M1d: creatures, hunting, weapons, food buffs and the hide cloak

- Rabbits, deer and boars with procedural meshes and animated legs, a
  state machine (idle/wander/flee/charge/dead) and heightmap steering that
  avoids water, cliffs, the world edge, trees and buildings
- Spawner keeps a habitat-based budget around the player (6/4/3)
- Melee needs a weapon or tool (club, spear, axe, pickaxe); box sweep hits
- Wooden spear (thrust or throw) and crude bow with draw-scaled arrows;
  projectiles stick in the world as saved pickups
- Carcasses: E to butcher for meat, hide and embedded arrows
- Boars charge and gore when hit; hurt flash and a brief healing pause
- Cooked meat gives Well fed (faster stamina and healing); buffs saved
- Hide cloak: wear for warmth, saved, goes in the grave on death
- Feathers as meadow pickups (appended, existing save ids unchanged)
- New test_creatures_combat suite; run_all.sh gets a per-suite time limit

data/items.json

@@ -65,12 +65,13 @@
       "name": "Wooden Club",
       "category": "weapon",
       "stack": 1,
-      "description": "Crude, heavy, effective. (Creatures arrive in M1d.)",
+      "description": "Crude, heavy, effective. One blow fells a rabbit.",
       "mesh": "club",
       "weapon": {
         "damage": 12,
-        "reach": 2.2,
-        "stamina": 8
+        "reach": 2.4,
+        "stamina": 8,
+        "cooldown": 0.55
       }
     },
     {
@@ -266,6 +267,113 @@
           2.1
         ]
       }
+    },
+    {
+      "id": "raw_meat",
+      "name": "Raw Meat",
+      "category": "food",
+      "stack": 20,
+      "description": "Cook it at a campfire. Eaten raw it barely helps.",
+      "mesh": "raw_meat",
+      "food": {
+        "hunger": 5,
+        "health": -4
+      }
+    },
+    {
+      "id": "cooked_meat",
+      "name": "Cooked Meat",
+      "category": "food",
+      "stack": 20,
+      "description": "Hearty. Leaves you Well fed: faster stamina and healing for 10 minutes.",
+      "mesh": "cooked_meat",
+      "food": {
+        "hunger": 34,
+        "health": 12,
+        "buff": {
+          "id": "well_fed",
+          "name": "Well fed",
+          "seconds": 600,
+          "stamina_regen": 1.3,
+          "health_regen": 2.0
+        }
+      }
+    },
+    {
+      "id": "hide",
+      "name": "Hide",
+      "category": "resource",
+      "stack": 20,
+      "description": "Raw hide from a deer or boar. Makes a warm cloak.",
+      "mesh": "hide"
+    },
+    {
+      "id": "feather",
+      "name": "Feather",
+      "category": "resource",
+      "stack": 50,
+      "description": "Found in meadows. Fletching for arrows.",
+      "mesh": "feather"
+    },
+    {
+      "id": "spear",
+      "name": "Wooden Spear",
+      "category": "weapon",
+      "stack": 1,
+      "description": "LMB thrusts (long reach). RMB throws it: pick it up again where it lands.",
+      "mesh": "spear",
+      "weapon": {
+        "damage": 18,
+        "reach": 3.1,
+        "stamina": 10,
+        "cooldown": 0.6,
+        "throw": {
+          "damage": 30,
+          "speed": 24.0,
+          "stamina": 14
+        }
+      }
+    },
+    {
+      "id": "bow",
+      "name": "Crude Bow",
+      "category": "weapon",
+      "stack": 1,
+      "description": "Hold LMB to draw, release to shoot. Uses arrows.",
+      "mesh": "bow",
+      "bow": {
+        "ammo": "arrow",
+        "draw": 0.9,
+        "damage": [
+          8,
+          32
+        ],
+        "speed": [
+          16.0,
+          46.0
+        ],
+        "stamina": 6
+      }
+    },
+    {
+      "id": "arrow",
+      "name": "Flint Arrow",
+      "category": "weapon",
+      "stack": 50,
+      "description": "Ammunition for the bow. Arrows that miss can be picked up again.",
+      "mesh": "arrow"
+    },
+    {
+      "id": "hide_cloak",
+      "name": "Hide Cloak",
+      "category": "tool",
+      "stack": 1,
+      "description": "Right-click to wear it (+15 warmth, less chill from wet). Take it off from the inventory screen.",
+      "mesh": "hide_cloak",
+      "wear": {
+        "warmth": 15,
+        "wet_chill": 0.6
+      }
     }
   ]
 }

data/recipes.json

@@ -134,6 +134,57 @@
         "wood": 8,
         "fiber": 6
       }
+    },
+    {
+      "id": "cooked_meat",
+      "output": "cooked_meat",
+      "count": 1,
+      "station": "campfire",
+      "inputs": {
+        "raw_meat": 1
+      }
+    },
+    {
+      "id": "spear",
+      "output": "spear",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 3,
+        "flint": 2,
+        "fiber": 1
+      }
+    },
+    {
+      "id": "bow",
+      "output": "bow",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "wood": 4,
+        "fiber": 6
+      }
+    },
+    {
+      "id": "arrow",
+      "output": "arrow",
+      "count": 5,
+      "station": "workbench",
+      "inputs": {
+        "stick": 2,
+        "flint": 1,
+        "feather": 2
+      }
+    },
+    {
+      "id": "hide_cloak",
+      "output": "hide_cloak",
+      "count": 1,
+      "station": "workbench",
+      "inputs": {
+        "hide": 4,
+        "fiber": 4
+      }
     }
   ]
 }