feat(ui): show all system names on star map, centered below dots

All named systems get a label below their dot. text_dim for default,
text_primary for selected/hovered. Removed duplicate label from
_draw_selection (now handled by _draw_systems).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

client/ui/star_map.gd

@@ -415,6 +415,26 @@ func _draw_systems(center: Vector2) -> void:
 
 		draw_circle(pos, radius, color)
 
+		# System name label — centered below the dot
+		var label: String = node.get("proper_name", "")
+		if not label.is_empty() and label != sid:
+			var label_color: Color
+			if sid == _selected_system or sid == _hovered_system:
+				label_color = COLOR_TEXT
+			else:
+				label_color = COLOR_TEXT_DIM
+			var font := get_theme_default_font()
+			var label_size := font.get_string_size(label, HORIZONTAL_ALIGNMENT_LEFT, -1, 9)
+			draw_string(
+				font,
+				pos + Vector2(-label_size.x / 2.0, radius + 10.0),
+				label,
+				HORIZONTAL_ALIGNMENT_LEFT,
+				-1,
+				9,
+				label_color,
+			)
+
 
 func _draw_edges(center: Vector2) -> void:
 	# Only draw edges connected to the selected system (full web is unreadable at 301 systems)
@@ -435,24 +455,9 @@ func _draw_selection(center: Vector2) -> void:
 	if not _node_positions.has(_selected_system):
 		return
 	var pos: Vector2 = center + _node_positions[_selected_system] * _zoom
+	# Selection ring only — label is drawn by _draw_systems()
 	draw_arc(pos, SELECTION_RING_RADIUS, 0.0, TAU, 24, COLOR_SELECTION, 1.2, true)
 
-	# Draw label next to selection
-	var node: Dictionary = _node_lookup.get(_selected_system, {})
-	var label: String = node.get("proper_name", _selected_system)
-	if label.is_empty():
-		label = _selected_system
-	var font := get_theme_default_font()
-	draw_string(
-		font,
-		pos + Vector2(SELECTION_RING_RADIUS + 4, 4),
-		label,
-		HORIZONTAL_ALIGNMENT_LEFT,
-		-1,
-		12,
-		COLOR_SELECTION
-	)
-
 
 ## Rebuild the info panel with components for the selected system (D-169).
 func _rebuild_info_panel() -> void: