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/test/kotlin/com/gzzn/omms/msgexchange/config/OperationDayPropsTest.kt

@@ -0,0 +1,31 @@
+package com.gzzn.omms.msgexchange.config
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertThrows
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Test
+import java.time.ZoneId
+
+/**
+ * 运营日时区只有一个出处（`PARAM:msgx.operation-day.zone`）：能解析就解析，
+ * 解析不了必须让启动失败，**不允许回退到代码字面量**——回退会把配置错位藏起来，
+ * 让运营日按错误的时区计算。
+ */
+class OperationDayPropsTest {
+
+    @Test
+    fun `configured zone resolves to the IANA zone`() {
+        val props = OperationDayProps().apply { zone = "Asia/Shanghai" }
+
+        assertEquals(ZoneId.of("Asia/Shanghai"), props.zoneId())
+    }
+
+    @Test
+    fun `invalid zone fails fast instead of falling back to a literal`() {
+        val props = OperationDayProps().apply { zone = "Not/AZone" }
+
+        val failure = assertThrows(IllegalStateException::class.java) { props.zoneId() }
+
+        assertTrue(failure.message!!.contains("msgx.operation-day.zone"))
+    }
+}

src/test/kotlin/com/gzzn/omms/msgexchange/jobs/HistorySweepJobTest.kt

@@ -1,6 +1,7 @@
 package com.gzzn.omms.msgexchange.jobs
 
 import com.gzzn.omms.msgexchange.config.HistoryProps
+import com.gzzn.omms.msgexchange.config.OperationDayProps
 import com.gzzn.omms.msgexchange.domain.EventType
 import com.gzzn.omms.msgexchange.domain.flight.FlightState
 import com.gzzn.omms.msgexchange.domain.flight.HistoryCandidate
@@ -50,7 +51,7 @@ class HistorySweepJobTest {
     fun `history store not connected must delete zero rows`() {
         val f = seededFlight("F1", deleted = true, idleDays = 30)
         val events = StubMsgEvents()
-        val job = HistorySweepJob(f, events, HistoryProps().apply { historyStoreEnabled = false })
+        val job = HistorySweepJob(f, events, HistoryProps().apply { historyStoreEnabled = false }, OperationDayProps())
 
         val outcome = job.run(now)
 
@@ -71,7 +72,7 @@ class HistorySweepJobTest {
         val events = StubMsgEvents()
         val store = RecordingHistoryStore().apply { confirmed.add("F1") }   // 只有 F1 归档确认成功
         val job = HistorySweepJob(
-            f, events, HistoryProps().apply { historyStoreEnabled = true }, historyStore = store,
+            f, events, HistoryProps().apply { historyStoreEnabled = true }, OperationDayProps(), historyStore = store,
         )
 
         val outcome = job.run(now)
@@ -90,7 +91,7 @@ class HistorySweepJobTest {
         val events = StubMsgEvents()
         val store = RecordingHistoryStore()
         val job = HistorySweepJob(
-            f, events, HistoryProps().apply { historyStoreEnabled = true }, historyStore = store,
+            f, events, HistoryProps().apply { historyStoreEnabled = true }, OperationDayProps(), historyStore = store,
         )
 
         job.run(now)
@@ -108,7 +109,7 @@ class HistorySweepJobTest {
         var cutoff: Instant? = null
         val purge = com.gzzn.omms.msgexchange.infra.persistence.SnapshotLogPurge { instant -> cutoff = instant; 7 }
         val job = HistorySweepJob(
-            f, StubMsgEvents(), HistoryProps().apply { historyStoreEnabled = false }, snapLogPurge = purge,
+            f, StubMsgEvents(), HistoryProps().apply { historyStoreEnabled = false }, OperationDayProps(), snapLogPurge = purge,
         )
 
         val outcome = job.run(now)