AKUNUR 3.0.0-alpha.8 UI TEST CHECKLIST

General
[ ] Header shows v3.0.0-alpha.8 Still Point prototype.
[ ] Standard opening loads with White to move.
[ ] Free placement remains selectable.
[ ] Printable PDF opens and identifies alpha.8.

Still Point transit
[ ] A centre-adjacent stone without two other friendly centre supports cannot use the Still Point.
[ ] A centre-adjacent stone with two other friendly centre supports shows final legal destinations, not the Still Point itself.
[ ] Clicking a destination completes the full move in one action and leaves the centre empty.
[ ] The move log records "via S".
[ ] The first completed passage records the marker award.
[ ] White and Black marker status update independently in the Status panel.
[ ] Undo restores the moving stone and removes a newly earned marker when appropriate.

Adjacent-corner restriction
[ ] After a first corner, the neighbouring corner is not a legal destination before the marker is earned.
[ ] A non-neighbouring second corner remains legal under the normal support rule.
[ ] After earning the marker, the adjacent corner becomes legal.
[ ] The same restriction and unlock apply to capturing an opponent-held adjacent corner.

Empty Echo Point
[ ] Selecting an Echo Piece with an empty Echo Point shows the red dashed line.
[ ] The empty Echo Point shows the distinct Echo destination marker.
[ ] Clicking it completes the jump and preserves Echo Piece status.

Occupied Echo Point - ordinary target
[ ] An enemy ordinary stone at the Echo Point is a legal destination.
[ ] The red dashed line and capture marker are shown.
[ ] Clicking it moves the Echo Piece to the destination.
[ ] The captured ordinary stone moves to its own Echo Point, normally the Echo Piece's vacated origin.
[ ] The move log uses "echo to (...)" wording rather than "stone removed".
[ ] A friendly stone at the Echo Point blocks the move.

Occupied Echo Point - Echo target
[ ] An enemy Echo Piece at the Echo Point is a legal destination.
[ ] Clicking it moves the attacking Echo Piece to the destination.
[ ] The captured Echo Piece is removed permanently and does not appear at the vacated origin.
[ ] The move log says "captured Echo Piece removed".

Captured Echo Piece
[ ] A normal supported capture of an Echo Piece removes it permanently.
[ ] No stone appears at the captured Echo Piece's opposite Echo Point.
[ ] A corner capture of an Echo Piece removes it permanently.
[ ] The capturing stone remains on the capture cell with the correct ordinary/Echo identity.
[ ] Undo restores both the captured Echo Piece and the capturing stone's prior position.

Regression
[ ] Ordinary supported captures still displace ordinary captured stones to their Echo Point.
[ ] An occupied ordinary-stone Echo destination still removes its occupant before arrival.
[ ] Corner captures still remove ordinary captured stones.
[ ] AI can choose and execute Still Point passages, Echo jumps, Echo captures and captures of Echo Pieces.
