feat: 支持知识库导入 PPTX 与 XLSX 文档

- 打通 Office 文档桥接解析、解析进度承接与图片引用改写

- 落地 PPTX 按页分块、XLSX 行窗口分块以及预览与检索渲染闭环

easyflow-ui-admin/app/src/views/ai/documentCollection/SegmenterDoc.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { reactive, ref, watch } from 'vue';
+import { computed, reactive, ref, watch } from 'vue';
 
 import { $t } from '@easyflow/locales';
 
@@ -8,6 +8,7 @@ import {
   ElForm,
   ElFormItem,
   ElInput,
+  ElInputNumber,
   ElMessage,
   ElOption,
   ElSelect,
@@ -85,7 +86,7 @@ const createDefaultFormState = () => ({
   mdSplitterLevel: 2,
   overlapSize: 128,
   regex: '',
-  rowsPerChunk: 1,
+  rowsPerChunk: 10,
   strategyCode: 'AUTO',
 });
 
@@ -126,6 +127,17 @@ const strategyOptions = [
   },
 ];
 
+const fileExt = computed(() =>
+  String(props.documentTitle || '')
+    .split('.')
+    .pop()
+    ?.toLowerCase() || '',
+);
+
+const isPptx = computed(() => fileExt.value === 'pptx');
+const isXlsx = computed(() => fileExt.value === 'xlsx');
+const showStrategySelector = computed(() => !isPptx.value && !isXlsx.value);
+
 const mdLevels = [1, 2, 3, 4, 5, 6];
 
 const showLengthSettings = (strategyCode?: string) =>
@@ -150,9 +162,22 @@ const resetPreviewState = () => {
   previewError.value = '';
 };
 
-const buildStrategyConfig = () => ({
-  ...formState,
-});
+const buildStrategyConfig = () => {
+  if (isPptx.value) {
+    return {
+      strategyCode: 'OFFICE_PPTX_PAGE',
+    };
+  }
+  if (isXlsx.value) {
+    return {
+      rowsPerChunk: formState.rowsPerChunk,
+      strategyCode: 'OFFICE_XLSX_ROW_WINDOW',
+    };
+  }
+  return {
+    ...formState,
+  };
+};
 
 const normalizeSourceRanges = (ranges?: SourceRange[]) =>
   Array.isArray(ranges)
@@ -292,6 +317,13 @@ watch(
     previewSequence += 1;
     clearPreviewTimer();
     Object.assign(formState, createDefaultFormState());
+    if (isPptx.value) {
+      formState.strategyCode = 'OFFICE_PPTX_PAGE';
+    }
+    if (isXlsx.value) {
+      formState.strategyCode = 'OFFICE_XLSX_ROW_WINDOW';
+      formState.rowsPerChunk = 10;
+    }
     resetPreviewState();
     if (activeDocumentId.value) {
       schedulePreviewGeneration();
@@ -317,6 +349,7 @@ watch(
     <ElForm :model="formState" label-position="top" class="workbench__form">
       <div class="workbench__form-grid">
         <ElFormItem
+          v-if="showStrategySelector"
           :label="$t('documentCollection.importDoc.strategySelection')"
           class="workbench__form-full"
         >
@@ -330,6 +363,20 @@ watch(
           </ElSelect>
         </ElFormItem>
 
+        <ElFormItem
+          v-if="isXlsx"
+          label="每多少行分一块"
+          class="workbench__form-full"
+        >
+          <ElInputNumber
+            v-model="formState.rowsPerChunk"
+            :min="1"
+            :max="200"
+            :step="1"
+            class="workbench__rows-input"
+          />
+        </ElFormItem>
+
         <ElFormItem
           v-if="showLengthSettings(formState.strategyCode)"
           :label="$t('documentCollection.splitterDoc.chunkSize')"
@@ -478,6 +525,10 @@ watch(
   box-shadow: 0 0 0 1px rgb(15 23 42 / 7%) inset;
 }
 
+.workbench__rows-input {
+  width: 100%;
+}
+
 :deep(.workbench__form .el-slider__runway) {
   background: rgb(15 23 42 / 8%);
 }