feat(line): 智电改造线路台账接入 ICC 消防探测器真实同步

- 重建 electric_line 表结构（迁移20261024_icc_line_rebuild.sql并同步db_init/db_seed）：删building_id/floor_no/location/icc_device_code占位字段，equip_id改可空，新增imei/gateway_id/type_code/type_name/fire_system_code/fire_system_name/part_unit_loop_code/channel_no/channel_sn/produce_date，gateway_id外键→electric_gateway
- 同步服务IccLineSyncService复用OAuth2真实鉴权分页拉取探测器（POST /detector/subsystem/page，pageSize=50短页停止），按line_code(detectorCode)幂等upsert写icc_sync_log；customer_id由orgCode→customer.icc_code解析、gateway_id由parentCode→electric_gateway.device_code匹配、equip_id同步不填充
- 列表接口返回gateway/type/imei等新字段，keyword检索含imei；前端台账页更新为新列（IMEI/所属网关/探测器类型/回路通道/消防系统/生产日期），保留手动同步按钮与筛选
- 更新系统设计文档electric_line表定义与spec（add-icc-line-sync）

database/migrations/20261024_icc_line_rebuild.sql

@@ -0,0 +1,48 @@
+-- 智电改造线路台账真实 ICC 同步：重建 electric_line 表结构（按 ICC DetectorVO）
+-- 1) 增列/删列/改可空（幂等）；2) gateway_id 外键 → electric_gateway；3) 索引与注释同步
+BEGIN;
+
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS imei                VARCHAR(64);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS gateway_id          BIGINT;
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS type_code           VARCHAR(32);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS type_name           VARCHAR(64);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS fire_system_code    VARCHAR(64);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS fire_system_name    VARCHAR(128);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS part_unit_loop_code VARCHAR(64);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS channel_no          VARCHAR(64);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS channel_sn          VARCHAR(64);
+ALTER TABLE electric_line ADD COLUMN IF NOT EXISTS produce_date        VARCHAR(16);
+
+ALTER TABLE electric_line DROP COLUMN IF EXISTS icc_device_code;
+ALTER TABLE electric_line DROP COLUMN IF EXISTS building_id;
+ALTER TABLE electric_line DROP COLUMN IF EXISTS floor_no;
+ALTER TABLE electric_line DROP COLUMN IF EXISTS location;
+
+ALTER TABLE electric_line ALTER COLUMN equip_id DROP NOT NULL;
+
+ALTER TABLE electric_line ADD CONSTRAINT fk_line_gateway FOREIGN KEY (gateway_id) REFERENCES electric_gateway(id);
+
+DROP INDEX IF EXISTS idx_line_icc;
+CREATE INDEX IF NOT EXISTS idx_line_gateway ON electric_line (gateway_id);
+CREATE INDEX IF NOT EXISTS idx_line_imei     ON electric_line (imei);
+
+COMMENT ON TABLE  electric_line IS '智电改造线路信息表（ICC 探测器同步）';
+COMMENT ON COLUMN electric_line.line_code           IS '探测器编码（ICC detectorCode，唯一幂等键）';
+COMMENT ON COLUMN electric_line.line_name           IS '探测器名称（ICC detectorName）';
+COMMENT ON COLUMN electric_line.imei                IS '设备唯一标识码（ICC imei）';
+COMMENT ON COLUMN electric_line.equip_id            IS '客户设备 ID（→ customer_equipment，可空，同步不填充）';
+COMMENT ON COLUMN electric_line.gateway_id          IS '网关设备 ID（→ electric_gateway，由 parentCode↔device_code 匹配）';
+COMMENT ON COLUMN electric_line.customer_id         IS '客户 ID（orgCode→customer.icc_code 解析，逻辑隔离键）';
+COMMENT ON COLUMN electric_line.type_code           IS '探测器类型编码';
+COMMENT ON COLUMN electric_line.type_name           IS '探测器类型名称';
+COMMENT ON COLUMN electric_line.fire_system_code    IS '消防系统编码';
+COMMENT ON COLUMN electric_line.fire_system_name    IS '消防系统名称';
+COMMENT ON COLUMN electric_line.part_unit_loop_code IS '探测器回路号';
+COMMENT ON COLUMN electric_line.channel_no          IS '探测器通道号';
+COMMENT ON COLUMN electric_line.channel_sn          IS '通道唯一标识码';
+COMMENT ON COLUMN electric_line.produce_date        IS '生产日期（yyyy-MM-dd）';
+COMMENT ON COLUMN electric_line.status              IS '探测器状态：1在线 0离线（detectorStatus 01→1 / 02→0）';
+COMMENT ON COLUMN electric_line.synced_at           IS 'ICC 同步时间';
+COMMENT ON COLUMN electric_line.created_at          IS '创建时间';
+
+COMMIT;