- Drop first_seen_user_id; sample is anonymous by construction
- Rename sample_dummy → sample_row, store the upload's first real data
row verbatim (one row, no totals, no other positions, no link to a
user). Narrow, deliberate exception to the "no holdings persisted"
invariant — gives the operator material for hand-writing future
native parsers.
- Drop the cache self-heal behaviour; operator owns eviction. Reinforce
the non-goal of auto-promoting learned formats to code.
Giorgio Gilestro
0254515989