$ # baseline: /tmp/fuxbase, git worktree at a3f75b0, src/fux/embed/ present
OLD ingest (with model): 36.140661195 s
OLD index: 6,528,570 bytes, 720 records, 4290 chunk vectors
OLD ingest run2: 33.001948398 s

$ # treatment: /tmp/fuxwork, model and dense lane removed
NEW ingest wall: 4.978614212 s
NEW index: 5,052,388 bytes, 721 records, 0 chunk vectors
NEW ingest run2: 4.843515888 s

$ ls -l /tmp/wh_old/*.whl /tmp/wh_new/*.whl
   238208 bytes  /tmp/wh_new/fux_engine-2.0.0a1-py3-none-any.whl
  7170167 bytes  /tmp/wh_old/fux_engine-2.0.0a1-py3-none-any.whl

$ # direct count of the `vectors` key on the pre-deletion committed index
records            1304
chunks w/ vectors  8094
index bytes        12,162,978
vector bytes       2,794,170   (23.0 % of the committed index)

$ # differential law, WITH the non-empty guard
IDENTICAL n=5   differential law
IDENTICAL n=5   index format canonical
IDENTICAL n=5   how does enrichment work
IDENTICAL n=5   supersession ranking
IDENTICAL n=5   merge driver conflict
IDENTICAL n=5   bm25f field weights
fail=0

$ # the FIRST attempt, kept because it is the finding: a vacuous pass
IDENTICAL  scan==fast   differential law        <- both sides were ""
IDENTICAL  scan==fast   index format canonical  <- .fux/tune.toml still had
IDENTICAL  scan==fast   how does enrichment work   [dense]; every call errored
