Previously the timing-choice modal (Start Now / Wait for Next Block) only appeared for
paid-credits players; free players got a silent immediate drop-in. Now it shows whenever
the game would start instantly:
- Server getGameModeInfo exposes freePlayEnabled (was server-only) so the client knows
free play is available even on a paid instance.
- Client (inputHandler) gates the modal on free-play-available OR paid-credits-with-credits;
the modal is purely a TIMING pick (auto_start vs join_queue) — payment method is unchanged.
- Modal cost text reflects free play.
Both waiting animations are untouched: they render on the ROT display via WaitingScreenAnimator
using the base GameTiles, independent of the render-kit packs (which are disabled for SP anyway),
so they work regardless of visualization style. Suite 62/435 green.
jwinterm