- Mining now fires `onDepleted` when a cluster's last rock is consumed; GameScene splices the depleted cluster out of world entities, solids, content record, and map chart, then records its id for persistence
- SaveData captures/restores `depletedClusters` so mined-out fields stay gone across save/load (legacy saves default to empty set)
- Change station compass color from red (#ff4d5e) to bright purple (#c84dff) in data and all UI references
- ResearchWindow: thicken tech-tree edges to 3px core + wide glow, add crawling dash animation on unpowered links, endpoint socket dots, and a comet-trail pulse on powered edges
