MiningTool (its Execute range-checked against nothing, since no writer ever
set AsteroidBelt/Asteroid) and Zone.MineAsteroid (mints nothing; the
SimpleCommodity drop was commented out) are deleted, per Q1=A: "Bring back
the drill, indeed." Union tag 26 is retired, not reused. ResourceScanner's
dead survey Execute and its scan-target fields go too; its authored Range/
MinimumDensity/ScanDuration stay pending Q2. PlanetSettings.MiningDifficulty
had one reader, now gone.
Chunk wear (damage, broken-until) moves off AsteroidBelt's three per-belt
dictionaries and onto Zone as the one owner (Q3=A): Zone.Wear is the only
writer, ChunkExists/ChunkRadius are the readers, and respawn is a lazy
comparison against zone time, never a per-tick loop. ChunkId is
(CultRecordKey Field, int Index) -- "Field", not "Belt", because chunks are
meant to generalize past asteroid belts to other debris fields later.
Persisted in ZonePack's new key 6 (List<ChunkWearPack>, nullable so an older
record with no key 6 loads with no wear instead of throwing), pruned of
healed, non-broken entries at pack.
The break threshold stays strictly greater-than, matching today's behaviour:
damage exactly equal to hitpoints does not yet break the chunk.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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