Fix NSIS installer build: absolute paths via defines, space-free installed exe, BMP ICO

- makensis resolves relative -DICON/-DARTIFACT against the script directory,
  so CI now passes $PWD-based absolute paths (reproduced locally in the same
  ubuntu:24.04 container; installer builds, 7z shows step-line.exe +
  uninstall.exe)
- Install as step-line.exe (no spaces: NSIS /oname splits on whitespace)
- OutFile overridable via -DOUT
- tools/generate_textures.py icon.ico now produced via ImageMagick with
  classic BMP entries (NSIS-compatible); PIL PNG-compressed ICOs rejected by
  NSIS

src/game/ui/hud.gd

@@ -140,7 +140,7 @@ func _init() -> void:
 	# --- body-camera overlay (REC + shift clock + corner brackets, top right) ---
 	var cam_box := VBoxContainer.new()
 	cam_box.set_anchors_preset(Control.PRESET_TOP_RIGHT)
-	cam_box.position = Vector2(-180, 12)
+	cam_box.position = Vector2(-180, 50)
 	cam_box.alignment = BoxContainer.ALIGNMENT_END
 	add_child(cam_box)
 	var rec_row := HBoxContainer.new()
@@ -380,6 +380,7 @@ func show_inspection(controller: Object, artifacts: Array, result: Dictionary) -
 			continue
 		var card := TextureRect.new()
 		card.texture = tex
+		card.expand_mode = TextureRect.EXPAND_IGNORE_SIZE
 		card.custom_minimum_size = Vector2(92, 58)
 		card.stretch_mode = TextureRect.STRETCH_KEEP_ASPECT_CENTERED
 		card.tooltip_text = artifact.summary()
@@ -388,7 +389,8 @@ func show_inspection(controller: Object, artifacts: Array, result: Dictionary) -
 		card_row.add_child(card)
 		added_card = true
 	if added_card:
-		inspect_panel.add_child(card_row)
+		var content := inspect_panel.get_child(0) as VBoxContainer
+		content.add_child(card_row)
 	var lines: Array[String] = []
 	for artifact in artifacts:
 		lines.append("  • " + artifact.summary())
@@ -409,7 +411,7 @@ func _clear_card_row() -> void:
 		return
 	var row := inspect_panel.find_child("INSPECT_CARD_ROW", true, false) as Control
 	if row:
-		inspect_panel.remove_child(row)
+		row.get_parent().remove_child(row)
 		row.queue_free()
 
 func show_wand(controller: Object, result: Dictionary) -> void: