feat: add configurable pi statusbar extension

usage/shared.ts

@@ -0,0 +1,10 @@
+export const toNumber = (value: unknown): number | undefined => {
+	if (typeof value === "number" && Number.isFinite(value)) return value;
+	if (typeof value === "string") {
+		const trimmed = value.trim();
+		if (!trimmed) return undefined;
+		const parsed = Number(trimmed);
+		if (Number.isFinite(parsed)) return parsed;
+	}
+	return undefined;
+};