fix(11-05): CR-02 all-day-aware push body (no "Starts in 0 min")

- humanizeLeadMinutes: add isAllDay=false param; all-day branch returns
  "Today" (lead=0), "Tomorrow" (1440), "In 1 week" (10080), "In N days" (other)
- byKey map: store isAllDay flag (false for timed, true for all-day)
- dispatch loop: pass event.isAllDay to humanizeLeadMinutes

All-day same-day reminder push now reads "Today" instead of "Starts in 0 min".
Timed event wording unchanged (isAllDay defaults to false).

apps/api/src/broker/reminderScheduler.ts

@@ -79,11 +79,23 @@ function yyyyMmDd(d: Date): string {
 /**
  * Humanize a lead time in minutes to a human-readable string.
  *
+ * CR-02 (Phase 11 Plan 05): added isAllDay parameter. All-day events use day-granularity
+ * wording ("Today", "Tomorrow", "In N days/1 week") because the lead is day-based
+ * and "Starts in 0 min" for a same-day all-day event (lead=0) is factually wrong.
+ * Timed events keep the existing "Starts in N min/hours/days" wording (default isAllDay=false).
+ *
  * D-09: "Starts in 30 min" / "Starts in 1 hour" / "Starts in 1 day" etc.
  * Branch order is important — check < 120 before the hours calculation to
  * prevent Math.round(90/60)=2 erroneously giving "2 hours" for a 90-min lead.
  */
-export function humanizeLeadMinutes(leadMinutes: number): string {
+export function humanizeLeadMinutes(leadMinutes: number, isAllDay = false): string {
+  if (isAllDay) {
+    // Day-granularity wording for all-day event reminders
+    if (leadMinutes === 0) return 'Today';
+    if (leadMinutes <= 1440) return 'Tomorrow';
+    if (leadMinutes === 10080) return 'In 1 week';
+    return `In ${Math.round(leadMinutes / 1440)} days`;
+  }
   if (leadMinutes < 60) return `Starts in ${leadMinutes} min`;
   if (leadMinutes < 120) return 'Starts in 1 hour';
   if (leadMinutes < 1440) return `Starts in ${Math.round(leadMinutes / 60)} hours`;
@@ -186,6 +198,7 @@ export async function runReminderCheck(now = new Date()): Promise<void> {
       dtstartMs: number; // key component — used for compound dedup key
       pruneMs: number; // when to prune: dtstartUtc for timed; end-of-event-date for all-day
       reminderLeadMinutes: number;
+      isAllDay: boolean; // CR-02 (Plan 05): needed for allDay-aware humanizeLeadMinutes
       dateStr: string;
       subs: SubRow[];
     }
@@ -214,6 +227,7 @@ export async function runReminderCheck(now = new Date()): Promise<void> {
         dtstartMs,
         pruneMs: dtstartMs, // timed: prune when event has started (dtstartUtc <= now)
         reminderLeadMinutes: lead,
+        isAllDay: false, // CR-02: timed events use the existing "Starts in N..." wording
         dateStr: yyyyMmDd(dtstartUtc),
         subs: [],
       });
@@ -262,6 +276,7 @@ export async function runReminderCheck(now = new Date()): Promise<void> {
         dtstartMs,
         pruneMs,
         reminderLeadMinutes: lead,
+        isAllDay: true, // CR-02: all-day events use day-granularity wording
         dateStr: dtstartDate,
         subs: [],
       });
@@ -289,7 +304,8 @@ export async function runReminderCheck(now = new Date()): Promise<void> {
         // Null-safe title fallback (D-02 / NOTIF-01): use uid if title is NULL.
         title: event.title ?? event.uid,
         // D-09: humanized body driven by the configured lead (DB ground truth), not live delta.
-        body: humanizeLeadMinutes(event.reminderLeadMinutes),
+        // CR-02 (Plan 05): pass isAllDay so all-day events get day-granularity wording.
+        body: humanizeLeadMinutes(event.reminderLeadMinutes, event.isAllDay),
         tag: `reminder-${event.uid}`,
         navigate: `/calendar?date=${event.dateStr}&event=${event.uid}`,
       };