- Treat k <= -1 as "other zone contains this rim" so a level-1 gate
tether at exactly the level-2 anchor's range no longer draws a spurious
full circle inside the union.
- Update doc comment to clarify external vs internal tangency cases.
- Add regression tests covering the d + rInner = rOuter boundary case.
- Add spacestation music and surface video assets.
- New shared audio voices: js/utils/Sfx.js (playSfxOn/stopSfxOn/sfxPlayingOn)
and js/utils/Music.js (loop voice + shuffle playlist), both with v4 guard
rails (cache.audio.has, stopByKey, isPlaying) so missing assets never throw.
- data/music.json: menu loop, shuffled deep-space soundtrack for GameScene,
and per-world surface loops keyed by planets.png frame; new mp3 assets in
assets/music/.
- data/sfx.json: add ui_hover/ui_click/ui_window/ui_close/mining_loop and a
dedicated scan track; wire UI components (buttons, panels, popups, save
vault) to the shared voice via scene.playSfx seam.
- GameScene: start/stop the shuffle on create/shutdown, stop both soundtrack
and mining hum on 'sleep' (landing launch+sleep) and resume on 'wake';
mining hum loops while beam is live and stops quietly on 'stopped'.
- SurfaceScene: preload and loop the world's track from landing through
takeoff; fix landing frame hand-off to pass sheetFrame instead of the
texture Frame object.
- MenuScene: preload SFX + menu music, start the menu hum in create, stop it
on the 'shutdown' event (v4 never calls shutdown() on transition).
- data/ship.json → stats: hullIntegrity/shields/cargoHold/mineralStorage,
exposed as ship.stats for future combat/trading/mining systems.
- Tests: dev/sfx.test.mjs and dev/music.test.mjs cover the shared voices,
guards, and data contracts; ship-behavior and system-hud tests extended
for base stats and the mining hum lifecycle.
Brian Fertig