feat: 实现小程序离线巡检与可靠同步

server-go/migrations/000007_inspection_idempotency.down.sql

@@ -0,0 +1,16 @@
+DROP INDEX IF EXISTS idx_inspection_records_user_idempotency;
+
+-- 恢复全局唯一索引前，先处理跨用户重复，保留所有记录。
+UPDATE inspection_records AS r
+SET idempotency_key = r.idempotency_key || '#' || r.id
+WHERE r.idempotency_key IS NOT NULL
+  AND EXISTS (
+      SELECT 1
+      FROM inspection_records AS x
+      WHERE x.idempotency_key = r.idempotency_key
+        AND x.id <> r.id
+  );
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_inspection_records_idempotency_key
+    ON inspection_records (idempotency_key)
+    WHERE idempotency_key IS NOT NULL;

server-go/migrations/000007_inspection_idempotency.up.sql

@@ -0,0 +1,17 @@
+-- 保留全部历史记录，只对同用户重复键追加记录 ID，避免迁移删除或丢失数据。
+UPDATE inspection_records AS r
+SET idempotency_key = r.idempotency_key || '#' || r.id
+WHERE r.idempotency_key IS NOT NULL
+  AND EXISTS (
+      SELECT 1
+      FROM inspection_records AS x
+      WHERE x.user_id IS NOT DISTINCT FROM r.user_id
+        AND x.idempotency_key = r.idempotency_key
+        AND x.id <> r.id
+  );
+
+DROP INDEX IF EXISTS idx_inspection_records_idempotency_key;
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_inspection_records_user_idempotency
+    ON inspection_records (user_id, idempotency_key)
+    WHERE idempotency_key IS NOT NULL;