Advance Wars:
- Add HP override system (seed/set/clearHpOverride) so units show correct
HP during enemy-turn replay until their battle animation plays
- Redesign river/road channel rendering with layered depth: rivers get
deep channel, light core, and ripple crests; roads get concrete shoulders,
asphalt, and dashed centre lines phase-locked to tile seams
Tetris Attack:
- Add character sprite sheet and per-host background images (beth, jerry,
michael, steve, victor, klaxon)
- Declare hero background assets in manifest; scene falls back gracefully
when art is missing
- Update characterSheet path in tetrisattack-artwork.json