Move Beleaguered Castle tableau columns down by 1/3 card height

[SorraTheOrc]

Shift TABLEAU_TOP_Y down by ~42px (1/3 of BC_CARD_H=126) to give more visual space between foundations and tableau columns.

[SorraTheOrc]

\n\n**opencode**\n\nChanged TABLEAU_TOP_Y from 225 to 267 in BeleagueredCastleScene.ts. Merged to main in 564b4ea.

[SorraTheOrc]

\n\n**worklog**\n\nClosed with reason: Merged to main in 564b4ea. All tests pass, build succeeds.