Add lines to graph and mini graph for this time prior days

LoopFollow/Controllers/Graphs.swift

@@ -765,6 +765,41 @@ extension MainViewController {
                 midnightTimeInterval = midnightTimeInterval.advanced(by: -24 * 60 * 60)
             }
         }
+
+        // Draw "same time" lines on prior days (orange dotted lines)
+        createSameTimeLines()
+    }
+
+    func createSameTimeLines() {
+        // Draw orange dotted lines at the current time of day on each prior day
+        // This helps visualize what was happening at this same time yesterday, etc.
+        let now = dateTimeUtils.getNowTimeIntervalUTC()
+        let graphHours = 24 * Storage.shared.downloadDays.value
+        let graphStart = dateTimeUtils.getTimeIntervalNHoursAgo(N: graphHours)
+
+        // Start from 24 hours ago (yesterday at this time) and go back
+        var priorDayTime = now - (24 * 60 * 60)
+
+        while priorDayTime > graphStart {
+            // Large chart - orange dotted line (same style as teal midnight lines)
+            let ul = ChartLimitLine()
+            ul.limit = Double(priorDayTime)
+            ul.lineColor = NSUIColor.systemOrange.withAlphaComponent(0.5)
+            ul.lineDashLengths = [CGFloat(2), CGFloat(5)]
+            ul.lineWidth = 1
+            BGChart.xAxis.addLimitLine(ul)
+
+            // Small chart - orange dotted line
+            let sl = ChartLimitLine()
+            sl.limit = Double(priorDayTime)
+            sl.lineColor = NSUIColor.systemOrange
+            sl.lineDashLengths = [CGFloat(2), CGFloat(2)]
+            sl.lineWidth = 1
+            BGChartFull.xAxis.addLimitLine(sl)
+
+            // Move back another 24 hours
+            priorDayTime = priorDayTime - (24 * 60 * 60)
+        }
     }
 
     func updateBGGraphSettings() {