fix(client): resolve GDScript autoload parse-order errors

Autoload scripts are parsed before regular scripts, so class_name
types (CharacterVisualDescriptor, TestHarness, YamlParser) are not
available at parse time. Replace type annotations with untyped vars
and use load() for in-body class references. Fixes all 14 headless
parse errors (9 pre-existing + 5 from Sprint 30 changes).

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

client/scripts/autoloads/game_state.gd

@@ -100,7 +100,8 @@ var character_archetype: String = "detective"
 # #705: Character visual descriptor — set by character_creation.gd on confirmation.
 # Passed to EntityRenderer for the player entity's CharacterVisual on game start.
 # Null when no custom appearance has been selected (fallback: default descriptor).
-var character_visual_descriptor: CharacterVisualDescriptor = null
+# Type is CharacterVisualDescriptor — untyped to avoid autoload parse-order issue.
+var character_visual_descriptor = null
 
 # #646: AI-Enhanced Dialogue enabled state (D-138).
 # Runtime toggle — true means the LLM re-voicing pipeline should run (server-side).
@@ -366,7 +367,8 @@ func apply_snapshot(snapshot: Dictionary) -> void:
 	# Server persists the descriptor and includes it in ObserverSnapshot after load.
 	# Only update when field is present (null means no change).
 	if snapshot.has("character_visual_descriptor") and snapshot.character_visual_descriptor is Dictionary:
-		var restored := CharacterVisualDescriptor.from_dict(snapshot.character_visual_descriptor)
+		var CVD := load("res://scripts/rendering/character_visual_descriptor.gd")
+		var restored = CVD.from_dict(snapshot.character_visual_descriptor)
 		if restored != null:
 			character_visual_descriptor = restored