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.
Before dispatching to Prefect, check if figs/<stem>.html already exists.
If so, return 409 with a message asking to bump seed/jitter/N/T or delete
the fig. Stem is derived from (generator, embedder, N, T, J, seed), so
embed_args-only changes still collide and are blocked — users must vary
a stem-shaping param to get a distinct output file.
When two runs share identical params they write to the same figs/<stem>.html,
and the most recent overwrites the earlier. Previously both got a compare
checkbox with the same data-stem, so toggling one toggled both via the JS
Set. Now we flag older duplicates server-side (first occurrence wins — Prefect
returns runs START_TIME_DESC), drop their checkbox, fade the row, and mark
'overwritten' on the outputs line.
Server enrichment regenerates the dataset deterministically (random_state=0,
matching the flow's _DEFAULT_GENERATOR_KWARGS — the stem's seed drives jitter,
not generation) and attaches per-point labels + label_kind to frames.json.
Client picks the dataset-picker's scheme: continuous ramp for s_curve/swiss_roll,
8-color categorical palette for blobs/gaussian_quantiles/classification. Jitter-
added points (id >= num_points) render black. Rainbow material is opaque with
alpha cutoff so overlapping points don't blend to the ramp midpoint.
Swiss_roll and swiss_roll_hole collide on generator_path; the plain variant
wins for now (kwargs aren't preserved through the flow's metrics.json).
Bumped Cache-Control on the frames endpoint so browsers don't cache stale
pre-enrichment payloads.
- per-run checkbox when embedding HTML exists; cap at 2 selected
- sticky 'compare selected' button opens /compare?a=&b= in new tab
- selection state persists across the 3s htmx poll via a Set keyed by stem
- /compare stub validates stems, renders scaffolding (three.js UI next)
Client-side: disable the form submit button until the picker writes a
dataset_id. Server-side: reject posts where dataset_id is present but
empty, instead of silently defaulting to make_s_curve.
