Periods in filenames are avoidable and the Prefect UI dislikes them in
run names. Uses a shared sci_notation helper in main.py mirrored in the
flow. Stem regex (main + parser) now matches J<digits.Ee+-> to accept
both old decimal-J and new sci-J filenames so the two transition
together. J tag in Prefect tag list also uses the sci form, so chip
filters stay consistent.
Backfill script extended to find pre-transition (decimal-J) files on
disk via a second base-stem variant, then rename them to the sci form.
backfill_tags re-patches existing runs so their J tag matches the new
canonical form.
All 13 existing figs + runs renamed / retagged in-place.
Stem grows an 8-hex sha1 digest of the (keys-sorted) embed_args dict, so
runs differing only in embed_args (e.g. UMAP n_neighbors=5 vs 15) now
produce distinct figs. The stem regex and parser both accept an optional
_<hash> tail so pre-hash figs still render in the runs list and compare
page; legacy filename is resolved on disk fallback.
Duplicate-submission check now rejects against BOTH the hashed and the
legacy hashless variant so users can't accidentally duplicate an old run
either.
Flow additionally writes a <stem>.frames.json sidecar next to the plotly
HTML (same shape as app/web/plotly_parse returns). Server prefers the
sidecar when present; falls back to parsing HTML for older runs. Sidecar
emission is non-critical — any failure just logs and keeps going.
