体验修复:概览看当日具体任务+模板实时对账+打卡圈缩小+孩子我的记录

- 家长学习概览日历点击某天可查看当日具体任务及完成状态(1.1)
- 今日任务快照改为实时对账:模板删除则移除未完成快照、新增则补上,
  解决"模板无任务但孩子端仍显示"(1.2);历史日保持不变
- 孩子端打卡选中圈由 size-12 缩小到 size-9,更精致(2.1)
- 孩子端新增"我的记录":累计打卡天数 + 最近7天已完成任务(2.2)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/lib/tasks.ts

@@ -2,7 +2,7 @@
 import { and, asc, eq, inArray } from "drizzle-orm";
 import { db } from "@/db";
 import { photos, taskInstances, taskTemplates } from "@/db/schema";
-import { dowOf, mondayOf } from "@/lib/dates";
+import { dowOf, mondayOf, todayStr, daysAgo } from "@/lib/dates";
 import { viewUrl } from "@/lib/oss";
 
 // 模板是否覆盖某一天(weekly/date/range/week 四种生效方式)
@@ -18,6 +18,83 @@ function coversDate(
   return false;
 }
 
+// 生成/对账某天任务快照。历史日:只生成一次(保历史);今天:实时对账,
+// 模板删了→移除未完成快照,模板加了→补上,保证孩子端与家长模板一致。
+export async function ensureDay(childId: number, date: string) {
+  const isToday = date === todayStr();
+  await db.transaction(async (tx) => {
+    const all = await tx
+      .select()
+      .from(taskTemplates)
+      .where(eq(taskTemplates.childUserId, childId))
+      .orderBy(asc(taskTemplates.sortOrder));
+    const templates = all.filter((t) => coversDate(t, date));
+    const instances = await tx
+      .select()
+      .from(taskInstances)
+      .where(and(eq(taskInstances.childUserId, childId), eq(taskInstances.date, date)));
+
+    if (!isToday) {
+      if (instances.length > 0) return;
+      if (templates.length > 0)
+        await tx.insert(taskInstances).values(
+          templates.map((t) => ({
+            childUserId: childId,
+            date,
+            title: t.title,
+            subject: t.subject,
+            requiresPhoto: t.requiresPhoto,
+            sortOrder: t.sortOrder,
+            sourceTemplateId: t.id,
+          })),
+        );
+      return;
+    }
+
+    // 今天:对账
+    const tIds = new Set(templates.map((t) => t.id));
+    for (const inst of instances) {
+      if (
+        inst.status === "pending" &&
+        inst.sourceTemplateId != null &&
+        !tIds.has(inst.sourceTemplateId)
+      ) {
+        await tx.delete(taskInstances).where(eq(taskInstances.id, inst.id));
+      }
+    }
+    const haveIds = new Set(instances.map((i) => i.sourceTemplateId));
+    for (const t of templates) {
+      if (!haveIds.has(t.id)) {
+        await tx.insert(taskInstances).values({
+          childUserId: childId,
+          date,
+          title: t.title,
+          subject: t.subject,
+          requiresPhoto: t.requiresPhoto,
+          sortOrder: t.sortOrder,
+          sourceTemplateId: t.id,
+        });
+      }
+    }
+  });
+}
+
+// 孩子打卡统计:累计打卡天数 + 最近 n 天已完成任务
+export async function childCheckStats(childId: number, n = 7) {
+  const rows = await db
+    .select({ date: taskInstances.date, status: taskInstances.status, title: taskInstances.title })
+    .from(taskInstances)
+    .where(eq(taskInstances.childUserId, childId));
+  const doneDates = new Set(rows.filter((r) => r.status === "done").map((r) => r.date));
+  const recent: { date: string; tasks: string[] }[] = [];
+  for (let i = 0; i < n; i++) {
+    const d = daysAgo(i);
+    const done = rows.filter((r) => r.date === d && r.status === "done").map((r) => r.title);
+    if (done.length > 0) recent.push({ date: d, tasks: done });
+  }
+  return { totalDays: doneDates.size, recent };
+}
+
 export type TaskView = {
   id: number;
   title: string;
@@ -28,39 +105,6 @@ export type TaskView = {
   photoUrls: string[];
 };
 
-// 确保某天的任务快照存在:第一次访问当天时由模板生成,之后读快照
-export async function ensureDay(childId: number, date: string) {
-  await db.transaction(async (tx) => {
-    const existing = await tx
-      .select({ id: taskInstances.id })
-      .from(taskInstances)
-      .where(and(eq(taskInstances.childUserId, childId), eq(taskInstances.date, date)))
-      .limit(1);
-    if (existing.length > 0) return;
-
-    const all = await tx
-      .select()
-      .from(taskTemplates)
-      .where(eq(taskTemplates.childUserId, childId))
-      .orderBy(asc(taskTemplates.sortOrder));
-    const templates = all.filter((t) => coversDate(t, date));
-
-    if (templates.length > 0) {
-      await tx.insert(taskInstances).values(
-        templates.map((t) => ({
-          childUserId: childId,
-          date,
-          title: t.title,
-          subject: t.subject,
-          requiresPhoto: t.requiresPhoto,
-          sortOrder: t.sortOrder,
-          sourceTemplateId: t.id,
-        })),
-      );
-    }
-  });
-}
-
 // 孩子端当日任务视图(含照片签名地址)
 export async function dayTasks(childId: number, date: string): Promise<TaskView[]> {
   await ensureDay(childId, date);