Wraps the assign_file scoring core (cluster.jl) in the live catalog the
design's phase B calls for (DESIGN §5B/§9):
- src/catalog.jl: Catalog durable state (frozen-id clusters + sufficient
stats + processed set + examples); sparse, sidecar-first durable
save/load; incremental catalog_sweep! (deterministic CRP-predictive
assignment of new binary/ files); offline compact! that seeds on first
run and recompacts later; write_nominations! emitting one JSON per
promotable cluster with a hex magic template.
- bin/cluster_sweep.jl: cron/periodic single-owner runner (--compact
forces a recluster; first run auto-compacts to seed).
- config.jl: cluster_catalog_path + nominated_dir knobs (FS_CLUSTER_CATALOG,
FS_NOMINATED_DIR), wired into config_from_env and ensure_dirs.
- Tests: durable round-trip, incremental sweep growth + idempotency,
§10.1 nothing-from-noise end-to-end (zero promotions), a recurring
format self-nominating, seed-then-live-assign (165 pass).
- DESIGN_clustering.md: mark phase B built.