docs: replace SHOWCASE-ROADMAP.md with docs/backlog/ (17 WPs)

Turns the prior roadmap sketch into ordered, gated work packages (enforcement
gates, FP/DDD consistency, CIBG fidelity, Storybook curriculum, a11y) from the
2026-07-02 showcase-hardening audit.

docs/backlog/WP-11-markup-fidelity.md

@@ -0,0 +1,76 @@
+# WP-11 — CIBG markup fidelity: application-link + absent-class triage
+
+Status: todo
+Phase: 2 — CIBG fidelity
+
+## Why
+
+`application-link.component.ts` invents `.application` / `.application-title` — absent
+from the vendored CSS. The real "aanvragen" pattern styles
+`.dashboard-block.applications li a` with `h3`/`.h3`, and `.subtitle/.status/.cta`
+scoped **inside** `.applications`. The invented classes mean the rows only look right by
+accident of parent scoping, and `.application-title` is dead. A few other components use
+classes that don't exist in the vendored build.
+
+## Read first
+
+- https://designsystem.cibg.nl/componenten/aanvragen/
+- `public/cibg-huisstijl/css/huisstijl.min.css` (grep `.applications`, `.breadcrumb`,
+  error-summary candidates)
+- `src/app/shared/ui/application-link/application-link.component.ts` +
+  `application-list/application-list.component.ts`
+- `src/app/shared/layout/page-shell/page-shell.component.ts` (`.back`),
+  `wizard-shell/wizard-shell.component.ts` (`.es-list`/`.es-title`),
+  `src/app/shared/ui/upload/delivery-channel-toggle/delivery-channel-toggle.component.ts`
+  (`.radio-option`), `shared/layout/breadcrumb/breadcrumb.component.ts`
+
+## Decisions (pre-made, don't relitigate)
+
+- application-list/link: rework markup to the documented `.dashboard-block.applications`
+  scoping chain; keep the component API (`heading/subtitle/cta/to`) unchanged.
+- For each remaining absent class: **adopt a vendored pattern if one exists, else mark as
+  CIBG-gap extension** (marker format per WP-13; define inline if WP-13 hasn't run).
+  This fallback is explicit so the WP can't stall on a missing upstream pattern.
+- Wizard error summary: check whether CIBG's Foutmelding/Veldvalidatie pattern classes
+  are vendored; adopt if so, else mark as gap (the current behavior/a11y stays —
+  `role="alert"`, focus management).
+- Breadcrumb: `.breadcrumb` IS vendored — verify usage against CIBG Kruimelpad and
+  annotate only; no rework expected.
+
+## Files
+
+- `application-link.component.ts`, `application-list.component.ts` (+ stories)
+- `page-shell.component.ts`, `wizard-shell.component.ts`,
+  `delivery-channel-toggle.component.ts`, `breadcrumb.component.ts` (annotations/markers
+  or adopted patterns)
+- `src/app/registratie/ui/dashboard.page.ts` (visual consumer — no code change expected)
+
+## Steps
+
+1. Rework application-list/link markup; delete `.application`/`.application-title`.
+2. Grep the vendored CSS for Foutmelding/Veldvalidatie-ish classes; adopt or mark.
+3. Triage `.back` and `.radio-option`: adopt or mark.
+4. Verify breadcrumb; add the "wraps vendored `.breadcrumb` (CIBG Kruimelpad)" comment.
+5. Eyeball the dashboard — a visual diff on "Wat wilt u doen?" is intended.
+
+## Acceptance criteria
+
+- [ ] `grep -rn '"application"\|application-title' src/app` → empty (component selector
+      aside).
+- [ ] Every invented class either replaced by a vendored pattern or carries the gap
+      marker.
+- [ ] Dashboard + wizard stories reviewed; axe green.
+
+## Verification
+
+GREEN + `npm run test-storybook:ci`. Manual: `npm start` → dashboard ("Wat wilt u
+doen?" list) + a wizard validation error (error summary).
+
+## Out of scope
+
+Datablock adoption (WP-12); the full gap register (WP-13).
+
+## Risks
+
+The intended dashboard visual diff needs human eyes — flag it in the session summary for
+the user.