Widgets/notifications: tracked-event auto-advance, lock-screen dots, Snooze labels, period milestones

- Bars widget: tracked ("Track Countdown") events now also advance — a completed
  or past (non-recurring) tracked event falls through to the next-nearest, and the
  refresh boundary covers the tracked event's expiry. Recurring tracked events
  still roll forward. Completes the KC-26 auto-advance for all paths.
- Progress Dots on the lock screen (accessoryRectangular): show 28 larger dots
  instead of 100 tiny ones, render with .primary for the vibrant tint, and use
  AccessoryWidgetBackground so it's legible (Home Screen keeps the 100-dot grid).
- Notifications: snooze action labels now read "Snooze 15 min/30 min/1 hour/
  2 hours" (lock screen) and "Snooze 15 Minutes…" (in-app Postpone menu).
- New period milestone notifications: recurring "One more week/month/year passed"
  at end of week (Sun 20:00), month (1st 09:00), and year (Jan 1 09:00); gated by
  a kisani.periodMilestones flag, scheduled via the existing reschedule path.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

KisaniCalWidgets/WidgetViews.swift

@@ -77,25 +77,33 @@ struct ProgressDotView: View {
         }
     }
 
+    private var isAccessory: Bool { family == .accessoryRectangular }
+
+    // 100 tiny dots are illegible in a lock-screen pill — show a coarse grid there.
+    private var dotCount: Int { isAccessory ? 28 : entry.totalDots }
+
     var body: some View {
         let percent = Int((entry.progress * 100).rounded(.down))
         VStack(alignment: .leading, spacing: spacing) {
             HStack(alignment: .firstTextBaseline) {
                 Text(entry.title)
                     .font(headerFont)
-                    .foregroundColor(.white)
+                    .foregroundColor(isAccessory ? .primary : .white)
                     .lineLimit(1)
                     .minimumScaleFactor(0.72)
                 Spacer()
                 Text("\(percent)%")
                     .font(headerFont)
-                    .foregroundColor(Color(white: 0.5))
+                    .foregroundColor(isAccessory ? .primary.opacity(0.7) : Color(white: 0.5))
                     .lineLimit(1)
             }
-            DotGridView(progress: entry.progress, totalDots: entry.totalDots, color: accent)
+            DotGridView(progress: entry.progress, totalDots: dotCount,
+                        color: isAccessory ? .primary : accent)
         }
         .padding(.horizontal, horizontalPadding)
-        .containerBackground(WidgetTheme.background, for: .widget)
+        .containerBackground(for: .widget) {
+            if isAccessory { AccessoryWidgetBackground() } else { WidgetTheme.background }
+        }
     }
 }