feat: implement Date in anlog inputs chart

components/main/analogInputs/AnalogInputsChart.tsx

@@ -113,7 +113,23 @@ export default function AnalogInputsChart({
     responsive: true,
     plugins: {
       legend: { position: "top" as const },
-      tooltip: { mode: "index" as const, intersect: false },
+      tooltip: {
+        mode: "index" as const,
+        intersect: false,
+        callbacks: {
+          label: function (context: import("chart.js").TooltipItem<"line">) {
+            const y = context.parsed.y;
+            return `Messwert: ${y}`;
+          },
+          title: function (
+            tooltipItems: import("chart.js").TooltipItem<"line">[]
+          ) {
+            const date = tooltipItems[0].parsed.x;
+            return `Zeitpunkt: ${new Date(date).toLocaleString("de-DE")}`;
+          },
+        },
+      },
+
       title: {
         display: true,
         text: `Verlauf der letzten 24 Stunden`,
@@ -134,13 +150,13 @@ export default function AnalogInputsChart({
       x: {
         type: "time" as const,
         time: {
-          unit: "hour" as const,
-          tooltipFormat: "HH:mm 'Uhr' dd.MM.",
+          unit: "day", // nur Datum in Achse
+          tooltipFormat: "dd.MM.yyyy HH:mm", // aber Uhrzeit im Tooltip sichtbar
           displayFormats: {
-            hour: "HH:mm",
-            day: "dd.MM.",
+            day: "dd.MM.yyyy",
           },
         },
+
         adapters: {
           date: {
             locale: de,