You'll notice
Saving or deleting config now retries with backoff when the lock is held instead of failing outright.
Saving or deleting global and project config (saveGlobalConfig, saveCurrentProjectConfig, deleteProjectConfig, deleteCurrentProjectConfigFields) now retries lock acquisition with exponential backoff when the config lock is already held, instead of failing outright. Fallback writes skipped or suppressed due to lock contention are now tracked with distinct telemetry, including tengu_config_fallback_skipped_contention.