feat: 采集失败KOC补交截图闭环 + 任务中心分发详情弹窗

公开数据补交闭环（F1）：
- distributions 新增 public_metrics_screenshot_key（mysql/0022 迁移）
- KOC 门户：链接已回填但采集失败时展示补交数据截图入口（kind=public-metrics）
- 运营端：回收队列"核对补录"支持公开互动数据（赞/藏/评），按补交截图补录后采集状态置成功
- 企微催办：采集失败纳入待办（公开数据待补交）
- task-result-image 支持 kind=publish 输出发布截图

门户文案（F2）：
- 自动采集数据明确"由系统每天自动采集，无需你填写"，仅识别失败时才手动填写曝光/阅读

任务中心分发详情：
- 任务中心/数据回收的分发表行可点击，弹窗查看详情
- 详情按任务类型适配：发布阶段/数据回收（自动采集）/创作者数据（第7天）/截图回收四区块三段式布局

app/api/partner-image/route.ts

@@ -76,6 +76,7 @@ async function handleGet(request: Request) {
                     d.result_screenshot_key,
                     d.publish_screenshot_key,
                     d.screenshot_key,
+                    d.public_metrics_screenshot_key,
                     t.recovery_example_images
              FROM distributions d
              JOIN contents c ON c.id = d.content_id
@@ -92,6 +93,7 @@ async function handleGet(request: Request) {
             result_screenshot_key: string | null;
             publish_screenshot_key: string | null;
             screenshot_key: string | null;
+            public_metrics_screenshot_key: string | null;
             recovery_example_images: string;
           }>()
       : await getRawDb()
@@ -101,6 +103,7 @@ async function handleGet(request: Request) {
                     d.result_screenshot_key,
                     d.publish_screenshot_key,
                     d.screenshot_key,
+                    d.public_metrics_screenshot_key,
                     t.recovery_example_images
              FROM distributions d
              JOIN contents c ON c.id = d.content_id
@@ -118,6 +121,7 @@ async function handleGet(request: Request) {
             result_screenshot_key: string | null;
             publish_screenshot_key: string | null;
             screenshot_key: string | null;
+            public_metrics_screenshot_key: string | null;
             recovery_example_images: string;
           }>();
     const asset =
@@ -142,6 +146,10 @@ async function handleGet(request: Request) {
           ? row?.screenshot_key?.startsWith("creator-center/")
             ? { index: 1, key: row.screenshot_key }
             : undefined
+        : imageKind === "public-metrics"
+          ? row?.public_metrics_screenshot_key?.startsWith("public-metrics/")
+            ? { index: 1, key: row.public_metrics_screenshot_key }
+            : undefined
         : imageKind === "video"
           ? row
             ? findAsset(row.video_assets, imageIndex, ["content-videos/"])
@@ -196,7 +204,9 @@ async function handleGet(request: Request) {
     const headers = new Headers();
     object.writeHttpMetadata(headers);
     const isMutableEvidence =
-      imageKind === "publish" || imageKind === "creator";
+      imageKind === "publish" ||
+      imageKind === "creator" ||
+      imageKind === "public-metrics";
     headers.set(
       "Cache-Control",
       isMutableEvidence ? "private, no-store" : "private, max-age=3600",