docs: ADR-0048 Phase 1 accepted/implemented + handoff 65

- ADR-0048 status -> Accepted; Phase 1 implemented (commits
  202e25a..fbd219b), with the pre-build and post-implementation /runda
  passes and the 2358-test green state recorded; index entry updated.
- requirements.md: SD1 [x] (whole-row seed + FK/junction, both modes,
  --seed reproducibility with no exceptions), SD2 [/] (core generators /
  determinism done; the set override clause + column-fill are Phase 2),
  A1 14/15 (only hint/H2 remains unregistered).
- Handoff 65: the full seed Phase-1 build, the two /runda passes, where
  the code lives, and Phase-2 / next steps.

docs/requirements.md

@@ -246,13 +246,12 @@ since ADR-0027.)
   available in both modes: `save`, `save as`, `load`, `new`,
   `rebuild`, `export`, `import`, `seed`, `replay`, `undo`,
   `redo`, `mode`, `help`, `hint`, `quit`.
-  *(Partial, verified 2026-06-07: 13 of 15 implemented and
-  available in both modes — `quit`/`q`, `mode simple|advanced`,
-  `help`, `save`, `save as`, `load`, `new`, `rebuild`, `export`,
-  `import`, `replay`, `undo`, `redo` (REGISTRY in
-  `grammar/app.rs:249-333`). **Missing: `seed`** (tracked as SD1)
-  **and `hint`** (tracked as H2) — neither is registered. A1
-  closes when SD1 + H2 land.)*
+  *(Partial: **14 of 15** implemented and available in both modes —
+  `quit`/`q`, `mode simple|advanced`, `help`, `save`, `save as`,
+  `load`, `new`, `rebuild`, `export`, `import`, `replay`, `undo`,
+  `redo`, and now **`seed`** (ADR-0048 / SD1, done 2026-06-11).
+  **Only `hint`** (tracked as H2) remains unregistered. A1 closes
+  when H2 lands.)*
 
 ## DSL data commands
 
@@ -665,20 +664,35 @@ since ADR-0027.)
 
 ## Sample data / seeding
 
-- [ ] **SD1** `seed <table> [count]` generates plausible fake
+- [x] **SD1** `seed <table> [count]` generates plausible fake
   data; junction tables are seeded with valid foreign-key
   references drawn from existing parent rows.
-  *(Taken up 2026-06-11 — specified by **ADR-0048**; phased
-  test-first implementation in progress.)*
-- [ ] **SD2** Detailed seeding rules (per-type generators,
+  *(Done 2026-06-11 via **ADR-0048** (commits `202e25a`→`fbd219b`).
+  Whole-row `seed <table> [count] [--seed <n>]` with realistic
+  name-aware generation (`fake` crate + a type-gated heuristic
+  catalogue, table-context name disambiguation, hand-rolled
+  `product` generator, bounded dates), identifier + constraint
+  uniqueness, **junction tables seeded with valid FK references
+  drawn from existing parent rows** (distinct combinations, capped;
+  empty-parent friendly error), `IN`-CHECK derivation, a
+  required-column block guard, undo as one step, replay as a data
+  write, a capped auto-show + enum/CHECK advisory, and an O(N)
+  single-transaction path. 25 integration + ~40 unit tests; two
+  `/runda` passes. The `set` override clause and `<table>.<column>`
+  column-fill are SD2 Phase-2, deferred.)*
+- [/] **SD2** Detailed seeding rules (per-type generators,
   locale, determinism, override hooks).
-  *(Taken up 2026-06-11 — `[~]`→`[ ]`. **ADR-0048** settles the
-  design: type-gated name-aware generators with a `fake`-backed
-  catalogue + table-context disambiguation, `--seed` determinism,
-  English-only locale (X2), and a `set` override clause (the
-  "override hooks" core). Deferred to future SD2 increments:
-  user-defined custom generators, NULL injection, multi-locale,
-  recursive parent auto-seed.)*
+  *(Core done 2026-06-11 via **ADR-0048**: type-gated name-aware
+  per-type generators with a `fake`-backed catalogue +
+  table-context disambiguation, **`--seed` determinism**
+  (serial/FK/shortid all reproducible — D4 holds with no
+  exceptions), English-only locale (X2). **Still open (Phase 2):**
+  the `set` override clause — value / pick-from-list / explicit
+  generator / range (the "override hooks" core, designed in
+  ADR-0048 D2 but not yet built) and the `<table>.<column>`
+  column-fill form. Deferred SD2 increments: user-defined custom
+  generators, NULL injection, multi-locale, recursive parent
+  auto-seed.)*
 
 ## Query analysis