Added a connection status element that shows current link usage and packet loss.

scripts/link_rate.gd

@@ -0,0 +1,44 @@
+@tool
+extends Control
+
+@export var direction := "↓ DOWNLINK"
+var capacity_gbps := 10.0
+var warning_fraction := 0.8
+var fault_fraction := 0.95
+var rate_gbps := 0.0
+var available := false
+
+func _ready() -> void:
+	resized.connect(queue_redraw)
+	theme_changed.connect(queue_redraw)
+	refresh()
+
+func utilization() -> float:
+	return rate_gbps / maxf(capacity_gbps, 0.001)
+
+func severity() -> int:
+	if not available:
+		return 0
+	return 2 if utilization() >= fault_fraction else (1 if utilization() >= warning_fraction else 0)
+
+func refresh() -> void:
+	if not is_node_ready():
+		return
+	%Direction.text = direction
+	%Direction.theme_type_variation = "LinkMuted" if not available else ["LinkRateNormal", "LinkRateWarning", "LinkRateFault"][severity()]
+	%Value.text = "%.2f" % rate_gbps if available else "—"
+	%Capacity.text = "%s Gbps max" % String.num(capacity_gbps, 2)
+	queue_redraw()
+
+func _draw() -> void:
+	var radius := maxf(1.0, minf(size.x, size.y) / 2 - 6)
+	var center := size / 2
+	var start := deg_to_rad(140)
+	var sweep := deg_to_rad(260)
+	draw_arc(center, radius, start, start + sweep, 96, get_theme_color("instrument_grid", "SurfaceSide"), 3, true)
+	for fraction in [warning_fraction, fault_fraction]:
+		var radial := Vector2.from_angle(start + sweep * fraction)
+		draw_line(center + radial * (radius - 4), center + radial * (radius + 4), get_theme_color("instrument_axis", "SurfaceSide"), 1, true)
+	if available and rate_gbps > 0:
+		var role: String = ["instrument_accent", "warning", "fault"][severity()]
+		draw_arc(center, radius, start, start + sweep * clampf(utilization(), 0, 1), 96, get_theme_color(role, "SurfaceSide"), 4, true)