feat: adding the skin_shader_generator, and gacha base barebone

scripts/managers/user_profile_manager.gd

@@ -20,6 +20,7 @@ signal avatar_changed(url: String)
 var profile: Dictionary = {}
 var stats: Dictionary = {}
 var wallet: Dictionary = {"gold": 0, "star": 0}
+var fragments: Dictionary = {}  # frag_common, frag_uncommon, frag_rare
 var inventory: Array = []
 var loadout: Dictionary = {"head": "", "costume": "", "glove": "", "accessory": ""}
 var shop_catalog: Dictionary = {}
@@ -51,6 +52,7 @@ func _on_auth_completed(success: bool, _user_data: Dictionary) -> void:
 func _on_logged_out() -> void:
 	profile = {}
 	stats = {}
+	fragments = {}
 	is_profile_loaded = false
 
 # =============================================================================
@@ -62,6 +64,7 @@ func load_profile() -> Dictionary:
 	profile = {}
 	stats = {}
 	wallet = {"gold": 0, "star": 0}
+	fragments = {}
 	inventory = []
 	is_profile_loaded = false
 	
@@ -116,6 +119,15 @@ func load_profile() -> Dictionary:
 	# Load stats
 	await load_stats()
 	
+	# Load fragments from storage
+	var frag_result = await NakamaManager.client.read_storage_objects_async(
+		NakamaManager.session,
+		[NakamaStorageObjectId.new(PROFILE_COLLECTION, "fragments", account.user.id)]
+	)
+	if not frag_result.is_exception() and frag_result.objects.size() > 0:
+		var fdata = JSON.parse_string(frag_result.objects[0].value)
+		if fdata is Dictionary: fragments = fdata
+
 	is_profile_loaded = true
 	emit_signal("profile_loaded", profile)
 	print("[UserProfileManager] Profile loaded: ", profile.get("display_name", "Unknown"))
@@ -391,6 +403,14 @@ func _reload_wallet() -> void:
 			wallet["star"] = w_data.get("star", 0)
 			emit_signal("profile_updated")
 
+func save_wallet() -> void:
+	"""Persist wallet deductions and fragment counts to Nakama storage."""
+	if not NakamaManager.session: return
+	var write_objs: Array = [
+		NakamaWriteStorageObject.new(PROFILE_COLLECTION, "fragments", 1, 1, JSON.stringify(fragments), "")
+	]
+	await NakamaManager.client.write_storage_objects_async(NakamaManager.session, write_objs)
+
 # =============================================================================
 # Stats Management
 # =============================================================================