fix(config): fail fast on invalid operation-day zone

运营日时区只认 PARAM:msgx.operation-day.zone：JobRunner、HistorySweepJob、JdbcSnapshotLogRepository.purgeBefore 改走注入的 OperationDayProps；ScheduleProcessor/AdftProcessor 删除「非法值回退字面量」；新增 @Context 启动自检 OperationDayZoneCheck，配置错位在启动时暴露。

验证：./gradlew test 126 tests / 0 fail（新增 OperationDayPropsTest 覆盖合法解析与非法即失败）。

src/main/kotlin/com/gzzn/omms/msgexchange/jobs/JobRunner.kt

@@ -1,5 +1,6 @@
 package com.gzzn.omms.msgexchange.jobs
 
+import com.gzzn.omms.msgexchange.config.OperationDayProps
 import com.gzzn.omms.msgexchange.processing.BackfillService
 import jakarta.inject.Singleton
 import java.time.Clock
@@ -22,9 +23,10 @@ class JobRunner(
     private val backfill: BackfillService,
     private val historySweep: HistorySweepJob,
     private val clock: Clock,
+    operationDayProps: OperationDayProps,
 ) {
     private val log = org.slf4j.LoggerFactory.getLogger(JobRunner::class.java)
-    private val zone: ZoneId = ZoneId.of("Asia/Shanghai")
+    private val zone: ZoneId = operationDayProps.zoneId()
 
     @Volatile
     private var running = true