fix: harden exploration data flow

apps/web_v1/src/pages/workspace-explore.tsx

@@ -156,7 +156,7 @@ export function WorkspaceExplorePage({
       ...sourceRecords.map((source) => ({
         ...source,
         icon: source.iconUrl
-          ? <img className="explore-source-image" src={source.iconUrl} alt="" />
+          ? <img className="explore-source-image" src={source.iconUrl} alt="" loading="lazy" referrerPolicy="no-referrer" />
           : sourceIcon(source.kind),
         color: sourceColor(source.kind),
       })),
@@ -243,14 +243,18 @@ export function WorkspaceExplorePage({
   function deleteSource(source: DataSourceCard) {
     Modal.confirm({
       title: `删除“${source.name}”数据源？`,
-      content: '删除后，该数据源及其采集条目和待执行任务都会移除。',
+      content: '删除后，该数据源及其采集条目都会移除。',
       okButtonProps: { status: 'danger' },
       onOk: async () => {
         try {
           await onDeleteSource(source.id)
           setSourceRecords((current) => current.filter((item) => item.id !== source.id))
           setItems((current) => current.filter((item) => item.sourceId !== source.id))
-          if (activeSourceID === source.id) setActiveSourceID('all')
+          if (activeSourceID === source.id) {
+            setActiveSourceID('all')
+          } else {
+            setItemTotal((current) => Math.max(0, current - source.itemCount))
+          }
           Message.success('数据源已删除')
         } catch (error) {
           Message.error(error instanceof Error ? error.message : '数据源删除失败')
@@ -275,9 +279,14 @@ export function WorkspaceExplorePage({
         setSourceRecords(nextSources)
         setItems(nextPage.items)
         setItemTotal(nextPage.total)
-        const failed = results.filter((result) => result.status === 'failed').length
-        if (failed > 0) {
-          Message.warning(`${results.length - failed} 个数据源采集完成，${failed} 个失败`)
+        const failedResults = results.filter((result) => result.status === 'failed')
+        if (failedResults.length > 0) {
+          const firstFailure = failedResults[0]
+          const failedSource = sourceRecords.find((source) => source.id === firstFailure.sourceId)
+          const detail = firstFailure.result
+            ? `；${failedSource?.name || '数据源'}：${firstFailure.result.slice(0, 120)}`
+            : ''
+          Message.warning(`${results.length - failedResults.length} 个数据源采集完成，${failedResults.length} 个失败${detail}`)
         } else {
           Message.success(`已完成 ${results.length} 个数据源采集任务`)
         }
@@ -459,7 +468,13 @@ export function WorkspaceExplorePage({
                   <Text type="secondary">{itemTime(selected)}</Text>
                 </Space>
                 {selected.imageUrl ? (
-                  <img className="explore-article-image" src={selected.imageUrl} alt="" />
+                  <img
+                    className="explore-article-image"
+                    src={selected.imageUrl}
+                    alt=""
+                    loading="lazy"
+                    referrerPolicy="no-referrer"
+                  />
                 ) : null}
                 <Paragraph className="explore-article-content">{selected.content || selected.summary || '暂无正文'}</Paragraph>
               </article>