Deleting a folder that holds models answered "A deletion is still pending inside
this folder. Wait for the undo window to expire." even though nothing was staged
and no window was running. `.lm-pending-delete` is only a container: the purge,
the undo and the staging rollback all removed the batch dir inside it and left the
container behind, and the folder manifest matched the directory *name* alone. Any
folder where a model had ever been deleted with the undo window was therefore
undeletable for good, and the same name match refused folder renames.
* `staging_dir_has_content()` is the shared answer to "is there still a batch
here?": an empty container is a leftover, a quarantined batch (`*.orphaned`) is
preserved data and still counts, and an unreadable directory counts too — never
delete over something that could not be listed.
* The container is removed with its last batch (purge, undo, staging rollback,
merged-loser cleanup). `rmdir` only ever succeeds on an empty directory, and the
path is checked to really be a `.lm-pending-delete`, so a model folder is never
at risk.
* A manifest-less batch dir with nothing in it is a crash leftover between
`makedirs` and the manifest write: it is dropped instead of quarantined, which
would have left an empty container that blocks deletion just the same.
Verified: purge, undo and the empty-manifest-less sweep all leave no container
behind, the container survives while another batch is staged, and an empty one no
longer blocks folder delete or rename while a real (or quarantined) batch still
does. 3818 backend tests pass.
Bulk delete merged staged batches by physically moving each loser's
files into the winner's batch dir with os.rename. Cross-volume bulks
(winner and loser on different filesystems) always hit EXDEV, forcing a
rollback and degrading to the batch_ids array with per-batch undo.
Merge is now manifest-only: loser entries are appended to the winner's
manifest with their staged paths unchanged, so staged files keep living
in each model's own .lm-pending-delete/<batch_id> dir (no data IO, no
EXDEV). Loser dirs are recorded in the winner manifest's merged_sources
and each loser manifest is stamped merged_into so its own purge timer, a
post-restart sweep or a direct undo call no-op. A cross-volume bulk is
one undoable batch again, and undo/purge clean up the loser dirs once
the merged batch settles.
- Remove delete_undo_enabled setting (backend default, frontend state,
settings modal UI, 10 locales); staged deletes with 30s undo are now
the only delete path and stale settings keys are silently ignored
- Remove the 1500ms delete-button arm delay (armDeleteButton) from all
delete modals; misclicks are recoverable via the undo toast
- Delete modal always shows the recoverable warning
- Log the first staged file path in staging log lines for easier support