts a new post at its default visibility), its mutes,
   blocks and blocked servers (`MutesAndBlocks`), and `DataTransfer`: follows, lists, blocks, mutes, blocked servers
   and bookmarks exported and imported as the CSV files Mastodon writes, so a persona moves between servers. An import
-  resolves each row through PrivaPub and acts one row at a time; it can be stopped.
+  resolves each row through PrivaPub and acts one row at a time; it can be stopped. Above it, `PersonaArchivePanel`
+  (`ArchiveService`, `/clientapi/persona/{id}/archive`; owner decision 2026-10-07): the persona's whole archive made on
+  PrivaPub in Mastodon's layout and downloaded through a link; and an archive (its own, or Mastodon's) uploaded in pieces
+  by `js/transfer.js` and imported into it, the parts chosen (likes, located and scheduled posts off unless ticked),
+  with progress, a report and Stop. Imported posts are delivered to no one.
 - **Administration** (`Pages/Administration.razor`, `Components/Admin/`, for moderators): reports, then for
   administrators the servers blocked for everyone, the federation statistics and the backups. PrivaPub has no admin list
   of users, and adding an admin endpoint waits for the owner, so the Users section stays empty.