The wiki's Tile Grid page gets a "Moving tiles" section and the move
chords in its keys table (with what they leave to a text field and
take from a terminal editor inside a tile); Keyboard Shortcuts lists
the chords and the header drag. The spec records moving as an owner
request in its as-built list, with the reasoning behind the default
keys. The invariants and CLAUDE.md say every move goes through
_reorderTiles (no remount, reconnect or reload; only a tile whose cell
size changed fits) and that the header drag carries its own type and
is not draggedTabId.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>