MicrometerInterceptorFactory

Micrometer Observation interceptor factory for Java handlers. Implements both and RunInterceptor.Factory so a single registration covers both invocation- and run-level observations.

Spans produced through the Micrometer → tracing bridge mirror those emitted by sdk-interceptor-opentelemetry: attempt <target> for the handler and run (<name>) for each ctx.run, with restate.invocation.id, restate.invocation.target, and restate.run.name attributes.

Observation scope is thread-local. Use with MicrometerRunContextPropagator (registered via SPI by default) to propagate spans to run closures.