feat(jobs): expose last job failure time

JobActivity 记录最近失败时刻并进入快照；JobRunner 失败时上报该时刻；新增指标 msgx.pipeline.job.last_failure_age_seconds 与健康明细 lastFailureAgeSeconds（对齐 reference 作业健康口径）。验证：./gradlew test 145 tests / 0 fail / 0 skipped。
2026-09-12 20:56:41 +08:00
parent 8a380c7646
commit 267eb20219
6 changed files with 22 additions and 6 deletions
@@ -45,6 +45,7 @@ internal fun jobRunnerHealth(snapshot: JobActivity.Snapshot, now: Instant): Heal
                "started" to snapshot.started,
                "lastTickAgeSeconds" to (ageSeconds ?: -1L),
                "lastTickDurationMs" to snapshot.lastTickMillis,
+                "lastFailureAgeSeconds" to (snapshot.lastFailureAt?.let { Duration.between(it, now).seconds } ?: -1L),
                "ticks" to snapshot.ticks,
                "failures" to snapshot.failures,
                "lastSweepSelected" to snapshot.lastSweepSelected,