fix: 采集失败不降级有数据分行+任务领取计数对齐实际分发行数

- 采集失败时按 latest_likes 分流：无数据才标 failed，已有历史数据保持
  success 并注明沿用上次数据，collection_updated_at 不动；run 行照实记失败
- 种子 seedIfEmpty 末尾统一对账 claimed_quantity，杜绝演示数据口径漂移
- 新增 mysql/0021 对账迁移，修复 0020 物理合并遗留的生产计数漂移
- 运营端展示全面改读实时 dist_total（任务卡双面板/项目树/概览/进度），
  project-service 查询补 dist_total 子查询
- 走查实证：卡片 7/18 vs 详情已领取 2 两处口径打架；保存采集计划补采
  失败会把历史成功行改写为 failed

lib/collection-service.ts

@@ -355,14 +355,25 @@ export async function collectDistributionMetrics(
         .bind(message, run.id),
       db
         .prepare(
+          // 已有历史数据（此前采集成功过）的分行失败时不降级为 failed：
+          // 保留 success 状态与数据时间，仅在描述里说明本次刷新失败。
           `UPDATE distributions
-           SET collection_status = 'failed',
-               collection_status_description = ?,
-               collection_updated_at = CURRENT_TIMESTAMP,
+           SET collection_status = CASE
+             WHEN latest_likes IS NULL THEN 'failed'
+             ELSE 'success'
+           END,
+               collection_status_description = CASE
+             WHEN latest_likes IS NULL THEN ?
+             ELSE ?
+           END,
+               collection_updated_at = CASE
+             WHEN latest_likes IS NULL THEN CURRENT_TIMESTAMP
+             ELSE collection_updated_at
+           END,
                updated_at = CURRENT_TIMESTAMP
            WHERE id = ?`,
         )
-        .bind(message, distributionId),
+        .bind(message, `${message}，沿用上次采集数据`, distributionId),
     ]);
     throw error;
   }

lib/mvp-db.ts

@@ -853,6 +853,18 @@ export async function seedIfEmpty() {
     );
   }
 
+  // 任务卡与详情的「已领取」以 claimed_quantity 为口径，领取/释放路径会
+  // 增减它；种子阶段的手写数字与实际分发行数容易漂移，最后统一对账。
+  batch.push(
+    db
+      .prepare(
+        `UPDATE tasks
+         SET claimed_quantity = (
+           SELECT COUNT(*) FROM distributions d WHERE d.task_id = tasks.id
+         )`,
+      ),
+  );
+
   await db.batch(batch);
 }
 

lib/project-service.ts

@@ -51,6 +51,7 @@ export type ProjectTaskRow = {
   task_chat_id: string;
   recovery_enabled: number;
   recovery_due_at: string;
+  dist_total: number;
   recovery_submitted: number;
 };
 
@@ -287,6 +288,7 @@ export async function getProjectDetail(
       `SELECT id, name, brand, quantity, claimed_quantity, due_at, status,
               task_type, platform, content_format, share_token, owner_userid, task_chat_id,
               recovery_enabled, recovery_due_at,
+              (SELECT COUNT(*) FROM distributions d WHERE d.task_id = t.id) AS dist_total,
               (SELECT COUNT(*) FROM distributions d WHERE d.task_id = t.id AND d.result_submitted_at IS NOT NULL) AS recovery_submitted
        FROM tasks t WHERE t.project_id = ?
        ORDER BY t.created_at DESC`,