feat(anthrax-cat): add craftable item, recipe, and inventory entry

- Custom item silverlabs:anthrax_cat with entity_placer — place cat by right-clicking ground
- Shaped recipe: 4 gold ingots + 1 red dye (cross pattern) at crafting table
- Recipe unlocks when player has a gold ingot
- Item appears in creative inventory under Items > Misc
- Item icon: 16x16 Maneki-neko pixel art
- Set is_spawnable: false on entity (use crafted item instead of spawn egg)

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

addon/anthrax_cat_BP/entities/anthrax_cat.json

@@ -3,7 +3,7 @@
   "minecraft:entity": {
     "description": {
       "identifier": "silverlabs:anthrax_cat",
-      "is_spawnable": true,
+      "is_spawnable": false,
       "is_summonable": true,
       "is_experimental": false
     },

addon/anthrax_cat_BP/items/anthrax_cat.json

@@ -0,0 +1,21 @@
+{
+  "format_version": "1.21.0",
+  "minecraft:item": {
+    "description": {
+      "identifier": "silverlabs:anthrax_cat",
+      "menu_category": {
+        "category": "items",
+        "group": "itemGroup.name.misc"
+      }
+    },
+    "components": {
+      "minecraft:max_stack_size": 16,
+      "minecraft:icon": {
+        "texture": "anthrax_cat"
+      },
+      "minecraft:entity_placer": {
+        "entity": "silverlabs:anthrax_cat"
+      }
+    }
+  }
+}

addon/anthrax_cat_BP/recipes/anthrax_cat.json

@@ -0,0 +1,25 @@
+{
+  "format_version": "1.21.0",
+  "minecraft:recipe_shaped": {
+    "description": {
+      "identifier": "silverlabs:anthrax_cat_recipe"
+    },
+    "tags": ["crafting_table"],
+    "unlock": [
+      { "item": "minecraft:gold_ingot" }
+    ],
+    "pattern": [
+      " G ",
+      "GRG",
+      " G "
+    ],
+    "key": {
+      "G": { "item": "minecraft:gold_ingot" },
+      "R": { "item": "minecraft:red_dye" }
+    },
+    "result": {
+      "item": "silverlabs:anthrax_cat",
+      "count": 1
+    }
+  }
+}

addon/anthrax_cat_RP/texts/en_US.lang

@@ -1,2 +1,3 @@
 entity.silverlabs:anthrax_cat.name=Anthrax Cat
+item.silverlabs:anthrax_cat.name=Anthrax Cat
 action.interact.fortune=Consult the Anthrax Cat

addon/anthrax_cat_RP/textures/item_texture.json

@@ -0,0 +1,9 @@
+{
+  "resource_pack_name": "anthrax_cat_RP",
+  "texture_name": "atlas.items",
+  "texture_data": {
+    "anthrax_cat": {
+      "textures": "textures/items/anthrax_cat"
+    }
+  }
+}