Initial commit — Station 0 vertical slice in progress

Includes full design documentation (ARCHITECTURE, DESIGN_NOTES, CONTENT_SPEC, PRODUCTION_NOTES)
and active Godot 4 / GDScript codebase. Core systems built: player, floor generation,
room system, enemy base, body part upgrades, run manager, save system, HUD, EventBus.

scripts/items/run_item.gd

@@ -0,0 +1,46 @@
+extends Resource
+class_name RunItem
+
+enum Effect {
+	STAT_MOD         = 0,   # flat stat modifier
+	RICOCHET         = 1,   # projectiles bounce off walls once
+	SCATTER          = 2,   # fire N projectiles in a spread
+	EXPLOSIVE        = 3,   # projectiles explode on hit
+	HEAL             = 4,   # immediate HP restore on pickup, no ongoing effect
+	COOLANT_LEAK     = 5,   # leaves a slow zone on taking damage
+	SCRAP_MAGNET     = 6,   # scrap tokens auto-attract within magnet_radius
+	MEMORY_SPIKE     = 7,   # first projectile per room deals 3x damage
+	RUST_COAT        = 8,   # incoming damage reduced by damage_reduction (min 1)
+	STATIC_DISCHARGE = 9,   # AoE burst (discharge_radius) on taking damage
+	FRAGMENTED_MAP   = 10,  # reveals one unexplored room on each combat clear
+	OVERCLOCK        = 11,  # fire rate x1.4; every 3rd shot deals 0 damage
+}
+
+@export var display_name:       String = ""
+@export var description:        String = ""
+@export var effect:             Effect = Effect.STAT_MOD
+
+# STAT_MOD
+@export var stat_key:           String = ""     # "speed"|"max_health"|"damage"|"fire_rate"|"range"
+@export var stat_delta:         float  = 0.0
+
+# SCATTER
+@export var scatter_count:      int    = 3
+@export var scatter_spread_deg: float  = 20.0
+
+# EXPLOSIVE
+@export var explosion_radius:   float  = 64.0
+@export var explosion_damage:   float  = 2.5
+
+# HEAL — immediate HP restored on pickup (separate from stat_delta)
+@export var heal_on_pickup:     float  = 0.0
+
+# RUST_COAT
+@export var damage_reduction:   float  = 1.0
+
+# STATIC_DISCHARGE
+@export var discharge_radius:   float  = 64.0
+@export var discharge_damage:   float  = 1.0
+
+# SCRAP_MAGNET
+@export var magnet_radius:      float  = 192.0

scripts/items/run_item_pickup.gd

@@ -0,0 +1,35 @@
+extends Area2D
+
+var item: RunItem = null
+
+func _ready() -> void:
+	body_entered.connect(_on_body_entered)
+
+# Placeholder visual — cyan diamond
+func _draw() -> void:
+	draw_colored_polygon(PackedVector2Array([
+		Vector2(0, -14), Vector2(10, 0), Vector2(0, 14), Vector2(-10, 0)
+	]), Color(0.2, 0.9, 0.85))
+	draw_arc(Vector2.ZERO, 16.0, 0, TAU, 24, Color(0.5, 1.0, 0.95), 1.5)
+
+func _on_body_entered(body: Node) -> void:
+	if not body.is_in_group("player") or item == null:
+		return
+	RunManager.collect_item(item)
+	if item.heal_on_pickup > 0.0:
+		body.stats.heal(item.heal_on_pickup)
+	body.stats.recalculate()
+	EventBus.player_health_changed.emit(body.stats.current_health, body.stats.max_health)
+	_show_pickup_label()
+	queue_free()
+
+func _show_pickup_label() -> void:
+	var lbl        := Label.new()
+	lbl.text        = item.display_name
+	lbl.position    = global_position + Vector2(-40, -20)
+	lbl.modulate    = Color(0.2, 1.0, 0.85)
+	get_tree().current_scene.add_child(lbl)
+	var tween := lbl.create_tween()
+	tween.tween_property(lbl, "position", lbl.position + Vector2(0, -60), 1.2)
+	tween.parallel().tween_property(lbl, "modulate:a", 0.0, 1.2)
+	tween.tween_callback(lbl.queue_free)