The floor was centered on CANVAS_WIDTH/2 but the container is no longer
centered in the canvas (NEXT panel on right). This created a 26px gap
at the bottom-left corner. Center floor on CONTAINER_X + CONTAINER_WIDTH/2
to match the walls. Also display fruit tier numbers instead of names.
Derive canvas width from container + panel dimensions so the NEXT panel
fits with consistent padding. Extract drawFruitCircle helper so all
fruit rendering (in-game, cursor preview, NEXT panel) shows the name
label consistently. Update color palette for maximum visual distinction
between similar fruits (cherry/strawberry/apple, dekopon/persimmon).
Center score text over the container instead of the canvas.
Fix fruits falling through the floor by replacing single-step physics
with fixed-timestep sub-stepping (16.67ms steps, max 5 per frame).
Add escaped-body cleanup as safety net. Tune physics constants for
better feel (higher density, more bounce, less float).
Update fruit radii to match the community-standard ratios (TomboFry/
moonfloof clones) scaled to our 400px container. Update colors to
match real fruit appearances. Fix "Grapes" → "Grape" per wiki.
Browser-based physics puzzle game where players drop fruits that merge
into larger fruits on collision, using Matter.js for 2D physics and
Canvas2D for rendering. Includes 11-fruit progression chain, scoring,
game-over detection, mouse/touch input, and Vitest test suite.
