Gladiator arena: gold economy, outfitting shop, permadeath runs

Turns the sandbox into a survival roguelike loop: outfit your gladiator
with banked gold, enter the arena, earn gold from kills and wave clears,
die, keep 10% of your total value (floored at the 500 fresh-start).

Economy (GameState autoload):
- banked_gold, owned items, and loadout persist to user://save.cfg
- Kill gold (basic 10g, armed 25g) credited server-side to the killer
- Wave-clear bonus (25 + 5/wave) for all players; wave synced to peers
- Death settlement liquidates gear, guarded against double-fire

Character creation / shop:
- Menu reframed: armory shop + live Character Sheet loadout preview
- Character Sheet gains preview mode (renders from loadout, no player)
- Buy/Equip with hand rules; two-handers and off-hands displace each
  other symmetrically (shop and in-game pickups)
- Chosen loadout auto-equips on spawn via existing RPC path

Combat feel:
- Attacks snap to camera facing and lock direction for the swing
- Dash commits to its direction for the full duration
- Weapon slots show name text when no icon is set
- Hitbox/hurtbox debug meshes hidden by default (H toggles)

Death is final: players no longer respawn; a results screen shows waves,
time, kills, and the settlement, then returns to camp. Armed enemies no
longer respawn (were an infinite gold farm and respawned invisible).

level/scripts/enemy_spawner.gd

@@ -71,6 +71,9 @@ func start_wave():
 	print("[EnemySpawner] Starting wave ", current_wave)
 	wave_started.emit(current_wave)
 
+	# Broadcast wave number to every peer's GameState (for HUD + run stats)
+	GameState.server_sync_wave(current_wave)
+
 	# Spawn enemies
 	for i in range(enemies_per_wave):
 		_spawn_enemy(i, enemies_per_wave)
@@ -152,6 +155,10 @@ func _on_enemy_died(killer_id: int, enemy: Node):
 
 	print("[EnemySpawner] Enemy ", enemy.name, " defeated by ", killer_id)
 
+	# Credit kill gold to the killing player (server decides, credits their peer)
+	if killer_id > 0 and Network.players.has(killer_id) and enemy is BaseEnemy:
+		GameState.server_credit_kill(killer_id, enemy.gold_reward)
+
 	# Will be cleaned up in _update_active_enemies
 
 ## Update list of active enemies and check if wave complete
@@ -177,6 +184,11 @@ func _on_wave_completed():
 	print("[EnemySpawner] Wave ", current_wave, " completed!")
 	wave_completed.emit(current_wave)
 
+	# Wave-clear bonus for every living player (scales with wave number)
+	var wave_bonus: int = 25 + current_wave * 5
+	for peer_id in Network.players.keys():
+		GameState.server_credit_gold(peer_id, wave_bonus)
+
 	# Clean up dead enemies after a delay
 	await get_tree().create_timer(2.0).timeout
 	_cleanup_dead_enemies()