# Phase 5 — Optional seed data + test fixtures

Emit `db/seed.sql` with deterministic, safe-to-re-run seed rows, OR skip
this phase entirely. Single `AskUserQuestion` to decide.

## 5a — Seed decision (AskUserQuestion)

```json
{
  "questions": [
    {
      "question": "Seed data for dev / tests?",
      "header": "Seed",
      "multiSelect": false,
      "options": [
        {"label": "Smoke fixture (1 row per entity)", "description": "Minimal — proves schema loads and FKs resolve. Recommended default."},
        {"label": "Rich dev seed (5–20 rows per entity)", "description": "Realistic playground for local dev; deterministic IDs from a fixed seed"},
        {"label": "Test fixtures only (for integration tests)", "description": "Small, labelled datasets keyed by test-case name"},
        {"label": "Skip — no seed data", "description": "Schema-only delivery; tests will use mocks or runtime factories"}
      ]
    }
  ]
}
```

Store as `SEED`.

## 5b — Generate `db/seed.sql` (inline, no AskUserQuestion)

Rules, regardless of choice (unless Skip):

- **Idempotent** — every `INSERT` uses `ON CONFLICT DO NOTHING` (PG/MySQL)
  or `INSERT OR IGNORE` (SQLite). Re-running seed is safe.
- **Deterministic PKs** — use explicit IDs (`1`, `2`, ...) not relying on
  sequences. For UUIDs, use fixed values from a documented seed (e.g.
  `uuid_generate_v5(...)` or hard-coded dev-only UUIDs).
- **No secrets** — no real emails (use `user1@example.test`), no real
  phone numbers, no real names. RULE 0.8 still applies: nothing in seed
  should be or look like a production token.
- **Respect FK order** — insert parents before children, junctions last.
- **One file** — `db/seed.sql`. Not split per entity (ordering matters).

Smoke-fixture shape:

```sql
-- Generated by /schema-design Phase 5 — <YYYY-MM-DD>
-- Smoke fixture: one row per entity, deterministic IDs.

INSERT INTO users (id, email, name) VALUES (1, 'user1@example.test', 'Seed User')
  ON CONFLICT (id) DO NOTHING;
INSERT INTO organizations (id, name) VALUES (1, 'Seed Org')
  ON CONFLICT (id) DO NOTHING;
INSERT INTO organization_users (user_id, organization_id, role)
  VALUES (1, 1, 'owner') ON CONFLICT DO NOTHING;
```

For "Rich dev seed" — use counted loops in SQL (PG: `generate_series`;
SQLite: recursive CTE; MySQL: `WITH RECURSIVE`) to produce 5–20 rows per
non-junction entity, with FK references wrapping modulo the parent count.

For "Test fixtures" — group by test name via SQL comments:

```sql
-- fixture: test_user_signup
INSERT INTO users (id, email, name) VALUES (101, 'signup@example.test', 'Signup') ...
-- fixture: test_org_invite
INSERT INTO users (id, email, name) VALUES (201, 'invitee@example.test', 'Invitee') ...
```

## 5c — Test-First hook (inline)

If `SEED ≠ Skip`, emit a smoke-test snippet tailored to `DB`:

```bash
# Smoke-test: load schema + seed, assert row counts.
kei-migrate --database-url "$DATABASE_URL" --dir migrations up
psql "$DATABASE_URL" -f db/seed.sql         # or: sqlite3 <file> < db/seed.sql
psql "$DATABASE_URL" -c "SELECT count(*) FROM users;"
```

Remind the user: this is a smoke test, not a Test-First contract. Real
integration tests live in the project's test suite — see
`_blocks/rule-test-first.md`.

## Verify-criterion

- If `SEED = Skip`: `db/seed.sql` is NOT created; state records "seed
  skipped".
- Otherwise: `db/seed.sql` exists, is idempotent, respects FK order, and
  uses `@example.test` (or equivalent RFC 2606 reserved) emails only.
- Smoke-test snippet printed inline in chat (once).
- Final report can now be emitted (see `SKILL.md` index).
