fix(heyhe): correct egg spawn, fix taming, skinny model, wonky eyes, persistent

- heyhe_egg: rebuild spawn mechanism with component groups (spawn_entity/die
  can't live in event sequences — follow dragon_egg pattern exactly)
- heyhe_chicken: move interact to base components so taming always works
  regardless of spawn method; add persistent to stop vanishing
- Geometry: skinny tall body, thin neck, proper UV coordinates throughout
- Texture: fill whole atlas white first (no dark gaps), matched UV regions,
  wonky asymmetric eyes (one big+high, one small+low)
- Animation: neck peck 3x per cycle at 22deg, body sway on walk, wing flutter

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

addon/heyhe_pet_BP/entities/heyhe_egg.json

@@ -8,58 +8,69 @@
       "is_experimental": false
     },
 
-    "components": {
-      "minecraft:type_family": {
-        "family": ["heyhe_egg"]
-      },
-      "minecraft:collision_box": {
-        "width": 0.5,
-        "height": 0.6
-      },
-      "minecraft:physics": {
-        "has_gravity": true,
-        "has_collision": true
-      },
-      "minecraft:pushable": {
-        "is_pushable": false,
-        "is_pushable_by_piston": false
-      },
-      "minecraft:health": {
-        "value": 5,
-        "max": 5
-      },
-      "minecraft:timer": {
-        "looping": false,
-        "time": 10,
-        "time_down_event": {
-          "event": "silverlabs:hatch",
-          "target": "self"
+    "component_groups": {
+
+      "silverlabs:egg_waiting": {
+        "minecraft:timer": {
+          "looping": false,
+          "time": 10,
+          "time_down_event": {
+            "event": "silverlabs:start_hatching",
+            "target": "self"
+          }
         }
       },
-      "minecraft:ambient_sound_interval": {
-        "event_name": "mob.chicken.egg",
-        "range": 0,
-        "value": 8
+
+      "silverlabs:egg_hatching": {
+        "minecraft:spawn_entity": {
+          "entities": [
+            {
+              "min_wait_time": 0,
+              "max_wait_time": 1,
+              "spawn_sound": "mob.chicken.egg",
+              "spawn_entity": "silverlabs:heyhe_chicken",
+              "spawn_event": "silverlabs:hatched",
+              "num_to_spawn": 1,
+              "single_use": true
+            }
+          ]
+        },
+        "minecraft:timer": {
+          "looping": false,
+          "time": 2,
+          "time_down_event": {
+            "event": "silverlabs:despawn_egg",
+            "target": "self"
+          }
+        }
+      },
+
+      "silverlabs:egg_despawning": {
+        "minecraft:instant_despawn": {}
       }
+
+    },
+
+    "components": {
+      "minecraft:type_family": { "family": ["heyhe_egg"] },
+      "minecraft:physics": { "has_gravity": true, "has_collision": true },
+      "minecraft:collision_box": { "width": 0.5, "height": 0.6 },
+      "minecraft:pushable": { "is_pushable": false, "is_pushable_by_piston": false },
+      "minecraft:knockback_resistance": { "value": 1.0 },
+      "minecraft:persistent": {},
+      "minecraft:health": { "value": 5, "max": 5 }
     },
 
     "events": {
-      "silverlabs:hatch": {
-        "sequence": [
-          {
-            "spawn_entity": {
-              "entities_to_spawn": [
-                {
-                  "entity_type": "silverlabs:heyhe_chicken",
-                  "num_to_spawn": 1
-                }
-              ]
-            }
-          },
-          {
-            "die": {}
-          }
-        ]
+      "minecraft:entity_spawned": {
+        "add": { "component_groups": ["silverlabs:egg_waiting"] }
+      },
+      "silverlabs:start_hatching": {
+        "remove": { "component_groups": ["silverlabs:egg_waiting"] },
+        "add": { "component_groups": ["silverlabs:egg_hatching"] }
+      },
+      "silverlabs:despawn_egg": {
+        "add": { "component_groups": ["silverlabs:egg_despawning"] }
       }
     }
   }