feat(knowledge): add FAQ Excel import export

web/messages/en-US.json

@@ -1894,32 +1894,40 @@
     "answer": "Answer",
     "answerPlaceholder": "Enter the FAQ answer",
     "similarQuestionsPlaceholder": "One similar question per line",
-    "fileEmpty": "The file is empty.",
-    "missingFAQColumns": "The import template must include question and answer columns.",
-    "skipRowMissingFAQ": "Row {row} is missing a question or answer and was skipped.",
-    "importNoRows": "No FAQ rows to import.",
-    "parsedFAQRows": "{count} FAQ rows parsed.",
-    "parseImportFailed": "Could not parse the import file.",
     "importRowFailed": "Row {row}: {message}",
     "importFailed": "Import failed.",
-    "importSuccess": "{count} FAQs imported.",
-    "importSomeFailed": "{count} FAQs failed to import.",
     "importFAQTitle": "Import FAQ",
-    "importFAQDescription": "Upload a CSV file to import FAQs in bulk. Required columns: question and answer. Separate similarQuestions with | or line breaks.",
+    "importFAQDescription": "Upload an Excel file to import FAQs in bulk. Required columns: primary question and answer. Put one similar question per line in the same cell.",
     "downloadTemplate": "Download Template",
+    "downloadTemplateFailed": "Could not download the template.",
     "importing": "Importing...",
     "startImport": "Start Import",
-    "startImportWithCount": "Start Import ({count})",
     "importFile": "Import File",
     "chooseFile": "Choose File",
-    "importFileDescription": "Supports UTF-8 CSV or tab-delimited text files.",
+    "importFileDescription": "Only .xlsx files are supported.",
     "currentFile": "Current file: {name}",
     "importHint": "Import Notes",
-    "importPreview": "Import Preview",
-    "rowNumber": "Row {row}",
-    "similarQuestionShort": "Similar: {value}",
+    "importXlsxHint": "The template columns are primary question, answer, similar questions, and remark. Put one similar question per line inside the cell.",
+    "importXlsxOnly": "Only .xlsx files are supported.",
+    "importMode": "Import Mode",
+    "selectImportMode": "Select import mode",
+    "searchImportMode": "Search import mode",
+    "emptyImportMode": "No import modes found",
+    "importModeAppend": "Append Import",
+    "importModeOverwrite": "Overwrite Import",
+    "importModeAppendDescription": "Only creates primary questions that do not already exist. Existing primary questions are skipped.",
+    "importModeOverwriteDescription": "Matches by primary question and updates existing FAQs. Missing primary questions are created.",
+    "importResult": "Import Result",
+    "importTotal": "Total",
+    "importCreated": "Created",
+    "importUpdated": "Updated",
+    "importSkipped": "Skipped",
+    "importFailedCount": "Failed",
+    "importFAQResultToast": "Created {created}, updated {updated}, skipped {skipped}, failed {failed}",
+    "exportFAQ": "Export FAQ",
+    "exportFAQSuccess": "FAQ export download started.",
+    "exportFAQFailed": "Could not export FAQs.",
     "none": "None",
-    "previewAfterUpload": "Upload a file to preview the first 5 FAQs.",
     "allChannels": "All channels",
     "channelIM": "Support chat",
     "channelAgentAssist": "Agent assist",