Sync working project files - hub layout, boss roster, doc updates

data/body_parts/head_targeting_spike.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "head"
+display_name = "Targeting Spike"
+mod_proj_speed = 208.0
+mod_range = 100.0

data/body_parts/head_wide_angle_lens.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "head"
+display_name = "Wide-Angle Lens"
+mod_range = 120.0
+mod_proj_speed = -104.0

data/body_parts/left_arm_scatter_emitter.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "left_arm"
+display_name = "Scatter Emitter"
+mod_scatter_count = 3
+mod_scatter_spread_deg = 30.0
+mod_damage = -1.4

data/body_parts/left_arm_shield_projector.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "left_arm"
+display_name = "Shield Projector"
+shield_projector = true

data/body_parts/right_arm_heavy_emitter.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "right_arm"
+display_name = "Heavy Emitter"
+mod_damage = 2.1
+mod_fire_rate = -1.4

data/body_parts/right_arm_rapid_emitter.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "right_arm"
+display_name = "Rapid Emitter"
+mod_fire_rate = 1.75
+mod_damage = -1.05

data/body_parts/torso_lightweight_frame.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "torso"
+display_name = "Lightweight Frame"
+mod_speed = 40.0
+mod_max_health = -1.0

data/body_parts/torso_reinforced_chassis.tres

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+[gd_resource type="Resource" script_class="BodyPartData" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/upgrades/body_part_data.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+slot = "torso"
+display_name = "Reinforced Chassis"
+mod_max_health = 2.0
+mod_speed = -20.0

data/run_items/coolant_leak.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Coolant Leak"
+description = "Taking damage leaves a slick trail. Enemies that touch it are slowed for 2s."
+effect = 5

data/run_items/fragmented_map.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Fragmented Map"
+description = "Each time you clear a combat room, one unexplored room on the floor map is revealed."
+effect = 10

data/run_items/memory_spike.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Memory Spike"
+description = "First projectile fired in each room deals 3x damage."
+effect = 7

data/run_items/overclock_module.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Overclock Module"
+description = "Fire rate +40%. Every 3rd shot deals 0 damage."
+effect = 11

data/run_items/patch_kit.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Patch Kit"
+description = "Consumed on pickup: restore 2 HP immediately."
+effect = 4
+heal_on_pickup = 2.0

data/run_items/rust_coat.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Rust Coat"
+description = "Reduce all incoming damage by 1 (minimum 1)."
+effect = 8
+damage_reduction = 1.0

data/run_items/scrap_magnet.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Scrap Magnet"
+description = "Scrap tokens auto-collect within 3 tiles."
+effect = 6
+magnet_radius = 192.0

data/run_items/static_discharge.tres

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+[gd_resource type="Resource" script_class="RunItem" load_steps=2 format=3]
+
+[ext_resource type="Script" path="res://scripts/items/run_item.gd" id="1"]
+
+[resource]
+script = ExtResource("1")
+display_name = "Static Discharge"
+description = "On taking damage, emit a short-range AoE burst (1 tile radius)."
+effect = 9
+discharge_radius = 64.0
+discharge_damage = 1.0