feat: job status/step flow, file upload, finance sync, notifications

Job lifecycle
  - acceptJobAction (lab): pending → in_progress + currentStep=olcu
  - advanceStepAction (lab): step ilerletir, son adım sonrası status=sent
  - markDeliveredAction (clinic): sent → delivered
  - cancelJobAction: pending iş iptali (her iki taraf)
  - job_status_history her step transition'da idempotent kayıt
  - Detay sayfası interactive panel + Aşama Geçmişi kartı

Job files (Appwrite Storage job-files bucket, 30MB/file)
  - uploadJobFilesAction: çoklu dosya, mimeType'tan kind sınıflandırma
    (scan/image/document), her iki team'e read permission, partial-fail
    rollback (storage + row temizliği)
  - deleteJobFileAction: yetkilendirilmiş silme, file + row birlikte
  - JobFilesPanel: client-side select + upload + liste + indir + sil
  - next.config bodySizeLimit 3mb → 100mb (toplu yükleme için)

Finance sync (idempotent)
  - syncFinanceForJob helper: sent/delivered transition'larında klinik
    payable + lab receivable rows (jobId+tenantId+type unique kontrolü,
    her tarafta tek satır garanti)
  - markFinancePaidAction / reopenFinanceAction: manuel ödendi/geri al
  - /finance sayfası: stat kartlar (bekleyen alacak/borç, aylık gelir/gider)
    + hareketler tablosu, role-aware kopyalar
  - Memory rule [[feedback_cross_entity_sync_helpers]]: best-effort, never
    re-throws

Notifications
  - createNotification helper, connection (request/approve) ve job
    (create/accept/sent/delivered) eventlerinde tetikleniyor
  - /notifications sayfası + tek tek / hepsi okundu işaretle
  - Header'a Bell ikonu + okunmamış count badge (layout SSR'de besler)
  - Middleware PROTECTED_PREFIXES'e /notifications ekli

src/app/(dashboard)/layout.tsx

@@ -1,6 +1,7 @@
 import { redirect } from "next/navigation";
 
 import { getActiveContext } from "@/lib/appwrite/active-context";
+import { countUnreadNotifications } from "@/lib/appwrite/notification-helpers";
 import { getLogoUrl } from "@/lib/appwrite/storage";
 import { getUserPrefs } from "@/lib/appwrite/user-prefs-actions";
 import type { UserPrefs as ThemePrefs } from "@/lib/appwrite/user-prefs-actions";
@@ -14,7 +15,10 @@ export default async function DashboardLayout({
   const ctx = await getActiveContext();
   if (!ctx) redirect("/onboarding");
 
-  const themePrefs: ThemePrefs = await getUserPrefs();
+  const [themePrefs, unreadCount] = (await Promise.all([
+    getUserPrefs(),
+    countUnreadNotifications(ctx.tenantId),
+  ])) as [ThemePrefs, number];
 
   const company = {
     id: ctx.tenantId,
@@ -29,7 +33,12 @@ export default async function DashboardLayout({
   };
 
   return (
-    <DashboardShell user={user} company={company} initialPrefs={themePrefs}>
+    <DashboardShell
+      user={user}
+      company={company}
+      initialPrefs={themePrefs}
+      unreadCount={unreadCount}
+    >
       {children}
     </DashboardShell>
   );