fix(data-transfer): handle missing owner role policy and align web sync behavior

* Feat: Add PostgreSQL transfer ownership preview and resolution

- Add ownership policy support for data transfers: preserve, skip, and reassign missing owners
- Preview missing PostgreSQL roles before creating target schema objects
- Show ownership confirmation dialog when target roles are missing
- Allow users to skip ownership changes or reassign missing owners to the target connection user
- Add Tauri and HTTP API support for ownership preview
- Apply ownership statements according to selected policy during PostgreSQL transfers
- Add Chinese localization for ownership confirmation UI

* Feat: Add ownership confirmation localization

- Add ownership confirmation messages for supported desktop locales
- Include skip and confirm labels for ownership handling
- Update transfer test requests to use Preserve ownership policy

apps/desktop/src/components/transfer/DataTransferDialog.vue

@@ -55,6 +55,11 @@ const transferMode = ref<TransferMode>("append");
 const targetTableNameCase = ref<TransferTableNameCase>("preserve");
 const batchSize = ref(1000);
 const isSubmitting = ref(false);
+const ownershipDialogOpen = ref(false);
+const ownershipMissingOwners = ref<string[]>([]);
+const ownershipTargetOwner = ref("");
+const pendingOwnershipRequest = ref<api.TransferRequest | null>(null);
+const pendingOwnershipRefresh = ref<{ targetConnection: string; targetDatabase: string; targetSchema: string; shouldRefreshTargetTree: boolean } | null>(null);
 
 const filteredTables = computed(() => {
   const q = tableSearch.value.toLowerCase();
@@ -247,6 +252,11 @@ function resetState() {
   targetTableNameCase.value = "preserve";
   batchSize.value = 1000;
   isSubmitting.value = false;
+  ownershipDialogOpen.value = false;
+  ownershipMissingOwners.value = [];
+  ownershipTargetOwner.value = "";
+  pendingOwnershipRequest.value = null;
+  pendingOwnershipRefresh.value = null;
 }
 
 async function startTransfer() {
@@ -272,10 +282,39 @@ async function startTransfer() {
     createTable: createTable.value,
     mode: transferMode.value,
     targetTableNameCase: targetTableNameCase.value,
+    ownershipPolicy: "preserve",
     batchSize: batchSize.value,
   };
 
-  startDataTransferTask(request, `${sourceDatabaseName} → ${targetDatabaseName}`, {
+  if (createTable.value) {
+    try {
+      const preview = await api.previewTransferOwnership(request);
+      if (preview.missingOwners.length > 0) {
+        ownershipMissingOwners.value = preview.missingOwners;
+        ownershipTargetOwner.value = preview.targetOwner;
+        pendingOwnershipRequest.value = request;
+        pendingOwnershipRefresh.value = {
+          targetConnection,
+          targetDatabase: targetDatabaseName,
+          targetSchema: effectiveTargetSchema,
+          shouldRefreshTargetTree,
+        };
+        ownershipDialogOpen.value = true;
+        isSubmitting.value = false;
+        return;
+      }
+    } catch {
+      isSubmitting.value = false;
+      return;
+    }
+  }
+
+  runTransfer(request, targetConnection, targetDatabaseName, effectiveTargetSchema, shouldRefreshTargetTree);
+}
+
+function runTransfer(request: api.TransferRequest, targetConnection: string, targetDatabaseName: string, effectiveTargetSchema: string, shouldRefreshTargetTree: boolean) {
+  isSubmitting.value = true;
+  startDataTransferTask(request, `${request.sourceDatabase} → ${targetDatabaseName}`, {
     formatOverlapError: (tables) => t("transfer.targetTableBusy", { tables: tables.join(", ") }),
     onDone: async () => {
       if (shouldRefreshTargetTree) {
@@ -287,6 +326,21 @@ async function startTransfer() {
   resetState();
 }
 
+function resolveOwnershipDecision(policy: api.TransferOwnershipPolicy | null) {
+  const request = pendingOwnershipRequest.value;
+  const refresh = pendingOwnershipRefresh.value;
+  pendingOwnershipRequest.value = null;
+  pendingOwnershipRefresh.value = null;
+  ownershipDialogOpen.value = false;
+  ownershipMissingOwners.value = [];
+  ownershipTargetOwner.value = "";
+  if (!policy || !request || !refresh) {
+    isSubmitting.value = false;
+    return;
+  }
+  runTransfer({ ...request, ownershipPolicy: policy }, refresh.targetConnection, refresh.targetDatabase, refresh.targetSchema, refresh.shouldRefreshTargetTree);
+}
+
 function getConnectionName(id: string) {
   return store.connections.find((c) => c.id === id)?.name ?? id;
 }
@@ -514,4 +568,34 @@ function getConnectionName(id: string) {
       </DialogFooter>
     </DialogContent>
   </Dialog>
+
+  <Dialog v-model:open="ownershipDialogOpen">
+    <DialogContent class="sm:max-w-[520px]" @interact-outside.prevent>
+      <DialogHeader>
+        <DialogTitle>{{ t("transfer.ownershipTitle") }}</DialogTitle>
+      </DialogHeader>
+      <div class="space-y-3 text-sm">
+        <p class="text-muted-foreground">
+          {{ t("transfer.ownershipMessage", { owners: ownershipMissingOwners.join(", ") }) }}
+        </p>
+        <div class="rounded-md border bg-muted/30 px-3 py-2 text-xs text-muted-foreground">
+          {{ t("transfer.ownershipSkipDetails") }}
+        </div>
+        <div class="rounded-md border bg-muted/30 px-3 py-2 text-xs text-muted-foreground">
+          {{ t("transfer.ownershipTargetOwner", { owner: ownershipTargetOwner }) }}
+        </div>
+      </div>
+      <DialogFooter class="gap-2">
+        <Button variant="outline" size="sm" @click="resolveOwnershipDecision(null)">
+          {{ t("transfer.cancel") }}
+        </Button>
+        <Button variant="secondary" size="sm" @click="resolveOwnershipDecision('skip')">
+          {{ t("transfer.ownershipSkip") }}
+        </Button>
+        <Button size="sm" @click="resolveOwnershipDecision('reassignMissing')">
+          {{ t("transfer.ownershipConfirm") }}
+        </Button>
+      </DialogFooter>
+    </DialogContent>
+  </Dialog>
 </template>

apps/desktop/src/i18n/locales/en.ts

@@ -2242,6 +2242,12 @@ export default {
     editConfig: "Edit config",
     retry: "Retry",
     targetTableBusy: "Another transfer is already writing target table(s): {tables}",
+    ownershipTitle: "Confirm ownership",
+    ownershipMessage: "The target database is missing these owner users or roles: {owners}. Applying the original ownership may fail.",
+    ownershipSkipDetails: "Skip will not run object ownership change statements. Table data and other structure synchronization will continue.",
+    ownershipTargetOwner: "Confirm will reassign objects with missing owners to the target connection user: {owner}.",
+    ownershipSkip: "Skip",
+    ownershipConfirm: "Confirm",
     selectConnection: "Select connection",
     selectDatabase: "Select database",
     selectSchema: "Select schema",

apps/desktop/src/i18n/locales/es.ts

@@ -2174,6 +2174,12 @@ export default withEnglishFallback({
     editConfig: "Editar config",
     retry: "Reintentar",
     targetTableBusy: "Otra transferencia ya está escribiendo en la(s) tabla(s) de destino: {tables}",
+    ownershipTitle: "Confirmar propietario",
+    ownershipMessage: "La base de datos de destino no tiene estos usuarios o roles propietarios: {owners}. Aplicar el propietario original puede fallar.",
+    ownershipSkipDetails: "Omitir no ejecutará las sentencias de cambio de propietario de objetos. Los datos de tablas y otras estructuras seguirán sincronizándose.",
+    ownershipTargetOwner: "Confirmar reasignará los objetos con propietarios ausentes al usuario de conexión de destino: {owner}.",
+    ownershipSkip: "Omitir",
+    ownershipConfirm: "Confirmar",
     selectConnection: "Seleccionar conexión",
     selectDatabase: "Seleccionar base de datos",
     selectSchema: "Seleccionar esquema",

apps/desktop/src/i18n/locales/it.ts

@@ -2172,6 +2172,12 @@ export default withEnglishFallback({
     editConfig: "Modifica config",
     retry: "Riprova",
     targetTableBusy: "Un altro trasferimento sta gia scrivendo le tabelle di destinazione: {tables}",
+    ownershipTitle: "Conferma proprietario",
+    ownershipMessage: "Nel database di destinazione mancano questi utenti o ruoli proprietari: {owners}. Applicare il proprietario originale potrebbe non riuscire.",
+    ownershipSkipDetails: "Salta non eseguirà le istruzioni di modifica del proprietario degli oggetti. I dati delle tabelle e le altre strutture continueranno a essere sincronizzati.",
+    ownershipTargetOwner: "Conferma riassegnerà gli oggetti con proprietari mancanti all'utente della connessione di destinazione: {owner}.",
+    ownershipSkip: "Salta",
+    ownershipConfirm: "Conferma",
     selectConnection: "Seleziona connessione",
     selectDatabase: "Seleziona database",
     selectSchema: "Seleziona schema",

apps/desktop/src/i18n/locales/ja.ts

@@ -2172,6 +2172,12 @@ export default withEnglishFallback({
     editConfig: "設定を編集",
     retry: "リトライ",
     targetTableBusy: "別の転送がすでにターゲットテーブルに書き込み中です: {tables}",
+    ownershipTitle: "所有者の確認",
+    ownershipMessage: "対象データベースに次の所有者ユーザーまたはロールがありません: {owners}。元の所有者を適用すると失敗する可能性があります。",
+    ownershipSkipDetails: "スキップすると、オブジェクト所有者の変更ステートメントは実行されません。テーブルデータとその他の構造の同期は続行されます。",
+    ownershipTargetOwner: "確認すると、所有者が存在しないオブジェクトは対象接続ユーザーに再割り当てされます: {owner}。",
+    ownershipSkip: "スキップ",
+    ownershipConfirm: "確認",
     selectConnection: "接続を選択",
     selectDatabase: "データベースを選択",
     selectSchema: "スキーマを選択",

apps/desktop/src/i18n/locales/pt-BR.ts

@@ -2173,6 +2173,12 @@ export default withEnglishFallback({
     editConfig: "Editar configuração",
     retry: "Tentar novamente",
     targetTableBusy: "Outra transferência já está gravando na(s) tabela(s) de destino: {tables}",
+    ownershipTitle: "Confirmar proprietário",
+    ownershipMessage: "O banco de dados de destino não tem estes usuários ou roles proprietários: {owners}. Aplicar o proprietário original pode falhar.",
+    ownershipSkipDetails: "Pular não executará as instruções de alteração de proprietário dos objetos. Os dados das tabelas e outras estruturas continuarão sendo sincronizados.",
+    ownershipTargetOwner: "Confirmar reatribuirá os objetos com proprietários ausentes ao usuário da conexão de destino: {owner}.",
+    ownershipSkip: "Pular",
+    ownershipConfirm: "Confirmar",
     selectConnection: "Selecionar conexão",
     selectDatabase: "Selecionar banco de dados",
     selectSchema: "Selecionar schema",

apps/desktop/src/i18n/locales/zh-CN.ts

@@ -2242,6 +2242,12 @@ export default withEnglishFallback({
     editConfig: "编辑配置",
     retry: "重新传输",
     targetTableBusy: "已有传输任务正在写入目标表：{tables}",
+    ownershipTitle: "归属用户确认",
+    ownershipMessage: "目标端缺少以下归属用户或角色：{owners}。按原归属用户应用可能失败。",
+    ownershipSkipDetails: "选择跳过后，将不执行对象归属变更语句，表数据和其它结构同步会继续执行。",
+    ownershipTargetOwner: "选择确认后，缺失归属用户对应的对象会重归属至目标连接用户：{owner}。",
+    ownershipSkip: "跳过",
+    ownershipConfirm: "确认",
     selectConnection: "选择连接",
     selectDatabase: "选择数据库",
     selectSchema: "选择模式",

apps/desktop/src/i18n/locales/zh-TW.ts

@@ -2075,6 +2075,12 @@ export default withEnglishFallback({
     editConfig: "編輯配置",
     retry: "重試",
     targetTableBusy: "另一個傳輸正在寫入目標資料表：{tables}",
+    ownershipTitle: "歸屬使用者確認",
+    ownershipMessage: "目標端缺少以下歸屬使用者或角色：{owners}。依原歸屬使用者套用可能失敗。",
+    ownershipSkipDetails: "選擇跳過後，將不執行物件歸屬變更語句，資料表資料和其他結構同步會繼續執行。",
+    ownershipTargetOwner: "選擇確認後，缺失歸屬使用者對應的物件會重歸屬至目標連線使用者：{owner}。",
+    ownershipSkip: "跳過",
+    ownershipConfirm: "確認",
     selectConnection: "選擇連線",
     selectDatabase: "選擇資料庫",
     selectSchema: "選擇結構描述",

apps/desktop/src/lib/backend/api.ts

@@ -278,6 +278,7 @@ export const nacosRawRequest = forward("nacosRawRequest");
 // Data Transfer
 export const startTransfer = forward("startTransfer");
 export const cancelTransfer = forward("cancelTransfer");
+export const previewTransferOwnership = forward("previewTransferOwnership");
 export const sortTablesByFkDependency = forward("sortTablesByFkDependency");
 
 // Table File Import
@@ -511,6 +512,8 @@ export type {
   TransferProgress,
   TransferMode,
   TransferTableNameCase,
+  TransferOwnershipPolicy,
+  TransferOwnershipPreview,
   TableImportMode,
   TableImportStatus,
   TableImportSourceFormat,

apps/desktop/src/lib/backend/http.ts

@@ -75,6 +75,7 @@ import type {
   SqlFileProgress,
   TransferRequest,
   TransferProgress,
+  TransferOwnershipPreview,
   TableImportPreviewRequest,
   TableImportPreview,
   TableImportRequest,
@@ -1319,6 +1320,10 @@ export async function cancelTransfer(transferId: string): Promise<void> {
   return post("/api/transfer/cancel", { transferId });
 }
 
+export async function previewTransferOwnership(request: TransferRequest): Promise<TransferOwnershipPreview> {
+  return post("/api/transfer/ownership-preview", { request });
+}
+
 export interface SortTablesByFkOptions {
   connectionId: string;
   database: string;

apps/desktop/src/lib/backend/tauri.ts

@@ -1889,6 +1889,7 @@ export async function listenSqlFileProgress(handler: (progress: SqlFileProgress)
 // --- Data Transfer ---
 export type TransferMode = "append" | "overwrite" | "upsert";
 export type TransferTableNameCase = "preserve" | "lower" | "upper";
+export type TransferOwnershipPolicy = "preserve" | "skip" | "reassignMissing";
 
 export interface TransferRequest {
   transferId: string;
@@ -1902,9 +1903,15 @@ export interface TransferRequest {
   createTable: boolean;
   mode: TransferMode;
   targetTableNameCase: TransferTableNameCase;
+  ownershipPolicy?: TransferOwnershipPolicy;
   batchSize: number;
 }
 
+export interface TransferOwnershipPreview {
+  missingOwners: string[];
+  targetOwner: string;
+}
+
 export interface TransferProgress {
   transferId: string;
   table: string;
@@ -1943,6 +1950,10 @@ export async function cancelTransfer(transferId: string): Promise<void> {
   return invoke("cancel_transfer", { transferId });
 }
 
+export async function previewTransferOwnership(request: TransferRequest): Promise<TransferOwnershipPreview> {
+  return invoke("preview_transfer_ownership", { request });
+}
+
 export interface SortTablesByFkOptions {
   connectionId: string;
   database: string;