xfy 60bfdb9ca6 docs(spec): add egui parameter UI (bevy_egui 0.41) + dependencies section ...

- Switch interaction from keyboard to a collapsible egui 'Controls' panel
  with grouped sections (Camera/Disk/Doppler/Renderer/Background/Grid/Planets)
- Pin bevy_egui 0.41.0 (verified against crates.io: bevy ^0.19 + egui ^0.35)
- Add Dependencies section §0; add src/ui.rs to file structure
- Clarify mouse-input routing between egui panel and orbit controller

2026-07-09 18:26:24 +08:00

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2026-07-09-interstellar-blackhole-design.md

docs(spec): add egui parameter UI (bevy_egui 0.41) + dependencies section

2026-07-09 18:26:24 +08:00