v1.3.8

Features Added

• Add support for agent identity propagation for compiled agents in nested graph
  (#245)
• Add samples and documentation for LangChain special scenarios, including Foundry Responses API and nested graphs
  (#249)
• Expose A365 offline storage options: a365_exporter_disable_offline_storage (default False)
  and a365_exporter_storage_directory (default None) on use_microsoft_opentelemetry,
  Agent365ExporterOptions, and create_a365_components.
  When a365_enable_observability_exporter=True, the exporter provides at-least-once delivery
  by persisting failed payloads to disk (up to 2 days / 50 MB) and replaying them on recovery.
  Set a365_exporter_disable_offline_storage=True to opt out.
  Stored payloads are unencrypted; restrict the storage path to the service account, especially
  when enable_sensitive_data=True (payloads may contain prompts or completions).
  Replay reconstructs the current HTTPS export endpoint and bearer token at send time rather
  than reusing a stale URL, permanently-rejected or malformed ("poison") records are discarded
  instead of retried forever, and shutdown() is drain-safe: it waits for any in-flight replay
  send to finish before closing the durable store and HTTP session (parity with .NET PR #137).
  (#248)

Other Changes

• Contribute Microsoft distro profile information (component="mot" and distro version) to the OneSettings control plane during use_microsoft_opentelemetry().
  (#244)
• Pin GitHub Actions to full-length commit SHAs
  (#246)
• Apply formatting fixes across source and test files
  (#241)