v1.0.11-rc1

frontend/src/views/ProjectsPage.tsx

@@ -1664,7 +1664,7 @@ export function ProjectsPage({ onNavigate, onStartTimer }: ProjectsPageProps) {
               const remaining = projectRemaining(project, viewSettings.standardTeamspaceOnly);
               const usedPercent = projectConsumptionPercent(project, viewSettings.standardTeamspaceOnly);
               const showBudgetedTeamspaceEntries = !viewSettings.standardTeamspaceOnly && budgetedTeamspaceEntries.length > 1;
-              const canEditProject = project.can_edit !== false;
+              const canEditProject = project.can_edit === true;
 
               return (
                 <div key={project.id} className="border-b last:border-b-0">
@@ -1797,7 +1797,7 @@ export function ProjectsPage({ onNavigate, onStartTimer }: ProjectsPageProps) {
                       variant="outline"
                       size="sm"
                       className="h-7 shrink-0 px-2 text-xs"
-                      disabled={savingProjectStatusId === project.id || project.can_edit === false}
+                      disabled={savingProjectStatusId === project.id || !canEditProject}
                       onClick={() => void acknowledgeProjectReviewCheck(project)}
                     >
                       <CheckCircle2 className="mr-1.5 h-3.5 w-3.5" />

frontend/src/views/TicketDetailPage.tsx

@@ -912,8 +912,17 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
   const projectBudgetMinutes = project?.hour_budget_minutes ?? null;
   const projectConsumptionUsagePercent = project ? projectConsumptionPercent(projectConsumptionMinutes, projectBudgetMinutes) : null;
   const projectRemainingMinutes = projectBudgetMinutes && projectBudgetMinutes > 0 ? projectBudgetMinutes - projectConsumptionMinutes : null;
-  const canEditProject = project?.can_edit !== false;
-  const canEditTicketData = !project || canEditProject;
+  const canEditProject = project?.can_edit === true;
+  const ticketManagedByZammad = Boolean(ticket?.zammad_ticket_id);
+  const canEditTicketData = ticket?.can_edit_ticket_data === true;
+  const zammadOwnerLabel = ticket?.zammad_owner_display_name
+    || ticket?.zammad_owner_username
+    || (ticket?.zammad_owner_id ? `Zammad-Owner ${ticket.zammad_owner_id}` : null);
+  const projectOwnerLabel = project?.owner_display_name
+    || project?.owner_username
+    || (project?.zammad_owner_id ? `Zammad-Owner ${project.zammad_owner_id}` : null)
+    || zammadOwnerLabel;
+  const currentZammadUserLabel = currentUser.zammad_user_id ? `Zammad-User ${currentUser.zammad_user_id}` : "dein Zammad-User";
   const isProject = Boolean(project);
   const isGlobalTicket = periodType === "all";
   const isPeriodClosed = Boolean(data?.closed);
@@ -1045,6 +1054,7 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
   const periodTeamspaceMinutes = (data?.dayBillings ?? []).reduce((sum, billing) => sum + Number(billing.billed_minutes ?? 0), 0);
   const ticketDataDirty = Boolean(
     ticket &&
+      canEditTicketData &&
       (editTicketNumber !== ticket.ticket_number ||
         editTicketTitle !== (ticket.title ?? "") ||
         editOrganizationId !== (ticket.organization_id ?? "") ||
@@ -1284,8 +1294,10 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
     }
 
     if (!canEditTicketData) {
-      toast.error("Projekt ist geteilt", {
-        description: "Nur der Zammad-Owner kann Ticket- und Projektdaten ändern."
+      toast.error(ticketManagedByZammad ? "Ticketdaten kommen aus Zammad" : "Ticket gehört einem anderen Owner", {
+        description: ticketManagedByZammad
+          ? "Nummer, Art, Titel und Organisation werden durch den Zammad-Sync verwaltet."
+          : "Nur der Owner kann Ticketdaten ändern."
       });
       return;
     }
@@ -1334,7 +1346,7 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
       return;
     }
 
-    if (project.can_edit === false) {
+    if (!canEditProject) {
       toast.error("Projekt ist geteilt", {
         description: "Nur der Zammad-Owner kann die Projektdaten bearbeiten."
       });
@@ -1352,7 +1364,7 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
       return;
     }
 
-    if (project.can_edit === false) {
+    if (!canEditProject) {
       toast.error("Projekt ist geteilt", {
         description: "Nur der Zammad-Owner kann die Projektdaten bearbeiten."
       });
@@ -1407,7 +1419,7 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
       return;
     }
 
-    if (project.can_edit === false) {
+    if (!canEditProject) {
       toast.error("Projekt ist geteilt", {
         description: "Nur der Zammad-Owner kann den Projektstatus ändern."
       });
@@ -1433,7 +1445,7 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
       return;
     }
 
-    if (project.can_edit === false) {
+    if (!canEditProject) {
       toast.error("Projekt ist geteilt", {
         description: "Nur der Zammad-Owner kann die Prüfung bestätigen."
       });
@@ -1811,6 +1823,26 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
         </Alert>
       ) : null}
 
+      {ticket?.is_foreign_zammad_owner ? (
+        <Alert className="py-3 text-sm">
+          <AlertCircle className="size-4" />
+          <AlertTitle>Anderer Zammad-Owner</AlertTitle>
+          <AlertDescription>
+            Dieses Ticket gehört in Zammad {zammadOwnerLabel ? `${zammadOwnerLabel}` : "einem anderen Owner"}; du bist {currentZammadUserLabel}. Du kannst deine Sessions sehen, Projekt- und Ticketdaten sind für dich geschützt.
+          </AlertDescription>
+        </Alert>
+      ) : null}
+
+      {ticketManagedByZammad ? (
+        <Alert className="py-3 text-sm">
+          <AlertCircle className="size-4" />
+          <AlertTitle>Ticketdaten werden von Zammad verwaltet</AlertTitle>
+          <AlertDescription>
+            Nummer, Art, Titel und Organisation wurden durch den Zammad-Sync übernommen und können in TicketTracker nicht manuell geändert werden.
+          </AlertDescription>
+        </Alert>
+      ) : null}
+
       <div className="grid gap-4">
         <Card>
           <CardHeader className="p-4 pb-2">
@@ -1820,7 +1852,9 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
                 <CardDescription>
                   {canEditTicketData
                     ? "Änderungen an Organisation und Art werden auf alle vorhandenen Sessions dieses Tickets übernommen."
-                    : "Dieses Projekt ist geteilt. Nur der Zammad-Owner kann Ticket- und Projektdaten ändern."}
+                    : ticketManagedByZammad
+                      ? "Nummer, Art, Titel und Organisation kommen aus Zammad und sind lokal gesperrt."
+                      : "Nur der Owner kann Ticketdaten ändern."}
                 </CardDescription>
               </div>
               <HelpLink anchor="ticketdaten" label="Hilfe zu Ticketdaten" />
@@ -1891,8 +1925,8 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
                   {(project.unassigned_teamspace_session_count ?? 0) > 0 ? <Badge variant="warning">{project.unassigned_teamspace_session_count} ohne TS</Badge> : null}
                 </CardTitle>
                 <CardDescription>
-                  {!canEditProject && project.owner_display_name
-                    ? `Eigentümer: ${project.owner_display_name}`
+                  {!canEditProject && projectOwnerLabel
+                    ? `Eigentümer: ${projectOwnerLabel}`
                     : showBudgetedProjectEntries
                       ? `${budgetedProjectEntries.length} budgetierte Teamspace-Einträge`
                       : budgetedProjectEntries[0] ? teamspaceEntryDisplayLabel(budgetedProjectEntries[0]) : project.teamspace_project || "Kein Teamspace-Projekt hinterlegt"}
@@ -1944,7 +1978,7 @@ export function TicketDetailPage({ periodType, period, ticketId, onNavigate, onS
                     variant="outline"
                     size="sm"
                     className="shrink-0"
-                    disabled={savingProjectStatus || project.can_edit === false}
+                    disabled={savingProjectStatus || !canEditProject}
                     onClick={() => void acknowledgeProjectReviewCheck()}
                   >
                     <CheckCircle2 className="mr-2 h-4 w-4" />

frontend/src/views/ZammadSyncPage.tsx

@@ -659,6 +659,25 @@ function addCachedChange(changes: ZammadSyncChange[], field: string, from: unkno
   }
 }
 
+const preservedExistingPreviewChangeFields = new Set([
+  "Fremdes Ticket",
+  "Fremder Zammad-Owner",
+  "Owner",
+  "Ticket-Zuordnung",
+  "Hinweis",
+  "Ticketnummer",
+  "TicketTracker-Zusammenführung"
+]);
+
+function preserveExistingPreviewChanges(item: ZammadSyncItem, changes: ZammadSyncChange[], fields: ZammadSyncExistingFields) {
+  const existingFields = new Set(changes.map((change) => change.field));
+
+  return [
+    ...item.changes.filter((change) => preservedExistingPreviewChangeFields.has(change.field) && !existingFields.has(change.field) && changeAllowedByFields(item, change, fields)),
+    ...changes
+  ];
+}
+
 function changesFromExistingPreviewCache(item: ZammadSyncItem, fields: ZammadSyncExistingFields) {
   if (!item.zammad) {
     return item.changes.filter((change) => changeAllowedByFields(item, change, fields));
@@ -756,7 +775,7 @@ function changesFromExistingPreviewCache(item: ZammadSyncItem, fields: ZammadSyn
     }
   }
 
-  return changes;
+  return preserveExistingPreviewChanges(item, changes, fields);
 }
 
 function rebuildZammadSyncResultFromItems(mode: ZammadSyncResult["mode"], items: ZammadSyncItem[], checked = items.length): ZammadSyncResult {