perf: IoT 卡 30M 行分页查询优化（P95 17.9s → <500ms）

- 新增 is_standalone 物化列 + 触发器自动维护（迁移 056）
- 并行查询拆分：多店铺 IN 查询拆为 per-shop goroutine 并行 Index Scan
- 两阶段延迟 Join：深度分页（page≥50）走覆盖索引 Index Only Scan 取 ID 再回表
- COUNT 缓存：per-shop 并行 COUNT + Redis 30 分钟 TTL
- 索引优化：删除有害全局索引、新增 partial composite indexes（迁移 057/058）
- ICCID 模糊搜索路径隔离：trigram GIN 索引走独立查询路径
- 慢查询阈值从 100ms 调整为 500ms
- 新增 30M 测试数据种子脚本和 benchmark 工具

scripts/perf_query/deploy-perf-pg.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+set -e
+
+DATA_DIR="/mnt/data1/database/pgsql/pgdata_perf"
+CONTAINER="postgres-perf-test"
+
+echo "=========================================="
+echo " 性能测试 PostgreSQL 容器部署"
+echo "=========================================="
+
+if [ -d "$DATA_DIR" ] && [ "$(ls -A $DATA_DIR 2>/dev/null)" ]; then
+    echo "⚠️  数据目录已存在"
+    read -p "清空重建？(y/N): " confirm
+    if [ "$confirm" = "y" ] || [ "$confirm" = "Y" ]; then
+        docker stop $CONTAINER 2>/dev/null || true
+        docker rm $CONTAINER 2>/dev/null || true
+        sudo rm -rf "$DATA_DIR"
+    fi
+fi
+
+sudo mkdir -p "$DATA_DIR"
+sudo chown -R 999:999 "$DATA_DIR"
+
+# 第一步：用默认配置启动，让 PG 完成初始化
+echo "启动容器（默认配置初始化）..."
+docker compose -f docker-compose-perf.yml up -d
+
+echo "等待初始化完成..."
+for i in $(seq 1 30); do
+    if docker exec $CONTAINER pg_isready -U erp_pgsql -d junhong_cmp_test > /dev/null 2>&1; then
+        echo "✅ 初始化完成"
+        break
+    fi
+    [ $i -eq 30 ] && echo "❌ 超时" && docker logs $CONTAINER && exit 1
+    sleep 2
+done
+
+# 第二步：把优化后的配置覆盖到数据目录
+echo "注入优化配置..."
+docker cp postgresql-perf.conf $CONTAINER:/var/lib/postgresql/data/postgresql.conf
+
+# 第三步：重启让新配置生效
+echo "重启容器..."
+docker restart $CONTAINER
+
+echo "等待重启完成..."
+for i in $(seq 1 30); do
+    if docker exec $CONTAINER pg_isready -U erp_pgsql -d junhong_cmp_test > /dev/null 2>&1; then
+        echo "✅ 重启完成"
+        break
+    fi
+    [ $i -eq 30 ] && echo "❌ 超时" && docker logs --tail 20 $CONTAINER && exit 1
+    sleep 2
+done
+
+# 第四步：启用扩展
+echo "启用扩展..."
+docker exec $CONTAINER psql -U erp_pgsql -d junhong_cmp_test -c "CREATE EXTENSION IF NOT EXISTS pg_stat_statements;" 2>/dev/null || echo "pg_stat_statements 需要 shared_preload_libraries，跳过"
+docker exec $CONTAINER psql -U erp_pgsql -d junhong_cmp_test -c "CREATE EXTENSION IF NOT EXISTS pg_trgm;"
+
+# 验证
+echo ""
+echo "=========================================="
+echo " 配置验证"
+echo "=========================================="
+docker exec $CONTAINER psql -U erp_pgsql -d junhong_cmp_test -c "
+SELECT name, setting, unit
+FROM pg_settings
+WHERE name IN (
+    'shared_buffers', 'effective_cache_size', 'work_mem',
+    'random_page_cost', 'effective_io_concurrency',
+    'max_parallel_workers_per_gather', 'maintenance_work_mem',
+    'max_connections', 'autovacuum_vacuum_scale_factor'
+)
+ORDER BY name;
+"
+
+echo ""
+echo "=========================================="
+echo " 部署完成"
+echo "=========================================="
+echo "  Port:     16289"
+echo "  Database: junhong_cmp_test"
+echo "  User:     erp_pgsql / erp_2025"
+echo ""