S13 - already fixed at T1.6; the records said otherwise, now corrected

The housekeeping list carried S13 ('seed_demo.py does not sign in') from
completion.md and CLAUDE.md. It is not true and has not been since wave 1:
T1.6 (357712e) rewired seed_demo.py onto smoketest's opener - one cookie jar,
one login flow - and the file's own docstring says so. What actually happened:
the wave-1 exit checkbox was never ticked, and every later document inherited
the unticked box as fact.

Verified live before correcting anything, per the working rules: against a
throwaway server, seed_demo.py signs in as an admin, seeds the DEMO project
(7+ packages visible via the API), and --clean removes it, exit 0 both ways.

Corrected: the wave-1 exit box (ticked, with the reason), completion.md's S13
row (open -> built at T1.6, records error named), and CLAUDE.md's
verification step 4, which taught every future session the stale claim.

Item: S13 (closed as already-built; records corrected).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/reference/completion.md

@@ -40,7 +40,7 @@ name the probe that re-checks the item on every run.
 | S6 | built | T9.3 (`icon_check` 5) | one monochrome system, mapped in `tokens.md` |
 | S7 | built | T9.4 (`sample_check` 10) | one affordance, confirmed, fenced — verified against a real project |
 | S8 | built | T9.5 (`helptip_check` 13) | 20 badges → buttons; **closed BL-001** |
-| S13 | open | — | `seed_demo.py` still does not sign in; the smoke test does. Carried to the next revision |
+| S13 | built | T1.6 (re-verified 2026-08-20) | this row said "open / does not sign in" until Aug 20 - a records error: T1.6 fixed it in wave 1 (it reuses smoketest's login) and the wave-1 exit box was simply never ticked. Verified live: sign-in, seed, `--clean` |
 | A1 | preserved | T7.3 | `confirmEarlyRelease()` by name; async now, same contract |
 | A2 | built | T7.4 (`warning_check` 17) | one warning; the count on the sticky rail |
 | A3–A5, A7 | built | waves 1–6 | localization re-verified through T7.10's admin edits (`cards_check`) |
@@ -105,7 +105,6 @@ name the probe that re-checks the item on every run.
   aggregated, placement needs Nick.
 - **BL-024** — 21 native dialogs on admin/users/launcher; the T7.9 kit is
   ready for them.
-- **S13** — `seed_demo.py` sign-in.
 - Product questions raised in commit messages, awaiting answers: hold
   reachable from Draft/Scheduled (T7.3); CR-014 email body content (T7.6);
   merged-PDF export (T9.1).