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atomic-design-poc/docs/project/archive/backlog/WP-33-dev-switchers.md
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ehoandClaude Opus 5 12f17d9d73 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>
2026-09-08 23:00:38 +02:00

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# WP-33 — In-app dev switchers (scenario + role)
Status: done
Phase: 7 — refinements
## Why
The two dev-only stand-ins — the async `?scenario=` toggle (`scenario.interceptor.ts`) and the
faked `?role=` (`role.interceptor.ts`) — were driven by hand-editing the URL query string.
Awkward for demos: you had to remember the valid values and retype them. This WP surfaces both
as dropdowns in the existing dev panel so a scenario/role can be flipped with a click.
## Decisions (pre-made, don't relitigate)
- **No new component/shell wiring.** The switchers live inside the existing `debug-state`
devtool (the sanctioned dev-only fab/panel already mounted in the shell under `isDevMode()`).
- **Reuse the mechanism modules, don't duplicate their source of truth.** `scenario.ts`/`role.ts`
gain a `set*` setter + an exported valid-values list; the panel imports them. `debug-state` is
added to the `ui→infrastructure` eslint exemption (same precedent as its existing cross-context
exemption) rather than re-declaring the storage keys / valid lists in the UI.
- **Scenario becomes tab-sticky (sessionStorage), mirroring role.** Without this the switcher
would be near-useless: navigation drops the query param and reverts to `default` mid-demo.
- **Apply by `location.reload()`.** Both values are read per-request in interceptors and gate
server-computed decision flags already fetched by eager `httpResource`s — a reload is the
simplest correct way to re-run them. Acceptable for a dev tool.
## Files
- `shared/infrastructure/scenario.ts` — tab-sticky read (mirrors role), `setScenario`, exported
`SCENARIOS`; co-located `scenario.spec.ts`.
- `shared/infrastructure/role.ts``setRole`, exported `ROLES`.
- `shared/ui/debug-state/debug-state.component.ts` — two `<select>`s in the panel.
- `eslint.config.mjs` — extend the debug-state devtool exemption to the ui→infrastructure rule.
## Acceptance criteria
- [x] Dev panel shows role + scenario dropdowns; changing one persists it and reloads.
- [x] Scenario survives navigation within the tab (sticky).
- [x] `npm run ci` green (lint, tests incl. new scenario spec, localized build).