Fixed
- Air bubble icons flickering (pop/unpop/pop): duplicate chunk scans could queue when a chunk rapidly unloaded and reloaded (border movement, ticket churn), each one overwriting legitimate updates like lava consuming air. Chunks are now limited to one in-flight scan at a time.
- Nearby lava inconsistently draining air: same root cause as above, resolved by the same fix.
- Safety Lantern not updating while held: a stale cached reading got baked into the item after pick-block, overriding the live air quality display. The live reading is now used whenever the lantern is held; the cached value is only used for inventory and GUI icons.
curios:backtag failing to load without Create installed: Backtank item references are now optional, so the tag loads whether or not Create is present.thinair:respiratoradvancement throwing an error without Curios installed: the advancement is now skipped gracefully when Curios isn’t loaded.
Thanks to sloweia for the detailed report and log, which made this fast to track down. (Issue #8)