fix: surface missing knowledge files

digital-avatar-app/src/views/KnowledgeManage.vue

@@ -37,10 +37,10 @@
             <div class="card-content">
               <div class="card-title-row">
                 <strong>{{ doc.filename }}</strong>
-                <span class="status-pill" :class="{ pending: !doc.vectorized }">{{ doc.vectorized ? '已入库' : '处理中' }}</span>
+                <span class="status-pill" :class="{ pending: !doc.vectorized && doc.filePresent !== false, missing: doc.filePresent === false }">{{ doc.filePresent === false ? '文件缺失' : (doc.vectorized ? '已入库' : '处理中') }}</span>
               </div>
               <p class="card-meta">{{ doc.fileType.toUpperCase() }} · {{ formatSize(doc.fileSize) }} · {{ formatDate(doc.createdAt) }}</p>
-              <p class="card-detail">{{ doc.vectorized ? `已切分 ${doc.chunkCount || 0} 段，可用于对话` : '正在解析并建立知识索引' }}</p>
+              <p class="card-detail">{{ doc.filePresent === false ? '原文件不可用，请删除后重新上传' : (doc.vectorized ? `已切分 ${doc.chunkCount || 0} 段，可用于对话` : '正在解析并建立知识索引') }}</p>
             </div>
             <button class="card-delete" @click="removeDoc(doc.id)">删除</button>
           </article>
@@ -268,6 +268,7 @@ onMounted(async () => {
 .card-title-row { display: flex; align-items: center; gap: 8px; min-width: 0; }
 .card-title-row strong { min-width: 0; flex: 1; overflow: hidden; color: #27201C; font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
 .status-pill { flex: 0 0 auto; display: inline-flex; padding: 4px 7px; border-radius: 999px; color: #15803D; background: #ECFDF3; font-size: 10px; white-space: nowrap; }.status-pill.pending { color: #B45309; background: #FFFBEB; }
+.status-pill.missing { color: #B91C1C; background: #FEF2F2; }
 .card-meta, .card-detail { margin: 5px 0 0; color: #9398AE; font-size: 11px; line-height: 1.4; }.card-detail { color: #8B6B58; }
 .card-delete { flex: 0 0 auto; align-self: center; border: 0; color: #EF4444; background: #FEF2F2; border-radius: 8px; padding: 7px 9px; font-size: 12px; cursor: pointer; }
 .card-empty { padding: 42px 16px; border: 1px dashed #F1D9C3; border-radius: 16px; color: #9398AE; background: #fff; font-size: 14px; text-align: center; }