Prompt
Rebuild "Deeper" as a separate, playable browser game using JavaScript, HTML, Canvas 2D, Browser. Preserve the observed gameplay: A ten-floor roguelike dungeon. Explore turn by turn, fight enemies, manage potions and scrolls, descend through stairs, defeat the Depth Guardian and retrieve the Heart of Depths; generate an epitaph from the run after death. Use Claude Opus 5.5 only as the documented creator attribution; some games call DeepSeek at runtime, which is separate from the build-model claim. Use a scripted/demo fallback when the optional model or network is unavailable. Implement the source-observed start state, controls, rules, game-state transitions, progression and completion/failure feedback. Keep it self-contained and verify the behavior against https://github.com/swan4er/opus-100-projects/blob/main/060-deeper-roguelike/README.md and https://github.com/swan4er/opus-100-projects/blob/main/060-deeper-roguelike/index.html.
