swarm-controller: move OTEL deps to workspace level, drop jobq_metrics singleton

hive-metric/Cargo.toml

@@ -11,9 +11,8 @@ path = "src/main.rs"
 [dependencies]
 anyhow.workspace = true
 clap.workspace = true
-# OTEL SDK — only used by this crate, so kept local rather than in workspace.dependencies.
-opentelemetry = "0.32"
-opentelemetry_sdk = { version = "0.32", features = ["metrics"] }
+# OTEL SDK, from the workspace base — see the root Cargo.toml's comment for
+# the blocking-client rationale shared by every OTEL-pushing crate.
 # Blocking (not async) reqwest client on purpose: the metrics SDK drives the
 # OTLP push from a `PeriodicReader` background thread that has no Tokio runtime,
 # so the async client panics there with "no reactor running". The blocking
@@ -21,9 +20,6 @@ opentelemetry_sdk = { version = "0.32", features = ["metrics"] }
 # records one point then `shutdown()`s, a synchronous send is exactly right.
 # No `internal-logs` here, unlike hive-c0re: this binary installs no tracing
 # subscriber, so the SDK's diagnostics would have nowhere to go.
-opentelemetry-otlp = { version = "0.32", default-features = false, features = [
-  "metrics",
-  "http-json",
-  "reqwest-blocking-client",
-  "reqwest-rustls",
-] }
+opentelemetry.workspace = true
+opentelemetry_sdk.workspace = true
+opentelemetry-otlp.workspace = true