feat(charting): unify configurable time windows

frontend/src/widgets/QbittorrentSpeedWidget.tsx

@@ -1,7 +1,10 @@
 import { Alert, AlertDescription } from "@/components/ui/alert";
 import { Skeleton } from "@/components/ui/skeleton";
 import { LineSeriesChart } from "../components/LineSeriesChart";
-import { chartRangesThrough } from "../components/chartRanges";
+import {
+	chartRangesThrough,
+	type ChartRangeValue,
+} from "../components/chartRanges";
 import type { ChartSeries } from "../components/LineSeriesChart";
 import type { MetricScale, MetricUnit } from "../lib/metricFormat";
 import { SectionCard } from "../components/SectionCard";
@@ -24,7 +27,11 @@ export function QbittorrentSpeedWidget({
 	// Source returns raw bytes/sec; default to bytes/sec + auto scale (MB/s, …).
 	const unit = (widget.config.unit as MetricUnit) || "bytes_per_sec";
 	const scale = (widget.config.scale as MetricScale) || "auto";
-	const maxRangeSeconds = Number(widget.config.window_seconds) || 1800;
+	const configuredRange = widget.config.window_seconds;
+	const maxRangeSeconds =
+		configuredRange === "all" ? 86_400 : Number(configuredRange) || 1800;
+	const defaultRangeSeconds: ChartRangeValue =
+		configuredRange === "all" ? "all" : maxRangeSeconds;
 
 	return (
 		<SectionCard title={widget.title} description={description}>
@@ -41,7 +48,7 @@ export function QbittorrentSpeedWidget({
 					scale={scale}
 					height={220}
 					rangeOptions={chartRangesThrough(maxRangeSeconds)}
-					defaultRangeSeconds={maxRangeSeconds}
+					defaultRangeSeconds={defaultRangeSeconds}
 				/>
 			) : (
 				<Alert>