Phase 4 play-test fixes: deep caves, fuller cave spawns, strays, shared loot

From Adrian's play-test (2026-10-30):
- The Deep Dark no longer fills the deepslate layer: world/biomes.json
  splits it by temperature (Deep Dark under cold and temperate land,
  basalt deltas under the hottest, ordinary caves between); at y -52 it
  drops from 30 % to 14 % of the land, basalt 7 %.
- Cave zones fill up to their targets with lines whose primary type fits
  the cave; top stages spawn up to the band's top (Deep Dark Lv 60, Basalt
  70); no time-of-day conditions underground.
- Wild Pokemon more than 10 levels above the band of the zone they
  wander into despawn (zone/Wanderers.kt).
- Loot is shared: all players in one scoreboard team, Lootr team_loot.
- Basalt ore nodes reach the deep basalt.
Self-tests strays_despawn and loot_is_shared; the catching rules from the
previous commit are now tested too. Template rebuilt (world check passed),
island quick check passed (36 self-tests and the restart test).
Shoulder Pokemon noted for Phase 5.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

pack/config/regenerating_ore_veins/veins.json

@@ -283,14 +283,7 @@
    "southwold_109",
    "southwold_110",
    "southwold_111",
-   "southwold_112",
-   "southwold_113",
-   "southwold_114",
-   "southwold_115",
-   "southwold_116",
-   "southwold_117",
-   "southwold_118",
-   "southwold_119"
+   "southwold_112"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -436,14 +429,7 @@
    "southwold_109",
    "southwold_110",
    "southwold_111",
-   "southwold_112",
-   "southwold_113",
-   "southwold_114",
-   "southwold_115",
-   "southwold_116",
-   "southwold_117",
-   "southwold_118",
-   "southwold_119"
+   "southwold_112"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -558,7 +544,14 @@
    "westmarch_50",
    "westmarch_51",
    "westmarch_52",
-   "westmarch_53"
+   "westmarch_53",
+   "westmarch_54",
+   "westmarch_55",
+   "westmarch_56",
+   "westmarch_57",
+   "westmarch_58",
+   "westmarch_59",
+   "westmarch_60"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -645,7 +638,14 @@
    "westmarch_50",
    "westmarch_51",
    "westmarch_52",
-   "westmarch_53"
+   "westmarch_53",
+   "westmarch_54",
+   "westmarch_55",
+   "westmarch_56",
+   "westmarch_57",
+   "westmarch_58",
+   "westmarch_59",
+   "westmarch_60"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -773,11 +773,7 @@
    "jungle_63",
    "jungle_64",
    "jungle_65",
-   "jungle_66",
-   "jungle_67",
-   "jungle_68",
-   "jungle_69",
-   "jungle_70"
+   "jungle_66"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -877,11 +873,7 @@
    "jungle_63",
    "jungle_64",
    "jungle_65",
-   "jungle_66",
-   "jungle_67",
-   "jungle_68",
-   "jungle_69",
-   "jungle_70"
+   "jungle_66"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1092,14 +1084,7 @@
    "highlands_146",
    "highlands_147",
    "highlands_148",
-   "highlands_149",
-   "highlands_150",
-   "highlands_151",
-   "highlands_152",
-   "highlands_153",
-   "highlands_154",
-   "highlands_155",
-   "highlands_156"
+   "highlands_149"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1282,14 +1267,7 @@
    "highlands_146",
    "highlands_147",
    "highlands_148",
-   "highlands_149",
-   "highlands_150",
-   "highlands_151",
-   "highlands_152",
-   "highlands_153",
-   "highlands_154",
-   "highlands_155",
-   "highlands_156"
+   "highlands_149"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1399,7 +1377,11 @@
    "sunscorch_45",
    "sunscorch_46",
    "sunscorch_47",
-   "sunscorch_48"
+   "sunscorch_48",
+   "sunscorch_49",
+   "sunscorch_50",
+   "sunscorch_51",
+   "sunscorch_52"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1481,7 +1463,11 @@
    "sunscorch_45",
    "sunscorch_46",
    "sunscorch_47",
-   "sunscorch_48"
+   "sunscorch_48",
+   "sunscorch_49",
+   "sunscorch_50",
+   "sunscorch_51",
+   "sunscorch_52"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1634,7 +1620,9 @@
    "frostpeak_88",
    "frostpeak_89",
    "frostpeak_90",
-   "frostpeak_91"
+   "frostpeak_91",
+   "frostpeak_92",
+   "frostpeak_93"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1759,7 +1747,9 @@
    "frostpeak_88",
    "frostpeak_89",
    "frostpeak_90",
-   "frostpeak_91"
+   "frostpeak_91",
+   "frostpeak_92",
+   "frostpeak_93"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -1988,7 +1978,14 @@
    "westmarch_50",
    "westmarch_51",
    "westmarch_52",
-   "westmarch_53"
+   "westmarch_53",
+   "westmarch_54",
+   "westmarch_55",
+   "westmarch_56",
+   "westmarch_57",
+   "westmarch_58",
+   "westmarch_59",
+   "westmarch_60"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -2075,7 +2072,14 @@
    "westmarch_50",
    "westmarch_51",
    "westmarch_52",
-   "westmarch_53"
+   "westmarch_53",
+   "westmarch_54",
+   "westmarch_55",
+   "westmarch_56",
+   "westmarch_57",
+   "westmarch_58",
+   "westmarch_59",
+   "westmarch_60"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -2231,11 +2235,7 @@
    "jungle_63",
    "jungle_64",
    "jungle_65",
-   "jungle_66",
-   "jungle_67",
-   "jungle_68",
-   "jungle_69",
-   "jungle_70"
+   "jungle_66"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -2335,11 +2335,7 @@
    "jungle_63",
    "jungle_64",
    "jungle_65",
-   "jungle_66",
-   "jungle_67",
-   "jungle_68",
-   "jungle_69",
-   "jungle_70"
+   "jungle_66"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -2786,14 +2782,7 @@
    "highlands_146",
    "highlands_147",
    "highlands_148",
-   "highlands_149",
-   "highlands_150",
-   "highlands_151",
-   "highlands_152",
-   "highlands_153",
-   "highlands_154",
-   "highlands_155",
-   "highlands_156"
+   "highlands_149"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -2976,14 +2965,7 @@
    "highlands_146",
    "highlands_147",
    "highlands_148",
-   "highlands_149",
-   "highlands_150",
-   "highlands_151",
-   "highlands_152",
-   "highlands_153",
-   "highlands_154",
-   "highlands_155",
-   "highlands_156"
+   "highlands_149"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -3093,7 +3075,11 @@
    "sunscorch_45",
    "sunscorch_46",
    "sunscorch_47",
-   "sunscorch_48"
+   "sunscorch_48",
+   "sunscorch_49",
+   "sunscorch_50",
+   "sunscorch_51",
+   "sunscorch_52"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -3175,7 +3161,11 @@
    "sunscorch_45",
    "sunscorch_46",
    "sunscorch_47",
-   "sunscorch_48"
+   "sunscorch_48",
+   "sunscorch_49",
+   "sunscorch_50",
+   "sunscorch_51",
+   "sunscorch_52"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -3328,7 +3318,9 @@
    "frostpeak_88",
    "frostpeak_89",
    "frostpeak_90",
-   "frostpeak_91"
+   "frostpeak_91",
+   "frostpeak_92",
+   "frostpeak_93"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -3453,7 +3445,9 @@
    "frostpeak_88",
    "frostpeak_89",
    "frostpeak_90",
-   "frostpeak_91"
+   "frostpeak_91",
+   "frostpeak_92",
+   "frostpeak_93"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -3606,7 +3600,9 @@
    "frostpeak_88",
    "frostpeak_89",
    "frostpeak_90",
-   "frostpeak_91"
+   "frostpeak_91",
+   "frostpeak_92",
+   "frostpeak_93"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",
@@ -3731,7 +3727,9 @@
    "frostpeak_88",
    "frostpeak_89",
    "frostpeak_90",
-   "frostpeak_91"
+   "frostpeak_91",
+   "frostpeak_92",
+   "frostpeak_93"
   ],
   "biome_blacklist": [
    "minecraft:basalt_deltas",