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/ui/scripts/run_results.gd

@@ -0,0 +1,134 @@
+extends Control
+class_name RunResults
+## End-of-run results screen for the gladiator arena.
+## Shown by the HUD when the local player dies. Displays survival stats and
+## the death settlement (keep 10% of total value, floored at the fresh-start
+## default), then returns the player to the menu/camp.
+
+var stats: Dictionary = {}
+
+func setup(run_stats: Dictionary):
+	stats = run_stats
+
+func _ready():
+	# Full-screen dark backdrop
+	set_anchors_preset(Control.PRESET_FULL_RECT)
+	mouse_filter = Control.MOUSE_FILTER_STOP
+
+	var backdrop = ColorRect.new()
+	backdrop.color = Color(0.0, 0.0, 0.0, 0.75)
+	backdrop.set_anchors_preset(Control.PRESET_FULL_RECT)
+	add_child(backdrop)
+
+	# Centered panel
+	var center = CenterContainer.new()
+	center.set_anchors_preset(Control.PRESET_FULL_RECT)
+	add_child(center)
+
+	var panel = PanelContainer.new()
+	panel.custom_minimum_size = Vector2(460, 0)
+	center.add_child(panel)
+
+	var margin = MarginContainer.new()
+	margin.add_theme_constant_override("margin_left", 30)
+	margin.add_theme_constant_override("margin_right", 30)
+	margin.add_theme_constant_override("margin_top", 24)
+	margin.add_theme_constant_override("margin_bottom", 24)
+	panel.add_child(margin)
+
+	var vbox = VBoxContainer.new()
+	vbox.add_theme_constant_override("separation", 8)
+	margin.add_child(vbox)
+
+	# Title
+	var title = Label.new()
+	title.text = "YOU HAVE FALLEN"
+	title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	title.add_theme_font_size_override("font_size", 36)
+	title.add_theme_color_override("font_color", Color(0.9, 0.2, 0.2))
+	vbox.add_child(title)
+
+	var subtitle = Label.new()
+	subtitle.text = "The arena claims another gladiator"
+	subtitle.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	subtitle.add_theme_font_size_override("font_size", 16)
+	subtitle.add_theme_color_override("font_color", Color(0.7, 0.7, 0.7))
+	vbox.add_child(subtitle)
+
+	_add_spacer(vbox, 12)
+
+	# Survival stats
+	_add_header(vbox, "=== SURVIVAL ===")
+	_add_stat_row(vbox, "Waves Survived", str(int(stats.get("waves", 0))))
+	_add_stat_row(vbox, "Time in Arena", _format_time(stats.get("time", 0.0)))
+	_add_stat_row(vbox, "Kills", str(int(stats.get("kills", 0))))
+
+	_add_spacer(vbox, 12)
+
+	# Settlement
+	_add_header(vbox, "=== SETTLEMENT ===")
+	_add_stat_row(vbox, "Gold Earned This Run", str(int(stats.get("gold_earned", 0))))
+	_add_stat_row(vbox, "Total Value at Death", str(int(stats.get("total_value", 0))))
+
+	var kept = int(stats.get("kept", 0))
+	var kept_row = Label.new()
+	kept_row.text = "The arena takes its cut... you keep " + str(kept) + " gold"
+	kept_row.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	kept_row.add_theme_font_size_override("font_size", 18)
+	kept_row.add_theme_color_override("font_color", Color(1.0, 0.8, 0.0))
+	vbox.add_child(kept_row)
+
+	_add_spacer(vbox, 16)
+
+	# Return button
+	var return_button = Button.new()
+	return_button.text = "Return to Camp"
+	return_button.custom_minimum_size = Vector2(0, 44)
+	return_button.pressed.connect(_on_return_pressed)
+	vbox.add_child(return_button)
+
+	# Make sure the mouse is usable on the overlay
+	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
+
+func _add_header(parent: Control, text: String):
+	var label = Label.new()
+	label.text = text
+	label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
+	label.add_theme_font_size_override("font_size", 16)
+	label.add_theme_color_override("font_color", Color(0.8, 0.8, 0.8))
+	parent.add_child(label)
+
+func _add_stat_row(parent: Control, label_text: String, value_text: String):
+	var row = HBoxContainer.new()
+	var label = Label.new()
+	label.text = label_text
+	label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
+	label.add_theme_font_size_override("font_size", 16)
+	row.add_child(label)
+
+	var value = Label.new()
+	value.text = value_text
+	value.add_theme_font_size_override("font_size", 16)
+	value.add_theme_color_override("font_color", Color(1.0, 0.8, 0.0))
+	row.add_child(value)
+	parent.add_child(row)
+
+func _add_spacer(parent: Control, height: int):
+	var spacer = Control.new()
+	spacer.custom_minimum_size = Vector2(0, height)
+	parent.add_child(spacer)
+
+func _format_time(seconds: float) -> String:
+	var total = int(seconds)
+	return "%dm %02ds" % [total / 60, total % 60]
+
+func _on_return_pressed():
+	# Tear down the multiplayer session and go back to the menu.
+	# (Host quitting ends the session for connected clients - acceptable for now.)
+	multiplayer.multiplayer_peer = null
+	Network.players.clear()
+
+	if has_node("/root/HUD"):
+		get_node("/root/HUD").reset()
+
+	get_tree().reload_current_scene()