diff --git a/client/scripts/autoloads/hud_groups.gd b/client/scripts/autoloads/hud_groups.gd
index 9144c02f5..c519c82bb 100644
--- a/client/scripts/autoloads/hud_groups.gd
+++ b/client/scripts/autoloads/hud_groups.gd
@@ -22,6 +22,15 @@ extends Node
 ##   HudGroups.close_app()
 ##   HudGroups.toggle_app("implant/map/starchart")
 
+## Emitted when an app opens, closes, or changes mode.
+## mode is a HudGroups.Mode enum value.
+signal app_changed(app_path: String, mode: int)
+
+## Emitted when gameplay rendering should pause or resume.
+## Fullscreen implant apps occlude gameplay — expensive renderers (world,
+## fog, entities) should skip draw calls while this is true.
+signal gameplay_occluded(occluded: bool)
+
 enum Mode { GAMEPLAY, INSERT, FULLSCREEN }
 
 ## Z-index values for each mode. Gameplay is the base layer.
@@ -30,18 +39,8 @@ const Z_INSERT: int = 10
 const Z_FULLSCREEN: int = 20
 const Z_MODAL: int = 30
 
-## Emitted when an app opens, closes, or changes mode.
-## Listeners can use this to adapt their layout (e.g. resize to fullscreen).
-signal app_changed(app_path: String, mode: Mode)
-
-## Emitted when gameplay rendering should pause or resume.
-## Fullscreen implant apps occlude gameplay — expensive renderers (world,
-## fog, entities) should skip draw calls while this is true.
-## Connect from any renderer: HudGroups.gameplay_occluded.connect(_on_occluded)
-signal gameplay_occluded(occluded: bool)
-
-var _groups: Dictionary = {}        # group_path -> Array[CanvasItem]
-var _active_app: String = ""        # currently focused implant app ("" = none)
+var _groups: Dictionary = {}  # group_path -> Array[CanvasItem]
+var _active_app: String = ""  # currently focused implant app ("" = none)
 var _active_mode: Mode = Mode.GAMEPLAY
 
 
diff --git a/client/scripts/rendering/world_renderer.gd b/client/scripts/rendering/world_renderer.gd
index c84969776..1b8572a9a 100644
--- a/client/scripts/rendering/world_renderer.gd
+++ b/client/scripts/rendering/world_renderer.gd
@@ -14,6 +14,7 @@ extends Node2D
 #   FogOverlay (Node2D)              — z:900 fog shader (OUTSIDE FogGroup)
 
 var _last_tick: int = -1
+var _occluded: bool = false  # D-170: skip rendering when fullscreen implant app is covering us
 
 @onready var tile_renderer = $FogGroup/FloorTiles
 @onready var fog_renderer = $FogOverlay
@@ -21,9 +22,6 @@ var _last_tick: int = -1
 @onready var sound_indicator_renderer = $SoundIndicators  # #126 D-018 medium-range indicators
 
 
-var _occluded: bool = false  # D-170: skip rendering when fullscreen implant app is covering us
-
-
 func _ready() -> void:
 	HudGroups.gameplay_occluded.connect(_on_gameplay_occluded)
 	print("WorldRenderer: Initialized (D-049 z-stack)")
diff --git a/client/ui/star_map.gd b/client/ui/star_map.gd
index dc279f92a..9f5f9ba22 100644
--- a/client/ui/star_map.gd
+++ b/client/ui/star_map.gd
@@ -149,7 +149,7 @@ func toggle_visible() -> void:
 
 
 ## Respond to app layer changes (D-170).
-func _on_app_changed(app_path: String, mode: HudGroups.Mode) -> void:
+func _on_app_changed(app_path: String, mode: int) -> void:
 	if app_path != "implant/map/starchart":
 		return
 	if mode == HudGroups.Mode.FULLSCREEN or mode == HudGroups.Mode.INSERT: