Module constants 

Shared crate-wide constants for Switchyard.

Centralizes magic values and default labels used across modules. Adjusting these here will propagate through the crate.

Constants

DEFAULT_BACKUP_TAG

Default logical tag used for naming backup artifacts and sidecar files. Example filenames: .<name>.<tag>.<millis>.bak and .<name>.<tag>.<millis>.bak.meta.json.

DEFAULT_LOCK_TIMEOUT_MS

Default lock timeout used by Switchyard::new() unless overridden by with_lock_timeout_ms().

FSYNC_WARN_MS

Threshold in milliseconds above which an fsync duration is annotated with a WARN severity in Audit v2. See api/apply.rs.

LOCK_POLL_MS

Poll interval in milliseconds for the file-backed lock manager (see adapters/lock_file.rs).

NS_TAG

UUIDv5 namespace tag for deterministic plan/action IDs. Derived from SPEC Reproducible v1.1 guidance; see SPEC/SPEC.md § Determinism.

RESCUE_MIN_COUNT

RESCUE_MUST_HAVE

Heuristic for rescue tool availability when BusyBox is not present. At least RESCUE_MIN_COUNT of the RESCUE_MUST_HAVE tools must be found on PATH.

TMP_SUFFIX

Temporary filename suffix used for atomic symlink swap staging within a directory. The temporary name is constructed as .{{fname}}{TMP_SUFFIX}; e.g., .ls.switchyard.tmp.