docs: archive the finished backlogs (RD-30)

Two backlog trees are complete: `docs/project/backlog/` (75 files, every
WP done) and `docs/project/refactor-backlog-setup/` (the arc before it).
Move both under `docs/project/archive/` with `git mv`, so history stays
intact through `git log --follow`. `SHOWCASE-ROADMAP.md` moves with them,
because it points at the now-archived backlog README.

Add `docs/project/archive/README.md`. It states that these trees are
historical and names the two directories that are still live.

Repoint every inbound reference named in RD-30's Files table: CLAUDE.md,
the root README, both backend READMEs, `LetterHtml.cs`, `a11y.mdx`, the
`document-feature` and `new-ssp` skills, and the readable-codebase PLAN,
README, and RD-19 ticket. Fix two upward-relative links inside the moved
WP files (WP-68, WP-69) that gained a directory level and would otherwise
break. Repoint `.prettierignore`'s two agent-prompt exclusions to their
new path, so prettier keeps leaving those files' exact wording alone.

Mark RD-30 done and check off its acceptance criteria; flip its README
row to done.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
eho
2026-09-08 23:00:38 +02:00
co-authored by Claude Opus 5
parent 097e8468e0
commit 12f17d9d73
161 changed files with 154 additions and 24 deletions
@@ -33,10 +33,10 @@ Strip the reference, keep the sentence. No behaviour changes.
**Corrected after the ticket ran.** The original text said "nothing is exempt", and it was
wrong. Two references are part of a path to a document that still exists:
| Site | Reference |
| ---------------------------------- | --------------------------------------------------- |
| `backend/README.md:18` | `docs/project/backlog/WP-22-durable-persistence.md` |
| `Domain/Letters/LetterHtml.cs:153` | `docs/project/backlog/WP-25-letter-preview-html.md` |
| Site | Reference |
| ---------------------------------- | ----------------------------------------------------------- |
| `backend/README.md:18` | `docs/project/archive/backlog/WP-22-durable-persistence.md` |
| `Domain/Letters/LetterHtml.cs:153` | `docs/project/archive/backlog/WP-25-letter-preview-html.md` |
RD-18 exempted this same class of reference (`a11y.mdx:68`). A path that resolves is a
pointer, not provenance. Stripping the number breaks the path, and describing the file in