fix(notify): unify runtime lifecycle coordination (#5088)

* fix(notify): unify runtime lifecycle coordination

* fix(notify): repair lifecycle convergence checks

* fix(admin): expose effective notify state (#5097)

Cargo.lock

@@ -9537,8 +9537,10 @@ dependencies = [
  "serde",
  "serde_json",
  "starshard",
+ "tempfile",
  "thiserror 2.0.19",
  "tokio",
+ "tokio-util",
  "tracing",
  "tracing-subscriber",
  "url",
@@ -9955,6 +9957,7 @@ dependencies = [
  "chrono",
  "criterion",
  "deadpool-postgres",
+ "futures-util",
  "hashbrown 0.17.1",
  "hyper",
  "hyper-rustls",
@@ -9964,6 +9967,7 @@ dependencies = [
  "mysql_async",
  "parking_lot",
  "pulsar",
+ "rayon",
  "rcgen",
  "redis",
  "regex",
@@ -9988,6 +9992,7 @@ dependencies = [
  "tokio",
  "tokio-postgres",
  "tokio-postgres-rustls",
+ "tokio-util",
  "tracing",
  "tracing-subscriber",
  "url",