feat(bulk-edit): add i18n keys, error mapping, and regenerate api types

- 14 new Paraglide keys in de/en/es for the bulk-edit UI strings (selection
  bar, callout, badges, save progress, retry, error)
- BULK_EDIT_TOO_MANY_IDS added to errors.ts type union and getErrorMessage()
- Regenerated api.ts now includes /api/documents/{bulk,batch-metadata,ids}
  and the DocumentBulkEditDTO / BulkEditResult / DocumentBatchSummary schemas

Refs #225

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/messages/de.json

@@ -873,5 +873,19 @@
 	"bulk_drop_zone_label": "Dateien ablegen",
 	"bulk_remove_file": "Entfernen",
 	"bulk_title_single": "Neues Dokument",
-	"bulk_title_multi": "Neue Dokumente"
+	"bulk_title_multi": "Neue Dokumente",
+	"bulk_edit_button": "Massenbearbeitung",
+	"bulk_edit_n_selected": "{count} Dokumente ausgewählt",
+	"bulk_edit_clear_all": "Alles aufheben",
+	"bulk_edit_all_x": "Alle {count} editieren",
+	"bulk_edit_select_document": "Dokument {title} auswählen",
+	"bulk_edit_hint": "Nur ausgefüllte Felder werden angewendet. Tags und Empfänger werden hinzugefügt, nicht ersetzt.",
+	"bulk_edit_badge_additive": "+ wird hinzugefügt",
+	"bulk_edit_badge_replace": "wird ersetzt",
+	"bulk_edit_save_progress": "Batch {done} von {total} verarbeitet",
+	"bulk_edit_save_partial": "{done} von {total} gespeichert",
+	"bulk_edit_retry": "Erneut versuchen",
+	"bulk_edit_title": "Massenbearbeitung",
+	"bulk_edit_save_button": "Anwenden",
+	"error_bulk_edit_too_many_ids": "Maximal 500 Dokumente pro Anfrage."
 }

frontend/messages/en.json

@@ -873,5 +873,19 @@
 	"bulk_drop_zone_label": "Drop files here",
 	"bulk_remove_file": "Remove",
 	"bulk_title_single": "New Document",
-	"bulk_title_multi": "New Documents"
+	"bulk_title_multi": "New Documents",
+	"bulk_edit_button": "Bulk edit",
+	"bulk_edit_n_selected": "{count} documents selected",
+	"bulk_edit_clear_all": "Clear all",
+	"bulk_edit_all_x": "Edit all {count}",
+	"bulk_edit_select_document": "Select document {title}",
+	"bulk_edit_hint": "Only filled fields are applied. Tags and receivers are added, not replaced.",
+	"bulk_edit_badge_additive": "+ added",
+	"bulk_edit_badge_replace": "replaced",
+	"bulk_edit_save_progress": "Batch {done} of {total} processed",
+	"bulk_edit_save_partial": "{done} of {total} saved",
+	"bulk_edit_retry": "Retry",
+	"bulk_edit_title": "Bulk edit",
+	"bulk_edit_save_button": "Apply",
+	"error_bulk_edit_too_many_ids": "Maximum 500 documents per request."
 }

frontend/messages/es.json

@@ -873,5 +873,19 @@
 	"bulk_drop_zone_label": "Soltar archivos aquí",
 	"bulk_remove_file": "Eliminar",
 	"bulk_title_single": "Nuevo Documento",
-	"bulk_title_multi": "Nuevos Documentos"
+	"bulk_title_multi": "Nuevos Documentos",
+	"bulk_edit_button": "Edición masiva",
+	"bulk_edit_n_selected": "{count} documentos seleccionados",
+	"bulk_edit_clear_all": "Limpiar todo",
+	"bulk_edit_all_x": "Editar los {count}",
+	"bulk_edit_select_document": "Seleccionar documento {title}",
+	"bulk_edit_hint": "Solo se aplican los campos rellenados. Las etiquetas y los destinatarios se añaden, no se reemplazan.",
+	"bulk_edit_badge_additive": "+ se añade",
+	"bulk_edit_badge_replace": "se reemplaza",
+	"bulk_edit_save_progress": "Lote {done} de {total} procesado",
+	"bulk_edit_save_partial": "{done} de {total} guardado",
+	"bulk_edit_retry": "Reintentar",
+	"bulk_edit_title": "Edición masiva",
+	"bulk_edit_save_button": "Aplicar",
+	"error_bulk_edit_too_many_ids": "Máximo 500 documentos por solicitud."
 }

frontend/src/lib/errors.ts

@@ -42,6 +42,7 @@ export type ErrorCode =
 	| 'FORBIDDEN'
 	| 'VALIDATION_ERROR'
 	| 'BATCH_TOO_LARGE'
+	| 'BULK_EDIT_TOO_MANY_IDS'
 	| 'INTERNAL_ERROR';
 
 export interface BackendError {
@@ -142,6 +143,8 @@ export function getErrorMessage(code: ErrorCode | string | undefined): string {
 			return m.error_validation_error();
 		case 'BATCH_TOO_LARGE':
 			return m.error_batch_too_large();
+		case 'BULK_EDIT_TOO_MANY_IDS':
+			return m.error_bulk_edit_too_many_ids();
 		default:
 			return m.error_internal_error();
 	}

frontend/src/lib/generated/api.ts

@@ -484,6 +484,22 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/documents/batch-metadata": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post: operations["batchMetadata"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/auth/reset-password": {
         parameters: {
             query?: never;
@@ -676,6 +692,22 @@ export interface paths {
         patch: operations["updateAnnotation"];
         trace?: never;
     };
+    "/api/documents/bulk": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch: operations["patchBulk"];
+        trace?: never;
+    };
     "/api/users/search": {
         parameters: {
             query?: never;
@@ -1156,6 +1188,22 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/documents/ids": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get: operations["getDocumentIds"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/documents/conversation": {
         parameters: {
             query?: never;
@@ -1707,6 +1755,15 @@ export interface components {
             filename?: string;
             code?: string;
         };
+        BatchMetadataRequest: {
+            ids: string[];
+        };
+        DocumentBatchSummary: {
+            /** Format: uuid */
+            id: string;
+            title: string;
+            pdfUrl: string;
+        };
         ResetPasswordRequest: {
             token?: string;
             newPassword?: string;
@@ -1782,6 +1839,26 @@ export interface components {
             /** Format: double */
             height?: number;
         };
+        DocumentBulkEditDTO: {
+            documentIds?: string[];
+            tagNames?: string[];
+            /** Format: uuid */
+            senderId?: string;
+            receiverIds?: string[];
+            documentLocation?: string;
+            archiveBox?: string;
+            archiveFolder?: string;
+        };
+        BulkEditError: {
+            /** Format: uuid */
+            id: string;
+            message: string;
+        };
+        BulkEditResult: {
+            /** Format: int32 */
+            updated: number;
+            errors: components["schemas"]["BulkEditError"][];
+        };
         TranscriptionWeeklyStatsDTO: {
             /** Format: int64 */
             segmentationCount: number;
@@ -1833,7 +1910,6 @@ export interface components {
             /** Format: uuid */
             id?: string;
             displayName?: string;
-            personType?: string;
             firstName?: string;
             lastName?: string;
             /** Format: int64 */
@@ -1844,6 +1920,7 @@ export interface components {
             deathYear?: number;
             alias?: string;
             notes?: string;
+            personType?: string;
         };
         SenderModel: {
             /** Format: uuid */
@@ -3242,6 +3319,30 @@ export interface operations {
             };
         };
     };
+    batchMetadata: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["BatchMetadataRequest"];
+            };
+        };
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["DocumentBatchSummary"][];
+                };
+            };
+        };
+    };
     resetPassword: {
         parameters: {
             query?: never;
@@ -3578,6 +3679,30 @@ export interface operations {
             };
         };
     };
+    patchBulk: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody: {
+            content: {
+                "application/json": components["schemas"]["DocumentBulkEditDTO"];
+            };
+        };
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": components["schemas"]["BulkEditResult"];
+                };
+            };
+        };
+    };
     search: {
         parameters: {
             query?: {
@@ -4244,6 +4369,36 @@ export interface operations {
             };
         };
     };
+    getDocumentIds: {
+        parameters: {
+            query?: {
+                q?: string;
+                from?: string;
+                to?: string;
+                senderId?: string;
+                receiverId?: string;
+                tag?: string[];
+                tagQ?: string;
+                status?: "PLACEHOLDER" | "UPLOADED" | "TRANSCRIBED" | "REVIEWED" | "ARCHIVED";
+                tagOp?: string;
+            };
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description OK */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "*/*": string[];
+                };
+            };
+        };
+    };
     getConversation: {
         parameters: {
             query: {