WP-00: project skeleton with three-level test harness

Cargo workspace (domain, application, infrastructure, api), axum health endpoint
with SPA fallback, Vue 3 + Tailwind frontend, Vitest, Playwright, Makefile,
Gitea Actions CI and README.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

frontend/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "frontend",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vue-tsc -b && vite build",
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:ui": "playwright test",
+    "lint": "eslint . && prettier --check src e2e",
+    "format": "prettier --write src e2e",
+    "typecheck": "vue-tsc -b"
+  },
+  "dependencies": {
+    "@tailwindcss/vite": "^4.3.3",
+    "pinia": "^4.0.3",
+    "tailwindcss": "^4.3.3",
+    "vue": "^3.5.41",
+    "vue-router": "^5.3.1"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.62.1",
+    "@types/node": "^24.13.3",
+    "@vitejs/plugin-vue": "^6.0.8",
+    "@vitest/coverage-v8": "^4.1.11",
+    "@vue/eslint-config-typescript": "^14.9.0",
+    "@vue/test-utils": "^2.5.0",
+    "@vue/tsconfig": "^0.9.1",
+    "eslint": "^10.9.1",
+    "eslint-plugin-vue": "^10.10.0",
+    "jsdom": "^29.1.1",
+    "prettier": "^3.9.6",
+    "typescript": "~6.0.2",
+    "vite": "^8.2.2",
+    "vitest": "^4.1.11",
+    "vue-tsc": "^3.3.11"
+  }
+}