Add blood decals, gore, mobile HUD, web start gate + touch/perf tests

Remove tools/fstest.html scratch page used to probe browser
fullscreen/orientation APIs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EznnY8rH2dXhtono1kwsXg

matador.gd

@@ -102,9 +102,10 @@ func _ready() -> void:
 	_anim_player = _find_anim_player(_mesh)
 	if _skeleton:
 		_sim = MatadorRagdoll.build(_skeleton)
-	# Web (Mali/ANGLE) can't run Compatibility vertex-skinning; rebuild as non-skinned
-	# bone-attached pieces. Runs after the ragdoll sim is built (both drive the same bones).
-	if OS.has_feature("web"):
+	# Native GPU skinning by default; rigid_skin is an opt-in fallback now (the Mali/ANGLE
+	# invisible-skinning bug is fixed in the 4.7 web templates). See Controls.rigid_skin_enabled().
+	# When on, it runs after the ragdoll sim is built (both drive the same bones).
+	if Controls.rigid_skin_enabled():
 		RigidSkin.convert_tree(self)
 	if _anim_player:
 		for anim in [_ANIM_RUN, _ANIM_ATTACK] + _ANIM_TAUNTS:
@@ -973,6 +974,7 @@ func _enter_ragdoll(hit_dir: Vector3, bull_speed: float, up_boost: float = 0.0)
 	var throw_dir := (hit_dir + Vector3(0.0, 0.5, 0.0)).normalized()
 
 	_blood_burst.burst(global_position + Vector3(0.0, 0.9, 0.0), hit_dir)
+	Gore.splat(global_position, hit_dir, 0.55)
 	if _death_player:
 		_death_player.pitch_scale = randf_range(0.9, 1.1)
 		_death_player.play()