Add Today dashboard foundation with permission-aware KPI summary API.

Replace hardcoded Today cards with a backend summary endpoint and composable frontend widgets filtered by org type and tab permissions.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/messages/en.json

@@ -194,10 +194,20 @@
     "noSubscriptionNotice": "This organization does not have an active subscription yet.",
     "choosePlanLink": "Choose a plan",
     "noSubscriptionCta": "to start the purchase process.",
-    "cardTodaysAppointments": "Today's Appointments",
-    "cardActivePatients": "Active Patients",
-    "cardNewLabCase": "New Lab Case",
-    "cardTodayInvoices": "Today invoices"
+    "noWidgets": "No dashboard metrics are available for your current permissions.",
+    "loadError": "Could not load dashboard metrics.",
+    "seatsUnlimited": "Unlimited plan",
+    "widgetAppointmentsToday": "Today's Appointments",
+    "widgetPatientsToday": "Patients Today",
+    "widgetTreatmentsToday": "Treatments Today",
+    "widgetDraftTreatments": "Draft Treatments",
+    "widgetLabCasesPendingSend": "Lab Cases Pending Send",
+    "widgetCasesReceivedToday": "Cases Received Today",
+    "widgetTasksInProgress": "Tasks In Progress",
+    "widgetImportantTasks": "Important Tasks",
+    "widgetPendingConnections": "Pending Connections",
+    "widgetSeats": "Seat Usage",
+    "widgetPendingStaffInvites": "Pending Staff Invites"
   },
   "staff": {
     "redirecting": "Redirecting…",

frontend/messages/fa.json

@@ -194,10 +194,20 @@
     "noSubscriptionNotice": "این سازمان هنوز اشتراک فعالی ندارد.",
     "choosePlanLink": "انتخاب طرح",
     "noSubscriptionCta": "برای شروع فرآیند خرید.",
-    "cardTodaysAppointments": "نوبت‌های امروز",
-    "cardActivePatients": "بیماران فعال",
-    "cardNewLabCase": "پرونده جدید لابراتوار",
-    "cardTodayInvoices": "صورتحساب‌های امروز"
+    "noWidgets": "هیچ معیاری برای دسترسی فعلی شما در دسترس نیست.",
+    "loadError": "بارگذاری معیارهای داشبورد ناموفق بود.",
+    "seatsUnlimited": "طرح نامحدود",
+    "widgetAppointmentsToday": "نوبت‌های امروز",
+    "widgetPatientsToday": "بیماران امروز",
+    "widgetTreatmentsToday": "درمان‌های امروز",
+    "widgetDraftTreatments": "درمان‌های پیش‌نویس",
+    "widgetLabCasesPendingSend": "پرونده‌های در انتظار ارسال",
+    "widgetCasesReceivedToday": "پرونده‌های دریافتی امروز",
+    "widgetTasksInProgress": "وظایف در حال انجام",
+    "widgetImportantTasks": "وظایف مهم",
+    "widgetPendingConnections": "درخواست‌های اتصال در انتظار",
+    "widgetSeats": "استفاده از صندلی",
+    "widgetPendingStaffInvites": "دعوت‌های کارکنان در انتظار"
   },
   "staff": {
     "redirecting": "در حال انتقال...",

frontend/messages/nl.json

@@ -194,10 +194,20 @@
     "noSubscriptionNotice": "Deze organisatie heeft nog geen actief abonnement.",
     "choosePlanLink": "Kies een abonnement",
     "noSubscriptionCta": "om het aankoopproces te starten.",
-    "cardTodaysAppointments": "Afspraken van vandaag",
-    "cardActivePatients": "Actieve patiënten",
-    "cardNewLabCase": "Nieuwe laboratoriumcase",
-    "cardTodayInvoices": "Facturen van vandaag"
+    "noWidgets": "Geen dashboardstatistieken beschikbaar voor uw huidige rechten.",
+    "loadError": "Dashboardstatistieken konden niet worden geladen.",
+    "seatsUnlimited": "Onbeperkt abonnement",
+    "widgetAppointmentsToday": "Afspraken van vandaag",
+    "widgetPatientsToday": "Patiënten vandaag",
+    "widgetTreatmentsToday": "Behandelingen vandaag",
+    "widgetDraftTreatments": "Conceptbehandelingen",
+    "widgetLabCasesPendingSend": "Labcases wachten op verzending",
+    "widgetCasesReceivedToday": "Cases ontvangen vandaag",
+    "widgetTasksInProgress": "Taken in uitvoering",
+    "widgetImportantTasks": "Belangrijke taken",
+    "widgetPendingConnections": "Openstaande koppelingsverzoeken",
+    "widgetSeats": "Zitplaatsgebruik",
+    "widgetPendingStaffInvites": "Openstaande medewerkersuitnodigingen"
   },
   "staff": {
     "redirecting": "Bezig met doorsturen...",