feat(spark_pet): major overhaul — traits, animations, riding, fire, coloured hatching

- Movement: slower follow (speed 0.3, stop_dist 5), near-zero teleport chance
- Scales: baby 0.65, juvenile 0.9, adult 1.3 (up from 0.4/0.7/1.0)
- Personality traits (0–4): set by feeding specific foods while sneaking;
  affects stroll range, follow distance, look-at-player frequency
- Passtime animations driven by pure Molang lifecycle math (no timer components):
  groom, sniff, stretch, happy_bounce cycling ~every 3 min per dragon
- Rideable adults: minecraft:rideable + input_ground_controlled, seat at [0,0.9,-0.3]
- Fire breathing: autonomous vs monsters (radius 16) + player-triggered (sneak + fire_charge)
- New hatching system: 6 nest block variants (oak/spruce/jungle/crimson/warped/obsidian),
  craft nest + dragon_egg → coloured egg item; place egg, bonemeal + blaze powder → hatch;
  dragon colour matches nest type via 6 separate egg entity types + born_color events
- 18 new PNG textures: 6 dragon colours, 6 nest blocks, 6 egg items (HSV hue rotation)
- Render controller updated to use texture array indexed by silverlabs:dragon_color property

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

addon/spark_pet_RP/textures/item_texture.json

@@ -8,6 +8,24 @@
     "dragon_egg": {
       "textures": "textures/items/dragon_egg"
     },
+    "dragon_egg_oak": {
+      "textures": "textures/items/dragon_egg_oak"
+    },
+    "dragon_egg_spruce": {
+      "textures": "textures/items/dragon_egg_spruce"
+    },
+    "dragon_egg_jungle": {
+      "textures": "textures/items/dragon_egg_jungle"
+    },
+    "dragon_egg_crimson": {
+      "textures": "textures/items/dragon_egg_crimson"
+    },
+    "dragon_egg_warped": {
+      "textures": "textures/items/dragon_egg_warped"
+    },
+    "dragon_egg_obsidian": {
+      "textures": "textures/items/dragon_egg_obsidian"
+    },
     "dragon_toy": {
       "textures": "textures/items/dragon_toy"
     },

addon/spark_pet_RP/textures/terrain_texture.json

@@ -6,6 +6,24 @@
   "texture_data": {
     "dragon_basket": {
       "textures": "textures/blocks/dragon_basket"
+    },
+    "dragon_nest_oak": {
+      "textures": "textures/blocks/dragon_nest_oak"
+    },
+    "dragon_nest_spruce": {
+      "textures": "textures/blocks/dragon_nest_spruce"
+    },
+    "dragon_nest_jungle": {
+      "textures": "textures/blocks/dragon_nest_jungle"
+    },
+    "dragon_nest_crimson": {
+      "textures": "textures/blocks/dragon_nest_crimson"
+    },
+    "dragon_nest_warped": {
+      "textures": "textures/blocks/dragon_nest_warped"
+    },
+    "dragon_nest_obsidian": {
+      "textures": "textures/blocks/dragon_nest_obsidian"
     }
   }
 }