fix: 修复两端走查发现的4个UI断点

- 门户回填表单:缺发布截图时提交按钮前置禁用并提示「先上传发布截图，
  链接回填需以截图为凭证」，不再等提交后才 toast 报错(服务端守卫保留)
- 门户笔记详情:回填链接前收起回收区块的说明与示例图，只留一行锁定提示，
  降低回填阶段信息密度
- 运营端分发表:数据状态按任务采集计划显示等待日(等待D{首个采集日})，
  未设置计划时显示「待设置采集计划」，不再写死「等待D2」
- 截图包回收清单:序号列对无 source_row 的内容回退行号；种子内容补
  source_row，演示数据导出不再出现空序号

lib/mvp-db.ts

@@ -640,8 +640,8 @@ export async function seedIfEmpty() {
     batch.push(
       db
         .prepare(
-          `INSERT INTO contents (id, task_id, title, body, status)
-           VALUES (?, ?, ?, ?, ?)`,
+          `INSERT INTO contents (id, task_id, title, body, status, source_row)
+           VALUES (?, ?, ?, ?, ?, ?)`,
         )
         .bind(
           `content-s-${index + 1}`,
@@ -649,6 +649,7 @@ export async function seedIfEmpty() {
           title,
           "来自飞书内容表的完整笔记正文与素材说明。",
           index < 9 ? "allocated" : "available",
+          index + 1,
         ),
     );
   });
@@ -656,8 +657,8 @@ export async function seedIfEmpty() {
     batch.push(
       db
         .prepare(
-          `INSERT INTO contents (id, task_id, title, body, status)
-           VALUES (?, ?, ?, ?, ?)`,
+          `INSERT INTO contents (id, task_id, title, body, status, source_row)
+           VALUES (?, ?, ?, ?, ?, ?)`,
         )
         .bind(
           `content-l-${index + 1}`,
@@ -665,6 +666,7 @@ export async function seedIfEmpty() {
           title,
           "来自飞书内容表的完整笔记正文与素材说明。",
           index < 6 ? "allocated" : "available",
+          index + 1,
         ),
     );
   });
@@ -898,7 +900,9 @@ export async function getDashboardData(ownerUserid?: string) {
             t.task_type AS task_type,
             t.platform AS task_platform,
             t.content_format AS content_format,
-            t.due_at AS due_at
+            t.due_at AS due_at,
+            t.collection_days AS task_collection_days,
+            t.collection_start_date AS task_collection_start_date
           FROM distributions d
           JOIN contents c ON c.id = d.content_id
           JOIN partners p ON p.id = d.partner_id