fix: KPI card counts match feed — exclusive buckets + filter reset on click

- reminderService: dueThisWeek/dueThisMonth use exclusive day ranges (1-7,
  8-30) matching getHorizon() buckets; schattenmarktReadyCount counts by
  type=SCHATTENMARKT_RELEASE (same criteria as the feed filter)
- ReminderKpiBar: clicking a horizon card resets filterType to ALL;
  clicking Pre-Market card resets filterHorizon to ALL — ensures the number
  shown on the card always equals the number of rows displayed below

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/services/reminderService.ts

@@ -1,6 +1,6 @@
 import { MockupReminderProvider } from '../provider/MockupReminderProvider'
 import type { Reminder } from '../domain/reminder'
-import { ReminderPriority, ReminderStatus, ShadowMarketRisk } from '../domain/reminder'
+import { ReminderPriority, ReminderStatus, ReminderType } from '../domain/reminder'
 
 const provider = MockupReminderProvider
 
@@ -27,25 +27,19 @@ export const reminderService = {
 
     const urgentCount = active.filter(r => r.priority === ReminderPriority.URGENT).length
 
-    const endOfWeek = new Date(MOCK_TODAY)
-    endOfWeek.setDate(endOfWeek.getDate() + 7)
+    // Counts match getHorizon() in ReminderFeed — exclusive, non-overlapping buckets
     const dueThisWeek = active.filter(r => {
       const d = daysDiff(r.dueDate)
-      return d >= 0 && d <= 7
+      return d >= 1 && d <= 7
     }).length
 
-    const endOfMonth = new Date(MOCK_TODAY)
-    endOfMonth.setDate(endOfMonth.getDate() + 30)
     const dueThisMonth = active.filter(r => {
       const d = daysDiff(r.dueDate)
-      return d >= 0 && d <= 30
+      return d >= 8 && d <= 30
     }).length
 
-    const schattenmarktReadyCount = reminders.filter(
-      r =>
-        r.status === ReminderStatus.ACTIVE &&
-        !r.schattenmarktEnabled &&
-        (r.shadowMarketRisk === ShadowMarketRisk.HIGH),
+    const schattenmarktReadyCount = active.filter(
+      r => r.type === ReminderType.SCHATTENMARKT_RELEASE,
     ).length
 
     const overdueCount = active.filter(r => daysDiff(r.dueDate) <= 0).length