By-transmittal pane gains the editing it was missing:
- Rename a transmittal after creation (✎ on the bin → prompt). The name IS the
filing folder (deriveTarget reads bin.name), so renaming changes where copies
land, not just the label.
- Each placed file row is now draggable — drop it on another transmittal to MOVE
it — and carries an ✕ to remove it from the transmittal (clears that axis).
previewFromTarget now lets action buttons through so ✕ doesn't trigger preview.
Test: rename feeds the derived folder; the row is draggable + has remove; ✕
clears the transmittal; re-place moves it to another bin (55 green).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>