Another week, another patch

Updated all tiers of Drill Motor descriptions
All Drill Motor tiers should now work correctly (visuals unchanged for now)
Drill Motor fixes are now included in build
Smelter loading speeds set up and propagated across save/load/serialise/transmit systems
Vein Analyser now has a cost
Fixed Vein Analyser strings
Changed default Segment internal distance to Float.Max from 0 — potentially major performance improvement
Fixed issue with serialising stats
Improved detection of progression through Chapters 6–9
Reduced light range of Biomass Reactors
More solid short-circuiting through Chapter Progression on reload
Added hysteresis to grass deployment
Sped up grass growth to match new placement system
Smart optimisation to Grass has saved significant CPU time
Laser Ablator lights now obey vis and distance rules
Ore Extractor worklights and text now obey room vis
Ore Extractor visual tweaks and polish
Matter Mover no longer attempts to read segments several hundred light years away
Fixed issue where valid teleporter locations could become null
Fixed low-level issue with segment dictionary locking — should prevent duplicate entries
Fixed NRE with Cursor Popup for CPH
Fixed Hardness for Extracted Ores as well as Raw ones

Fixed research lockout under rare conditions
Removed Geological Surveyor (mothballed)
Renamed Cold Research to Cold Hazard License, locked behind Chapter 5 Debts
Reduced Chapter 5 Debts research cost massively
Added OreBen Tier 2 research as a post-Debts reward
Added sanity check to catch missing or misspelled research requirements
Unlocked progression through:
- Chapter 6 (Vertical Freight, Cold Cavern Traversal)
- Chapter 7 (Crystal extraction from Cold Caverns)
- Chapter 8 (Agitation – initial resin handling)
You are not encouraged to charge the OET until Chapter 9