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>

.claude/skills/document-feature/SKILL.md

@@ -20,11 +20,11 @@ The repo splits docs by kind (`docs/README.md`). Pick one — don't write all th
   _decision/pattern_ (a tradeoff, a "we chose X over Y"). One format, no drift:
   `# ADR-NNNN — Title`, then `Status: Accepted · Date: YYYY-MM-DD`, then
   Problem / Options / Decision / Consequences.
-- **WP** — `docs/project/backlog/WP-NN-<slug>.md`. Tracked work; use the template at the
+- **WP** — `docs/project/archive/backlog/WP-NN-<slug>.md`. Tracked work; use the template at the
-  bottom of `docs/project/backlog/README.md`.
+  bottom of `docs/project/archive/backlog/README.md`.
 
 Then **add the index row**: `docs/README.md` table for a reference doc/ADR,
-`docs/project/backlog/README.md` for a WP. A doc with no index row is invisible.
+`docs/project/archive/backlog/README.md` for a WP. A doc with no index row is invisible.
 
 ## Adjusted feature → update what already describes it
 

.claude/skills/new-ssp/SKILL.md

@@ -85,8 +85,8 @@ Work through that checklist, keeping the GREEN gate below passing at every step.
   placeholder path and creates an empty `public/<name>-huisstijl/` — it cannot generate a
   real house style. Vendor your CSS there, then re-point the `--rhc-*` bridge in
   `src/styles.scss` (ADR-0003 pattern: bridge, don't rewrite tokens), then `npm run check:tokens`.
-- `docs/project/backlog/` WPs, PRDs, and memory-specific docs — new portal, new backlog
+- `docs/project/archive/backlog/` WPs, PRDs, and memory-specific docs — new portal, new backlog
-  (keep `docs/project/backlog/README.md`'s WP process/template if you like the workflow).
+  (keep `docs/project/archive/backlog/README.md`'s WP process/template if you like the workflow).
   `docs/reference/scaffolding.md` also names `BigRegister.Api` in prose — update by hand.
 - `e2e/*.spec.ts` (`smoke.spec.ts`, `brief-v2.spec.ts`, `error-state.spec.ts`): full
   BIG-register user-flow tests (BSN login → registration wizard → submission assertions).

.prettierignore

@@ -28,5 +28,5 @@ plop-templates/
 backend/
 
 # Agent prompts — their exact wording is the input, reflowing markdown edits the prompt
-docs/project/refactor-backlog-setup/agents/
+docs/project/archive/refactor-backlog-setup/agents/
-docs/project/refactor-backlog-setup/refactor-backlog/final-prompts/
+docs/project/archive/refactor-backlog-setup/refactor-backlog/final-prompts/

CLAUDE.md

@@ -12,7 +12,7 @@ signals. Auth is faked; **data and business rules are served by a minimal ASP.NE
 Core backend** (`backend/`, see its README) and consumed through an NSwag-generated
 typed client. The FE renders the backend's decisions. Reference data mimicking
 BRP/DUO (`Data/SeedData.cs`) is in-memory; applications, documents and the brief
-persist to a SQLite file via EF Core (WP-22) — `docs/project/backlog/WP-22-durable-persistence.md`.
+persist to a SQLite file via EF Core (WP-22) — `docs/project/archive/backlog/WP-22-durable-persistence.md`.
 
 **Monorepo (WP-67):** two Angular projects share one backend + one shared library —
 `apps/ssp` (Zorgverlener self-service, this doc's main subject) and `apps/behandelportal`
@@ -72,7 +72,7 @@ so this doesn't depend on a human remembering to run `/model` at the right momen
   `git status`/`grep`, verifying a file exists. No Edit/Write access.
 
 Delegate to the matching agent only when the _current_ session isn't already on that
-model — don't add indirection for its own sake. `docs/project/backlog/README.md`'s
+model — don't add indirection for its own sake. `docs/project/archive/backlog/README.md`'s
 session protocol is the worked example of this in practice.
 
 ## The decisions (non-negotiable working agreements)

README.md

@@ -66,7 +66,7 @@ Admin pages (`/beheer/*`, `/brief/huisstijl`) need the `admin` role — see
 | know _why_ a decision was made    | [the ADRs](docs/reference/architecture/) — BFF-lite, contexts, huisstijl, stamdata, ZGW, test data |
 | work on the backend / BFF         | [backend/README.md](backend/README.md)                                                             |
 | run OpenZaak locally              | [backend/openzaak/README.md](backend/openzaak/README.md)                                           |
-| see what shipped, or pick up work | [docs/project/backlog/README.md](docs/project/backlog/README.md)                                   |
+| see what shipped, or pick up work | [docs/project/archive/backlog/README.md](docs/project/archive/backlog/README.md)                   |
 | build a feature the house way     | [`.claude/skills/`](.claude/skills/) — invocable recipes (`new-feature`, `form-machine`, …)        |
 | know the import rules             | [dependencies.md](docs/reference/architecture/dependencies.md) — enforced by `dep:check`           |
 | work on this repo as an AI agent  | [CLAUDE.md](CLAUDE.md)                                                                             |

backend/README.md

@@ -15,7 +15,7 @@ status codes and error envelope are production-shaped.
 covers it, see `docker-compose.yml`) does **not** lose data. Delete the file to
 reset demo data back to empty, the same state a fresh clone starts from. This is
 a deliberate, right-sized choice for a POC (SQLite, no external DB service) — see
-`docs/project/backlog/WP-22-durable-persistence.md`.
+`docs/project/archive/backlog/WP-22-durable-persistence.md`.
 
 ## Run
 

backend/src/BigRegister.Api/Domain/Letters/LetterHtml.cs

@@ -152,7 +152,7 @@ public static class LetterHtml
 
   // Walks up from the running assembly's own directory (NOT the process cwd, which
   // varies by how `dotnet run`/docker/tests invoke it — see
-  // docs/project/backlog/WP-25-letter-preview-html.md) until it finds `public/letter.css`. docker-compose.yml bind-mounts `./public` under the
+  // docs/project/archive/backlog/WP-25-letter-preview-html.md) until it finds `public/letter.css`. docker-compose.yml bind-mounts `./public` under the
   // api container's `/src` for exactly this walk to resolve there too.
   private static string FindLetterCss()
   {

docs/project/archive/README.md

@@ -0,0 +1,11 @@
+# Archive — finished backlogs
+
+The trees in this directory are historical. Every ticket in `backlog/` and
+`refactor-backlog-setup/` carries `Status: done`. `SHOWCASE-ROADMAP.md` was superseded before
+either arc started.
+
+Git holds the rest — `git log --follow` on any file here shows its full history, including the
+work that produced it.
+
+The live plan is `docs/project/readable-codebase/`. Product reference material is
+`docs/project/prd/`.

docs/project/archive/SHOWCASE-ROADMAP.md

@@ -1,6 +1,6 @@
 # Showcase roadmap — superseded
 
-**This roadmap is superseded by [`docs/project/backlog/`](backlog/README.md)** (2026-07-02).
+**This roadmap is superseded by [`docs/project/archive/backlog/`](backlog/README.md)** (2026-07-02).
 
 The backlog absorbs and corrects this document: its Storybook-as-curriculum track became
 WP-14/15 (+ per-invariant MDX pages in WP-05/07/08/13/17), its enforcement track became

docs/project/archive/backlog/WP-68-ddd-aggregate-hardening.md

@@ -59,7 +59,7 @@ The review's remaining findings are listed under "Follow-ups" and are **not** th
 ## Read first
 
 - `CLAUDE.md` §"The decisions" #3 (make illegal states unrepresentable) and #4 (BFF-lite)
-- [ADR-0001 — BFF-lite + decision DTOs](../../reference/architecture/0001-bff-lite-decision-dtos.md)
+- [ADR-0001 — BFF-lite + decision DTOs](../../../reference/architecture/0001-bff-lite-decision-dtos.md)
 - `backend/src/BigRegister.Api/Data/ApplicationStore.cs` (the `Aanvraag` entity, the store's
   lock discipline, `AanvraagStatusTag`, `RecordBesluit`)
 - `backend/src/BigRegister.Api/Contracts/Mappers.cs` (`ToStatusDto` — the logic to move)

docs/project/archive/backlog/WP-69-intake-scholing-threshold-enforcement.md

@@ -39,7 +39,7 @@ re-validates as authority) is unenforced for the one rule it was written to illu
 
 - `backend/src/BigRegister.Api/Domain/Intake/IntakePolicy.cs` (the corrected doc-comment,
   WP-68)
-- [ADR-0001 — BFF-lite + decision DTOs](../../reference/architecture/0001-bff-lite-decision-dtos.md)
+- [ADR-0001 — BFF-lite + decision DTOs](../../../reference/architecture/0001-bff-lite-decision-dtos.md)
   §"config value"
 - `apps/ssp/src/app/herregistratie/domain/intake.machine.ts` (`lageUren`, `scholingGevolgd`,
   `punten` — the wizard's existing FE-side rule and its answers)