selectjingweidu → selectCoordinates，与 Java 接口定义保持一致。

变量名:
- weather → faultData（消除误导性命名）
- jingdu/weidu → longitude/latitude（消除中文拼音）
- jingduValue/weiduValue → longitudeValue/latitudeValue
- tdEngineshuju → tdEngineData（消除中文拼音）
- companyid → companyId
- controllername → controllerName
- tablename → tableNames

方法名（camelCase 规范化）:
- selectall → selectAll
- insertfault → insertFault, updatefault → updateFault
- insertalarm → insertAlarm
- createmessage → createMessage
- selecttables → selectTables, inserttables → insertTables
- selectjingweidu → selectCoordinates（消除中文拼音）
- triggermethod → triggerMethod
- 等 40+ 个 mapper/service 方法名

类名:
- Sysrealtime → SysRealtime
- SysrealtimeMapper → SysRealtimeMapper
- SysrealtimeService → SysRealtimeService
- 所有引用同步更新

安全修复:
- MqttFaultConsumer: 修复 SSRF 漏洞，使用 UriComponentsBuilder + controllerId 白名单
- TdEngineService: 修复 SQL 注入，information_schema 查询改用 PreparedStatement
- TdEngineService: 收紧 ALLOWED_COLUMNS 正则，仅允许 ASCII 字母数字下划线
- TdEngineService: 修复静默数据丢失，超长字符串截断存储而非返回 NULL
- TdEngineAlarm: SQL 查询参数化，防止注入
- MqttFaultConsumer/MqttDynamicConsumer: topic/controllerId/dbName 白名单校验
- SysDeviceService: 添加表名校验

代码质量:
- 统一使用 Fastjson2 替代 Jackson ObjectMapper
- Domain 类字段全部改为 private（13 个类）
- topics.java 重命名为 Topics.java
- SimpleDateFormat 替换为线程安全的 DateTimeFormatter
- 提取魔法数字为常量（DEFAULT_BATCH_SIZE 等）
- SysWorkorderMapper.xml 修复 SQL 逻辑错误（AND/OR 括号）
- SysIndicatorsMapper.xml 修正字段名 createtime -> createdata
- SysControllerService 移除 Service 层 @Param 注解
- MqttGenericConsumer 提取过长方法
- NumericIdGenerator 支持 @Value 注入 workerId/dataCenterId
- 空 catch 块补充日志

日志级别优化:
- WARN 31 -> 9 (-71%)，数据校验/格式问题降级为 INFO
- INFO 28 -> 50 (+79%)，正常业务流使用 INFO
- ERROR 37 -> 33 (-11%)，仅最终失败使用 ERROR

Security:
- Remove hardcoded password fallbacks from application-druid.yml
- Add table name whitelist validation to SysFaultService & SysAlarmService
- Externalize VehicleSyncTask webhook URL to IotProperties config

Concurrency & Resource Management:
- Fix AbstractMqttConsumer reconnect/disconnect race (synchronized)
- Fix MqttClient resource leaks in disconnect() with separate try blocks
- Fix AbstractDynamicMqttConsumer broken-state MqttClient reuse
- Fix TDengineService stableColumnCache unbounded growth (MAX_CACHE_SIZE=1000)

Input Validation:
- Add null/empty checks to MqttGenericConsumer (controllerId, path, timestamp)
- Add null/empty checks to MqttFaultConsumer (controllerId, deviceId, type, desc)
- Guard against ArrayIndexOutOfBoundsException on topic path split

Tests:
- Update VehicleSyncTaskTest for new IotProperties constructor param
- All 79 tests pass, build succeeds

- Delete 6 legacy RuoYi modules (ruoyi-admin/framework/system/common/quartz/generator)
- Create new iot-platform Spring Boot 2.5.15 module with all IoT business
- Migrate 5 MQTT consumers, VehicleSyncTask, 14 services, 15 domains/mappers
- P0 security fixes:
  - Replace string-concat SQL with field whitelist + escapeValue in TDengineService, DynamicSqlProvider, TDegnineAlarm
  - Externalize hardcoded MQTT/TDengine credentials to application.yml via IotProperties
  - Fix thread-unsafe static shared Connection/Statement in TDegnineAlarm (use per-method connections)
- Logging normalization: replace 148 System.out/err.println with SLF4J, add logback-spring.xml (100MB rolling, 30d retention)
- Dead code cleanup: NumericIdGenerator (238→65 lines), merge TDengineConnecting into TDengineService
- Verified: mvn clean package passes, app boots with all 5 MQTT consumers

Security (P0):
- Remove hardcoded MySQL password from SysrealtimeService
- Add table name whitelist validation (regex + length limit)
- Validate ${tableName} in SysrealtimeMapper.xml
- Externalize all credentials to .env file
- Fix unbounded thread pools in MQTT consumers
- Fix mysqlWritePool leak in MqttFaultConsumer

Quality (P1):
- Extract AbstractMqttConsumer base class (-500+ duplicate lines)
- Refactor VehicleSyncTask: SCAN instead of KEYS, batch ops,
  RestTemplate timeout, loop-invariant extraction
- Add unit tests (RedisKeys, SysrealtimeService, MqttConsumer)

Architecture (P2):
- Add Spring Boot Actuator (/actuator/health)
- Create RedisKeys constants class for key namespace
- Add .env.example and start.sh for local development

Deployment:
- Add systemd service (iot-platform.service)
- Add deploy.sh with build, upload, backup, health check, rollback
- Add setup-server.sh for server initialization
- Add health-check.sh (Actuator + TCP port fallback)

Docs:
- Update CLAUDE.md for standalone iot-platform architecture
- Update README.md with build/deploy instructions
- Add deploy/README.md

- Delete 6 legacy RuoYi modules (ruoyi-admin/framework/system/common/quartz/generator)
- Create new iot-platform Spring Boot 2.5.15 module with all IoT business
- Migrate 5 MQTT consumers, VehicleSyncTask, 14 services, 15 domains/mappers
- P0 security fixes:
  - Replace string-concat SQL with field whitelist + escapeValue in TDengineService, DynamicSqlProvider, TDegnineAlarm
  - Externalize hardcoded MQTT/TDengine credentials to application.yml via IotProperties
  - Fix thread-unsafe static shared Connection/Statement in TDegnineAlarm (use per-method connections)
- Logging normalization: replace 148 System.out/err.println with SLF4J, add logback-spring.xml (100MB rolling, 30d retention)
- Dead code cleanup: NumericIdGenerator (238→65 lines), merge TDengineConnecting into TDengineService
- Verified: mvn clean package passes, app boots with all 5 MQTT consumers

- Delete 6 legacy RuoYi modules (ruoyi-admin/framework/system/common/quartz/generator)
- Create new iot-platform Spring Boot 2.5.15 module with all IoT business
- Migrate 5 MQTT consumers, VehicleSyncTask, 14 services, 15 domains/mappers
- P0 security fixes:
  - Replace string-concat SQL with field whitelist + escapeValue in TDengineService, DynamicSqlProvider, TDegnineAlarm
  - Externalize hardcoded MQTT/TDengine credentials to application.yml via IotProperties
  - Fix thread-unsafe static shared Connection/Statement in TDegnineAlarm (use per-method connections)
- Logging normalization: replace 148 System.out/err.println with SLF4J, add logback-spring.xml (100MB rolling, 30d retention)
- Dead code cleanup: NumericIdGenerator (238→65 lines), merge TDengineConnecting into TDengineService
- Verified: mvn clean package passes, app boots with all 5 MQTT consumers