Consolidate raw art under art/ and prune unused assets

Group all raw art by role under art/ (characters, levels, weapons, fx,
anim, textures, ui, icons, fonts, hdri, materials), matching the earlier
code reorg. Files are snake_case; asset uids are preserved so uid:// refs
still resolve, and every res:// path reference is rewritten across scenes,
scripts and project.godot.

- Move the used assets out of Assets/ Animations/ fonts/ HUD/ HDRI/
  Materials/ into art/; remove those dirs.
- Materials snake_cased: barrel_metal, barrel_wood, bear_claw_fx, fire.
- Delete unreferenced assets: alternate models, empty stub scripts,
  superseded BEAR_*.tres, marketing/spare PNGs, a spare font weight and
  the orphan M_Barrel_wood.gdshader.
- Blender: drop .blend auto-backups and matador_v01/v02 (+ stale v02 fbx);
  keep matador_v03 and repoint create_matador_anims.py to it. .gitignore
  now blocks all Blender/*.blend[0-9] backups.
- GLB Extract-Textures siblings (art/levels/*.png) kept and tracked.
- Document the art/ layout in CLAUDE.md.

Headless suite green; menu and gameplay shell boot clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FBbGXbzg3SD6ZBSadPPF5H

levels/arena_level.tscn

@@ -1,7 +1,7 @@
 [gd_scene format=3 uid="uid://co4tgvdpdte4v"]
 
-[ext_resource type="PackedScene" uid="uid://dio67r8ambe7h" path="res://Assets/arena_placeholder_v01.glb" id="2_nxogm"]
-[ext_resource type="PackedScene" uid="uid://cl54dt38yj2x" path="res://Assets/Arena.glb" id="3_fy5k1"]
+[ext_resource type="PackedScene" uid="uid://dio67r8ambe7h" path="res://art/levels/arena_placeholder.glb" id="2_nxogm"]
+[ext_resource type="PackedScene" uid="uid://cl54dt38yj2x" path="res://art/levels/arena.glb" id="3_fy5k1"]
 [ext_resource type="Script" uid="uid://dou5ar6tkmng1" path="res://levels/matador_spawn.gd" id="3_spawn"]
 [ext_resource type="Script" uid="uid://70j3ks1emhkd" path="res://systems/crowd/crowd_marker.gd" id="9_agtuu"]
 [ext_resource type="Script" uid="uid://cj0ytlkuavmf4" path="res://systems/crowd/crowd_billboards.gd" id="11_crowd"]

levels/bear_level.tscn

@@ -1,6 +1,6 @@
 [gd_scene format=3 uid="uid://dfxigg3cr6nl5"]
 
-[ext_resource type="PackedScene" uid="uid://bm6rmt3xprhjs" path="res://Assets/bear_level_arena.glb" id="1_beararena"]
+[ext_resource type="PackedScene" uid="uid://bm6rmt3xprhjs" path="res://art/levels/bear_arena.glb" id="1_beararena"]
 [ext_resource type="Script" uid="uid://bbtlwihtlc1wp" path="res://levels/bear_spawn.gd" id="2_spawn"]
 [ext_resource type="PackedScene" uid="uid://o8ocjfprxa7u" path="res://actors/bear/bear.tscn" id="3_bear"]
 [ext_resource type="Script" uid="uid://dfk7dcvki7rqu" path="res://levels/bear_hud.gd" id="4_bearhud"]

levels/lobby_level.tscn

@@ -2,8 +2,8 @@
 
 [ext_resource type="PackedScene" uid="uid://bbfvwolhomilp" path="res://props/torch.tscn" id="1_w7uyf"]
 [ext_resource type="PackedScene" uid="uid://bd56iuttyiypv" path="res://props/barrel_simple.tscn" id="2_3o0md"]
-[ext_resource type="PackedScene" uid="uid://dctmlh4hnuux1" path="res://Assets/Lobby_underground.glb" id="2_w7uyf"]
-[ext_resource type="Script" uid="uid://cwbf7jfkr8j10" path="res://Assets/lobby_underground.gd" id="4_73452"]
+[ext_resource type="PackedScene" uid="uid://dctmlh4hnuux1" path="res://art/levels/lobby.glb" id="2_w7uyf"]
+[ext_resource type="Script" uid="uid://cwbf7jfkr8j10" path="res://levels/lobby_underground.gd" id="4_73452"]
 [ext_resource type="Script" uid="uid://dn77mjyxllgl6" path="res://levels/to_the_bear_level.gd" id="5_6j2sa"]
 [ext_resource type="Script" uid="uid://cgwliuslwfmbk" path="res://levels/to_the_arena_level.gd" id="6_jmi3x"]
 

levels/lobby_underground.gd

@@ -0,0 +1,15 @@
+extends Node3D
+## Lobby geometry — watches the run state and raises the bear-gate grid once the arena has
+## been cleared. The DP flag stays as a designer override for testing the animation.
+
+var bear_gate_open := false
+
+
+func _process(_delta: float) -> void:
+	if bear_gate_open:
+		return
+	if Run.bear_gate_open() or DP.b("gate_unlocked_bear"):
+		bear_gate_open = true
+		$AnimationPlayer.play("Gate_opening")
+		if DP.b("gamepad_vibration"):
+			Input.start_joy_vibration(0, 0.5, .5, 7)

levels/lobby_underground.gd.uid

@@ -0,0 +1 @@
+uid://cwbf7jfkr8j10