feat: 日聚合服务与命令 + 索引迁移打包（Task3 审查结论）

- refresh_daily：按上海自然日聚合 pv/uv/sessions/new_visitors，update_or_create 幂等 - refresh_stats 管理命令：回刷近 N 天（生产由 1Panel 每日 00:10 调度，见 Task 22） - 索引打包（0002）：Event/VisitSession 增加 (site, 时间) 日聚合索引；删 5 个冗余单列 FK 索引（Event.site/session、VisitSession.site/visitor、DailyStat.site），保留 Event.visitor/Visitor.site；sqlite PRAGMA 实证级联索引完整、EXPLAIN 走新索引 - test_models：IntegrityError 断言收紧 + Site 级联删除测试 Co-Authored-By: Claude Code <noreply@anthropic.com>
2026-09-15 13:38:01 +08:00
parent f69822859e
commit cc1ea6805b
8 changed files with 153 additions and 7 deletions
@@ -0,0 +1,47 @@
+# Generated by Django 5.2.17 on 2026-09-15 05:36
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tracker', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='dailystat',
+            name='site',
+            field=models.ForeignKey(db_index=False, on_delete=django.db.models.deletion.CASCADE, related_name='daily_stats', to='tracker.site'),
+        ),
+        migrations.AlterField(
+            model_name='event',
+            name='session',
+            field=models.ForeignKey(db_index=False, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='events', to='tracker.visitsession'),
+        ),
+        migrations.AlterField(
+            model_name='event',
+            name='site',
+            field=models.ForeignKey(db_index=False, on_delete=django.db.models.deletion.CASCADE, related_name='events', to='tracker.site'),
+        ),
+        migrations.AlterField(
+            model_name='visitsession',
+            name='site',
+            field=models.ForeignKey(db_index=False, on_delete=django.db.models.deletion.CASCADE, related_name='sessions', to='tracker.site'),
+        ),
+        migrations.AlterField(
+            model_name='visitsession',
+            name='visitor',
+            field=models.ForeignKey(db_index=False, on_delete=django.db.models.deletion.CASCADE, related_name='sessions', to='tracker.visitor'),
+        ),
+        migrations.AddIndex(
+            model_name='event',
+            index=models.Index(fields=['site', 'occurred_at'], name='event_site_id_f158ab_idx'),
+        ),
+        migrations.AddIndex(
+            model_name='visitsession',
+            index=models.Index(fields=['site', 'started_at'], name='visit_sessi_site_id_73fae1_idx'),
+        ),
+    ]