P1.4 — user-visible surface:
- Grammar: `seed <table> [count] [--seed <n>]` (the first DSL flag with a
value); build_seed disambiguates the seed value from the positional count.
- Verified the auto-wired surface: table-name completion, --seed offered as
a candidate, validity consistent with `show data`, an ADR-0042 near-miss
row for bare `seed`, and render tests for the seed outcome.
/runda hardening — eight DA findings, all resolved:
- FK sampling now uses ORDER BY so --seed reproducibility no longer relies
on SQLite's unspecified DISTINCT order (D4).
- shortid columns now generate from seed's seeded RNG (new
shortid::generate_with_rng) — D4 now holds with no exceptions.
- Added the missing coverage the DA flagged: undo-one-step (D15), replay
re-runs a seed line (D16), advanced-mode (D5), atomic rollback on a
constraint failure, seed 0 no-op, complex-CHECK advisory (D17), and
FK + shortid reproducibility.
2358 pass / 0 fail / 0 skip, clippy all-targets clean.
claude@clouddev1
fbd219b631