liveactivity+widgets: fix iOS 16.2 build error, extend createdAt to Bars widget (KC-66)

end(_:dismissalPolicy:) requires iOS 16.2 but LiveActivityManager.end
only gated to 16.1 (Live Activities' own minimum) - branch on
#available with the deprecated overload as fallback. Separately,
auditing all countdown widgets per user request found the "Event
Countdown (Bars)" widget family had its own independent start-date
resolution that never considered the task's real creation date at
all - EventEntity now carries createdAt and resolveSpan prefers it
the same way KC-65 already does for the dot-grid widget.

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

KisaniCal/ISSUES.md

@@ -2292,3 +2292,59 @@ parens (one pre-existing stray `(` predates this change, confirmed earlier
 in KC-62). Existing tasks (created before this fix) still have no real
 creation date and will keep using the anchor/inferred fallback — there's
 no way to retroactively know when they were actually created.
+
+## KC-66 — Live Activity build error + second countdown widget missing createdAt
+
+Status: Implemented (not build-verified — no iOS runtime here)
+Reported by: User, Xcode error screenshot + follow-up request to audit all
+widgets for creation-date usage
+Area: Live Activities, Widgets
+
+### 1. Build error: `end(_:dismissalPolicy:)` needs iOS 16.2, file targets 16.1
+KC-64's fix picked the non-deprecated ActivityKit overload, but
+`LiveActivityManager.end(taskID:)` is only gated `@available(iOS 16.1, *)`
+— matching Live Activities' own minimum — so the call didn't compile for
+16.1.x. Branched on `#available(iOS 16.2, *)`: the new overload when
+available, falling back to the deprecated `end(using:dismissalPolicy:)`
+below that. `StopCountdownIntent.swift` needed no change — it's already
+gated `@available(iOS 17.0, *)`, well above 16.2.
+
+Files: `KisaniCal/Managers/LiveActivityManager.swift`.
+
+### 2. Audit: does every countdown widget use the task's real creation date?
+KC-65 fixed `KisaniCalWidgets.swift`'s `ProgressDotProvider` (the "Track
+Countdown" dot-grid widget, driven by App Group task data) to prefer
+`task.createdAt`. Auditing the rest turned up a second, separate countdown
+widget — `EventCountdownWidget.swift`'s `EventBarsWidget`/`EventProvider`
+(the "Event Countdown (Bars)" widget family, config-driven via
+`EventConfigIntent`/`EventEntity`) — whose `resolveSpan` had its own
+independent start-date resolution that never looked at `createdAt` at all:
+explicit start (tracked-since date, or the widget's configured "Counting
+from") → `storedAnchor` (first-seen fallback) only. Confirmed via `grep
+createdAt EventCountdownWidget.swift` returning nothing before this fix.
+`WidgetViews.swift`'s progress-rendering views (`ProgressDotView`,
+`BarGrid`, etc.) only consume an already-computed `progress` value, so
+they needed no change — the two `TimelineProvider`s are the only places
+that resolve a start date, and both are now fixed.
+
+### Change
+- Added `createdAt: Date? = nil` to `EventEntity` (the App-Group-backed
+  event picker's entity type), populated in both places that build it:
+  `EventQuery.allEvents()` and `EventProvider.upcomingEvents(asOf:)`.
+- `resolveSpan(...)` gained a `taskCreatedAt: Date? = nil` parameter,
+  checked after `explicitStart` (an explicit user choice, e.g. the
+  widget's "Counting from" field, still wins) and before `storedAnchor`
+  (the last-resort fallback for tasks created before KC-65, or fully
+  custom events with no task behind them at all).
+- All three call sites that resolve a real task's span (tracked event,
+  upcoming-queue auto-select, manually configured event) now pass
+  `taskCreatedAt:`. The fully-custom-event branch (no task, just a typed
+  name + date) is unaffected — there's no task to have a creation date.
+
+Files: `KisaniCalWidgets/EventCountdownWidget.swift`.
+
+### Note
+Not build-verified (no iOS runtime here). Self-reviewed: balanced braces/
+parens confirmed per-file. Same caveat as KC-65: tasks created before that
+fix still have no real `createdAt` and fall through to the anchor/inferred
+heuristics in both widgets.

KisaniCal/Managers/LiveActivityManager.swift

@@ -61,7 +61,14 @@ enum LiveActivityManager {
         Task {
             for activity in Activity<TaskActivityAttributes>.activities
             where activity.attributes.taskID == taskID {
+                // end(_:dismissalPolicy:) needs iOS 16.2; this file supports
+                // 16.1 (Live Activities' own minimum), so fall back to the
+                // deprecated using:dismissalPolicy: overload below that.
+                if #available(iOS 16.2, *) {
                     await activity.end(nil, dismissalPolicy: .immediate)
+                } else {
+                    await activity.end(using: nil, dismissalPolicy: .immediate)
+                }
             }
         }
     }

KisaniCalWidgets/EventCountdownWidget.swift

@@ -78,6 +78,7 @@ struct EventEntity: AppEntity {
     let dueDate: Date?
     var isRecurring: Bool = false
     var recurrenceLabel: String? = nil
+    var createdAt: Date? = nil
 
     static var typeDisplayRepresentation: TypeDisplayRepresentation = "Event"
     static var defaultQuery = EventQuery()
@@ -105,7 +106,8 @@ struct EventQuery: EntityQuery {
             .filter { !$0.isComplete && $0.dueDate != nil }
             .sorted { ($0.dueDate ?? .distantFuture) < ($1.dueDate ?? .distantFuture) }
             .map { EventEntity(id: $0.id.uuidString, title: $0.title, dueDate: $0.dueDate,
-                               isRecurring: $0.isRecurring, recurrenceLabel: $0.recurrenceLabel) }
+                               isRecurring: $0.isRecurring, recurrenceLabel: $0.recurrenceLabel,
+                               createdAt: $0.createdAt) }
     }
 }
 
@@ -235,7 +237,8 @@ struct EventProvider: AppIntentTimelineProvider {
             .filter { !$0.isComplete && ($0.dueDate ?? .distantPast) > now }
             .sorted { ($0.dueDate ?? .distantFuture) < ($1.dueDate ?? .distantFuture) }
             .map { EventEntity(id: $0.id.uuidString, title: $0.title, dueDate: $0.dueDate,
-                               isRecurring: $0.isRecurring, recurrenceLabel: $0.recurrenceLabel) }
+                               isRecurring: $0.isRecurring, recurrenceLabel: $0.recurrenceLabel,
+                               createdAt: $0.createdAt) }
     }
 
     /// The tracked task ("Track Countdown"), but only while it's still live: not
@@ -267,13 +270,16 @@ struct EventProvider: AppIntentTimelineProvider {
     /// Resolve the progress window (start → target) for any event. Recurring events
     /// (Mode B) span the current occurrence period: previous → next occurrence —
     /// so a birthday 5 days away reads ~98% full. One-off events (Mode A) count
-    /// from an explicit start, the tracking date, or first-seen, up to the due date.
+    /// from an explicit start, the task's real creation date, the tracking date,
+    /// or first-seen, up to the due date — in that priority order.
     private func resolveSpan(due: Date, isRecurring: Bool, label: String?,
-                             anchorKey: String, explicitStart: Date?) -> (start: Date, target: Date) {
+                             anchorKey: String, explicitStart: Date?,
+                             taskCreatedAt: Date? = nil) -> (start: Date, target: Date) {
         if isRecurring, let label, let span = Self.recurrenceSpan(label: label, due: due) {
             return (span.prev, span.next)
         }
         if let s = explicitStart, s < due { return (s, due) }
+        if let created = taskCreatedAt, created < due { return (created, due) }
         return (Self.storedAnchor(key: anchorKey, target: due), due)
     }
 
@@ -288,7 +294,8 @@ struct EventProvider: AppIntentTimelineProvider {
             let trackedId = task.id.uuidString
             let since = UserDefaults.kisani.object(forKey: "kisani.widget.trackedSince") as? Date
             let s = resolveSpan(due: task.dueDate ?? now, isRecurring: task.isRecurring,
-                                label: task.recurrenceLabel, anchorKey: trackedId, explicitStart: since)
+                                label: task.recurrenceLabel, anchorKey: trackedId, explicitStart: since,
+                                taskCreatedAt: task.createdAt)
             return EventEntry(date: now, eventName: task.title, start: s.start, target: s.target, unitMode: mode)
         }
 
@@ -302,12 +309,13 @@ struct EventProvider: AppIntentTimelineProvider {
             }
             let ev = upcoming[idx]
             let s = resolveSpan(due: due, isRecurring: ev.isRecurring, label: ev.recurrenceLabel,
-                                anchorKey: ev.id, explicitStart: nil)
+                                anchorKey: ev.id, explicitStart: nil, taskCreatedAt: ev.createdAt)
             return EventEntry(date: now, eventName: ev.title, start: s.start, target: s.target, unitMode: mode)
         }
         if let ev = config.event, let due = ev.dueDate {
             let s = resolveSpan(due: due, isRecurring: ev.isRecurring, label: ev.recurrenceLabel,
-                                anchorKey: ev.id, explicitStart: config.startDate)
+                                anchorKey: ev.id, explicitStart: config.startDate,
+                                taskCreatedAt: ev.createdAt)
             return EventEntry(date: now, eventName: ev.title, start: s.start, target: s.target, unitMode: mode)
         }
         // Fully custom event (no task behind it).