refactor(web): set up component test infra + decompose ProjectWizard

Phase 4a: Add @testing-library/react, user-event, jest-dom, jsdom.
Switch vitest environment to jsdom, add setup file, create test-utils
with QueryClient wrapper.

Phase 4b: Extract ProjectWizard form logic into project-wizard/ subdir:
- types.ts: WizardState, Assignment, constants, factory functions
- useProjectWizardForm.ts: form state hook + canGoNext pure function

Phase 4c: 32 tests for canGoNext validation (all 5 steps), makeDefaultState,
and makeReq factory function.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/package.json

@@ -52,6 +52,9 @@
     "@capakraken/eslint-config": "workspace:*",
     "@capakraken/tsconfig": "workspace:*",
     "@playwright/test": "^1.49.1",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@testing-library/user-event": "^14.6.1",
     "@types/dompurify": "^3.2.0",
     "@types/node": "^22.10.2",
     "@types/react": "^19.0.6",
@@ -61,6 +64,7 @@
     "@vitest/coverage-v8": "^2.1.9",
     "autoprefixer": "^10.4.20",
     "eslint": "^10.2.0",
+    "jsdom": "^29.0.2",
     "postcss": "^8.4.49",
     "tailwindcss": "^3.4.17",
     "typescript": "^5.6.3",