Cobblemon Survival Pack: phases 0-2 and Phase 3 zones and hazards

Free NeoForge 1.21.1 modpack on Cobblemon 1.8.4 built with packwiz, plus
the Kotlin companion mod (cobblesurvival) and its built-in data pack.

- Phase 0: packwiz pack with Modrinth/CurseForge cross-links, build and
  export tooling, Prism instance sync, test server with smoke checks.
- Phase 1: Poke Ball shaped island (WorldGen Editor preset, seed isle-26),
  Adrian's biome list, no natural ore, structures without ore or vanilla
  mobs, no Nether portals, world template builder and world report.
- Phase 2: permadeath (CobbleHardcoreMon plus the companion mod's gap
  fixes), Revival Charm, expensive Healing Machine, Lootr refreshing
  loot, in-game self-tests on Minecraft's GameTest framework.
- Phase 3 so far: 14 zones with their own spawn pools and level bands
  (tools/zone_layout.py, tools/zone_spawns.py, "zone" spawn condition),
  Cold Sweat heat and cold as gates with boss-drop insulation recipes,
  spawn survey and hazard self-tests in tools/quick_check.py.

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

tools/cobblemon_ore_overrides.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+"""Write data-pack overrides that stop Cobblemon's evolution-stone ores from generating.
+
+Cobblemon adds its ore features from code as direct holders, so the
+`neoforge:remove_features` modifier (which matches registry holders) cannot
+remove them. Cobblemon looks each placed feature up by id, though, so an
+override with zero placements under the same id turns it off. Re-run this
+after a Cobblemon update and commit the result.
+
+Usage: tools/cobblemon_ore_overrides.py <Cobblemon jar>
+"""
+import json
+import shutil
+import sys
+import zipfile
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parent.parent
+PREFIX = "data/cobblemon/worldgen/placed_feature/ore/"
+OUT = ROOT / "datapacks/core" / PREFIX
+
+
+def main():
+    if len(sys.argv) != 2:
+        sys.exit(__doc__)
+    jar = zipfile.ZipFile(sys.argv[1])
+    shutil.rmtree(OUT, ignore_errors=True)
+    OUT.mkdir(parents=True)
+    names = sorted(n for n in jar.namelist() if n.startswith(PREFIX) and n.endswith(".json"))
+    for name in names:
+        original = json.loads(jar.read(name))
+        override = {"feature": original["feature"], "placement": [{"type": "minecraft:count", "count": 0}]}
+        (OUT / name[len(PREFIX):]).write_text(json.dumps(override, indent=2) + "\n")
+    print(f"wrote {len(names)} overrides to {OUT.relative_to(ROOT)}")
+
+
+if __name__ == "__main__":
+    main()