Moving back to Inside each source followed an existing linked folder in the
destination and could replace a file outside the source (Codex P1). A target
nested inside the thumbnail folder in use was accepted, and the old-copy
cleanup then removed the previews just copied there (Codex P2).
Every copy now checks the whole destination chain for links, also when the
folders exist, and the move refuses a folder inside the one in use with
location-inside-current. The cancelled branches no longer mix explicit and
implicit returns (code-quality note).
An old thumbnail the finishing move cannot remove (held open on Windows)
is now an error row of the job with its path, and logged; a failed copy's
temp that cannot go is logged with its path. Every except that only
passes says why, and the thread runners say their caller re-raises.
A cleanup that waited from an earlier move never names a key folder the
new move just filled, so moving back keeps the previews. Removing empty
folders walks top-down and never into a link or junction. Any error
while copying undoes the copies; once the switch is committed, a journal
that cannot be removed no longer undoes it. Hand-edited cleanup entries
and marker keys never name a folder outside the stores; removal stops at
interpreter exit. The path field carries aria-invalid with its reason,
and a review that went stale reviews again.
System › Sources & scans gains the Thumbnail location row (D196): Inside
each source or One folder, the folder path, the status line and Review
move…, whose review (D197) lists what is copied, removed and left before
Move thumbnails starts; a refused folder is explained under the field, a
folder of your own asks for a confirmation first. Activity shows a move
and a prune with their own tiles and step line (D198). An unavailable
folder shows a notice on Overview and Sources & scans with Recreate folder
or Use this folder (D199). Thumbnail maintenance offers Remove thumbnails
of removed sources in folder mode (D200), and Move library's review says
where the thumbnails stay (D201).
Closes#320
POST /images/thumbnails/plan reviews a move (what is copied, removed and
left, free space, too-long Windows paths, sources no longer listed) and
hands out a token; POST /jobs/thumbnails {mode: move} runs it as a
thumbnails job: hold automatic previews, copy and check every preview on
the job pool, switch with one config commit that records the old copies,
then remove them. Per-file errors still switch; a folder-wide error, a
cancel before the switch or a crash leaves nothing changed (a journal is
undone at the next start); old copies that could not go are removed by a
finishing job at the next start. Leaving a folder removes the previews of
this install's sources that are no longer listed (Q320-8).
Recreate folder and Use this folder answer an unavailable folder; the
Thumbnail maintenance scope prune removes the thumbnails of removed
sources.