The owner's answers on moving tiles:
- "dont move the tile": an empty slot no longer takes a tile. A slot is
always the last cell, so a move there shifted every tile after it.
Each drop target now says what it accepts (_acceptTabDrops'
`accepts`): a tile takes any session but its own, an empty slot only a
session not tiled yet. A refused drag is still held (dropEffect none,
no highlight), and dropSessionOnSlot refuses a tiled session too, its
tab included. A session not tiled yet still joins on a slot.
- A cancelled drag changes nothing, focus included (best practice): the
header focuses its tile on click, never on press, so a drag that ends
with Escape or outside leaves focus and the idle alert alone. The body
keeps press-to-focus, so focus still moves before a press reaches
xterm. The rename input stops its own clicks.
- A tiled tab dropped on the zoomed tile stays refused (confirmed).
- The Alt+Shift+Arrow focus chords skip a text field too (best
practice), as the move chords already did: shifted arrows select
there. Toggle and zoom are not text-editing keys and are unchanged.
Docs: the wiki, the spec's as-built bullet (with the owner's answers),
the invariants and CLAUDE.md say so.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>