build(magic-civ-physics): 📦️ Rebuild physics engine and update wilds.json to improve terrain collision, spawn rates, and erosion rules

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

public/resources/wilds/wilds.json

@@ -2,7 +2,7 @@
   "wilds": {
     "id": "wilds",
     "lair_density_per_land_tile": 0.0083,
-    "min_distance_from_start": 5,
+    "min_distance_from_start": 8,
     "min_distance_between": 4,
     "spawn_interval_base": 8,
     "max_creatures_per_lair": 3,
@@ -167,7 +167,11 @@
         "id": "ancient_construct_site",
         "loot_table": [
           { "resource": "arcane_gears", "amount": 2, "chance": 0.8 },
-          { "resource": "stone_core", "amount": 1, "chance": 0.5 }
+          { "resource": "stone_core", "amount": 1, "chance": 0.5 },
+          { "type": "item", "item": "golem_core", "tier": 8, "chance": 0.05 },
+          { "type": "item", "item": "constructor_lens", "tier": 8, "chance": 0.05 },
+          { "type": "item", "item": "phase_gauntlet", "tier": 9, "chance": 0.025 },
+          { "type": "item", "item": "crown_of_the_mountain", "tier": 10, "chance": 0.01 }
         ]
       },
       "wyvern_nest": {