Single source-of-truth memlog: append-only, chronological working-memory
log for skills. Installs to _bmad/scripts/memlog.py via the existing
src/scripts sync (beside resolve_customization.py), so any skill can call
it at runtime — bmad-spec is the first consumer.
Merges the neutral API (--workspace, free-form --type/--by, generic set)
with crash-safe fsync atomic writes. No lifecycle status by design: a
memory log records completion as an event entry, never a frontmatter flag.
Also accepts --path for callers that hold the file path directly. 30 tests.
Brian Madison