feat: platform backbone and field capture complete (checkpoint)

Platform backbone (plan 2026-10-13-plattform-rueckgrat), all tasks reviewed:
- webhooks with delivery table, retries and stable delivery id
- calendar handlers; a finished task removes its Outlook event
- tasks, automations, inspections, varroa, treatments, feedings,
  harvests, colonies, wintering, stock and bottling record domain events
  in the same transaction; legacy post-commit calls removed
- row locks through one helper (lockRowForUpdate, lockRowsForShare,
  lockRowsForUpdate)
- job framework with JobRun, cli exit codes, cleanup, task templates,
  daily evaluation, hourly app-backup and the rekey job
- system API and page "Verwaltung > System" with retry
- @nestjs/schedule removed, guard tests against in-process schedulers

Field capture T3 (plan 2026-10-13-t3-erfassung-am-stand), all tasks reviewed:
- inspection photo offline without metadata
- bulk capture for treatments, feedings and varroa (backend + frontend)
- offline stand mode with service worker, offline pages and packs
- offline session, cold start and logout on shared devices

Docs: ARCHITECTURE.md assumptions and sections updated, TASKS.md.
Gates: backend lint, typecheck, 1770 unit, 420 e2e, build, no schema
drift; frontend lint, typecheck, 913 tests, build. Not rolled out.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Frontend/src/app/(app)/layout.tsx

@@ -1,11 +1,12 @@
 "use client";
 
-import { ReactNode, useEffect, useRef } from "react";
+import { ReactNode, useEffect, useRef, useState } from "react";
 import Link from "next/link";
 import { useRouter } from "next/navigation";
 import { Hexagon } from "lucide-react";
 import { useAuth } from "@/lib/auth/auth-context";
-import { purgeStaleDraftPhotos } from "@/lib/photos/store";
+import { finishHandOvers, purgeStaleDraftPhotos } from "@/lib/photos/store";
+import { LogoutConfirmDialog } from "@/components/auth/logout-confirm-dialog";
 import { NotificationBell } from "@/components/notification-bell";
 import { OfflineBand } from "@/components/offline/offline-band";
 import { UserAvatar } from "@/components/user-avatar";
@@ -25,7 +26,8 @@ import { PageTransition } from "./page-transition";
 
 export default function AppLayout({ children }: { children: ReactNode }) {
   const router = useRouter();
-  const { user, isLoading, logout } = useAuth();
+  const { user, isLoading, sessionMode } = useAuth();
+  const [isLogoutOpen, setIsLogoutOpen] = useState(false);
   // Focus lands here when the offline queue sheet closes and nothing else is left.
   const pageContentRef = useRef<HTMLDivElement>(null);
 
@@ -41,6 +43,16 @@ export default function AppLayout({ children }: { children: ReactNode }) {
     void purgeStaleDraftPhotos(Date.now()).catch(() => undefined);
   }, []);
 
+  // Online saves whose photos could not be tied to their inspection at once:
+  // finished for the signed-in user, even offline - the photos then wait as
+  // entries of their own. Every sync run of that user tries again too.
+  const userId = user?.id;
+  useEffect(() => {
+    if (userId) {
+      void finishHandOvers(userId).catch(() => undefined);
+    }
+  }, [userId]);
+
   if (isLoading || !user) {
     return null;
   }
@@ -69,7 +81,7 @@ export default function AppLayout({ children }: { children: ReactNode }) {
             <QuickAddSheet user={user} variant="header" />
             <NotificationBell />
             <DropdownMenu>
-              <DropdownMenuTrigger className="rounded-full">
+              <DropdownMenuTrigger className="rounded-full" aria-label="Konto-Menü">
                 <UserAvatar name={user.name} hasAvatar={user.hasAvatar} size="sm" />
               </DropdownMenuTrigger>
               <DropdownMenuContent align="end">
@@ -84,9 +96,7 @@ export default function AppLayout({ children }: { children: ReactNode }) {
                 </DropdownMenuItem>
                 <DropdownMenuItem
                   variant="destructive"
-                  onClick={() => {
-                    void logout().then(() => router.push("/login"));
-                  }}
+                  onClick={() => setIsLogoutOpen(true)}
                 >
                   Abmelden
                 </DropdownMenuItem>
@@ -94,7 +104,11 @@ export default function AppLayout({ children }: { children: ReactNode }) {
             </DropdownMenu>
           </div>
         </header>
-        <OfflineBand userId={user.id} pageContentRef={pageContentRef} />
+        <OfflineBand
+          userId={user.id}
+          pageContentRef={pageContentRef}
+          syncEnabled={sessionMode === "online"}
+        />
         <div
           ref={pageContentRef}
           tabIndex={-1}
@@ -105,6 +119,12 @@ export default function AppLayout({ children }: { children: ReactNode }) {
       </div>
       <BottomNav user={user} />
       <QuickAddSheet user={user} variant="fab" />
+      <LogoutConfirmDialog
+        open={isLogoutOpen}
+        onOpenChange={setIsLogoutOpen}
+        userId={user.id}
+        onLoggedOut={() => router.push("/login")}
+      />
     </div>
   );
 }