do_seed now enforces value uniqueness and derives enum values:
- Uniqueness groups (D10): the user-fillable PK, compound UNIQUE
constraints, and single-column UNIQUE / identifier columns stay
distinct across the batch and against existing rows (retry per row).
Junction distinct-combos fall out of PK-tuple uniqueness and cap at
the available parent combinations (logged when capped; the
user-facing note arrives with the advisory in P1.3c).
- Identifier-int columns get a monotonic sequence past MAX(col) (D10),
so they never collide.
- IN-CHECK derivation (D17): a simple `col IN ('a','b')` CHECK becomes
the value source via the new, unit-tested seed::parse_in_check_values,
so the enum-as-CHECK pattern just works.
8 parser unit tests + 4 integration tests (unique column, identifier
sequencing, junction cap, IN-check enum). 2343 pass / 0 fail / 0 skip,
clippy all-targets clean.
Deferred to P1.3c: dedicated SeedResult + capped preview (D18) + the
enum/CHECK advisory incl. the cap note (D12/D13); P1.3d: multi-row path.
do_seed fills foreign-key columns by sampling existing parent rows
(D14): sample_parent_key_tuples reads distinct parent keys, and a
compound FK reads all its child columns from one sampled parent row per
child row. An empty parent is refused with a friendly "seed the parent
first" error. The block guard (D1) refuses a NOT NULL blob column (seed
can't generate one); a nullable blob is omitted (-> NULL).
4 integration tests (valid FK references, empty-parent refusal, NOT NULL
blob refusal, nullable-blob omission). 2331 pass / 0 fail / 0 skip,
clippy all-targets clean.
Deferred to P1.3b: identifier/constraint uniqueness incl. junction
distinct-combos (D10), IN-CHECK derivation (D17), dedicated SeedResult +
capped preview (D18) + advisory (D12/D13), and the multi-row path.
claude@clouddev1