chore: keep the fixture generator scripts and the replay-sample bot

scripts/fixtures/ holds the scripts that produced the 2026-11-11
fixtures, with a README on running them safely into a copy. Run in
order they reproduce the content of every fixture they touch.

Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com>

docs/superpowers/notes/2026-10-29-build-log.md

@@ -137,3 +137,4 @@ Owner approved eleven extensions; spec: `docs/superpowers/specs/2026-11-11-cours
 - Specs: `specs/2026-11-11-audit-pass.md` (written after the fact) and `specs/2026-11-11-course-extensions.md` (twelve items, marked as built).
 - Committed on branch `audit-and-extensions` (`edd57f0`), merged into `main` (`c67d81b`) and pushed to origin on the owner's instruction.
 - `docs/HANDOFF.md` is the starting point for the next maintainer; `notes/2026-11-11-session-log.md` records the day.
+- The fixture generator scripts and the replay-sample bot, first treated as throwaway, were saved to `scripts/fixtures/` with a README. Run in order into a copy of the fixtures they reproduce every file's content (checked 2026-11-11; `m13-life-update.json` differs in formatting only).