[vaprdev]

Summary

Barns, volcanoes and resting creatures sat in the middle of the screen, right behind OpenCode's logo and prompt. Focal points now sit toward the edges, top and bottom, and the engine tells scenes where text actually is so creatures avoid it.

sequenceDiagram
    participant Engine
    participant Scene
    Engine->>Scene: textMap({cols, rows, cover}) on start, then ~1/s
    Scene->>Scene: openSpot(x0, x1, y0, y1) least-covered stop for a creature or visitor
    Scene->>Scene: openRow(y0, y1) height for something crossing the screen

Loading

Positions are measured in screen heights from the nearest edge so they hold on wide and narrow terminals. The octopus, ice fisher and penguins keep clear of the prompt. dev/preview.ts gains home and session layouts and a size argument; documented in CONTRIBUTING.

Evidence

Before (main) on the left, after on the right.

Terminal sizes

Verification: bun run typecheck passes; CI's check job runs dev/check.ts on this branch.

Merge Danger

Door: two-way

Blast Radius: layout

Every wallpaper's composition moves; Scene.textMap is optional, so existing scenes keep working.

Merged together with the other visual improvements in #1; this PR's CI screenshot check fails by design because screenshots are regenerated there.