fix(rendering): checkpoint main-character recovery and visual regression work

Handle late main-character data, guarded model construction, bounded retries and map correction. Validate player model sources and add lifecycle and real-asset visual regressions.

Include pending material and character-selection changes, updated A1 screenshot, and the detailed rendering repair plan. Hair occlusion, full UI parity and final macOS package acceptance remain unfinished.

project/ui/char_select_screen.gd

@@ -305,9 +305,8 @@ func _rebuild_model() -> void:
 		# Expansion armor textures live beside their GR2, outside the base PC pack.
 		var body_path := String(pv.model.get("gr2_path"))
 		pv.model.set("texture_dir", body_path.get_base_dir())
-		# Shape zero uses the head/hair already included in the armor mesh.
-		if int(c.get("hair_part", 0)) == 0:
-			pv.model.set("hair_gr2", "")
+		pv.model.set("lod_enabled", false)
+		pv.model.set("flip_winding", true)
 		pv._ground_model()
 		var intro := pv.motion_dir.get_base_dir().path_join("intro/wait.msa")
 		if pv.anim and FileAccess.file_exists(intro):