test(e2e): Playwright suite — happy path + 2 bug regression guards

[abk1969]

Summary

Closes the last TDD audit recommendation: end-to-end coverage of the 7-step parcours in a real browser. Stacks on PR #8 (the parcours bug fixes).

This is the final layer of the test pyramid for ai_act_compass:

• Unit tests (classify.test.js, deliverables.test.js) — 102 tests on pure logic + data invariants
• Component tests (app.dom.test.jsx) — 4 jsdom smoke tests on React tree mount + state-driven UI
• E2E tests (this PR) — 4 Playwright tests on real-browser parcours flows

Tests added

#	Test	Catches
1	Happy path: provider with no triggers → RISQUE_MINIMAL	Full-flow rendering, basic verdict
2	Public-body deployer + Annex III §3 → HAUT_RISQUE_ANNEXE_III + FRIA visible	PR #3 Item C FRIA gating wiring
3	Integrator + substantialModification + systemic risk → GPAI_RS	Regression guard for PR #8 Bug #1 (Step 7 art. 25 flip visibility)
4	Prohibition (h) + carve-out claim → advances to Step 4, NOT verdict	Regression guard for PR #8 Bug #2 (short-circuit respecting carve-outs)

Infrastructure

• New devDep: `@playwright/test`
• `playwright.config.js` — auto-spawns `npm run dev` on :5173, single Chromium project, retain trace + screenshot on failure (in `test-results/`)
• `.gitignore` — excludes `test-results/` and `playwright-report/`

Selector strategy

OptionCard renders as `` (single-select) or `` (multi-select). The accessible name composes `<title> — <sub>— `. Tests anchor on unique `sub` fragments (`art. 3(3)`, `art. 5(1)(h)`, `art. 5(2)-(3)`, etc.) which are regulatory citations — stable across copy edits.</sub>

Not in scope

• Not wired into `npm test` (Vitest scope only). Run manually: `npx playwright test`
• CI integration is left to a follow-up (would need a Github Action job that runs `npx playwright install --with-deps` + `npx playwright test`)
• French-language flows — currently only EN is exercised; a parametrised version covering FR could be added

Test plan

• `npx playwright test` — 4 tests pass in ~25 s
• Manually break Bug feat(test): Vitest + extract computeCategory to src/lib/ #1's fix (revert the IIFE in Step 7) — test Close three EU AI Act regulatory gaps (art. 5 carve-outs, art. 27 FRIA, art. 25 flip) #3 fails
• Manually break Bug ci: add GitHub Actions test workflow + README badge #2's fix (revert `hasUnCarvedOutProhibition`) — test Refine art. 27(1)(b) FRIA gating to Annex III §5(b)/§5(c) #4 fails
• All 113 Vitest tests still pass (these are orthogonal)

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
ai_act_compass	Ready	Preview, Comment	May 15, 2026 4:01pm

[abk1969]

Merged into main via rebase fast-forward (commits applied via stack rebase, see main's history). Branch deleted.