feat: Setup projet Classeo avec infrastructure Docker et architecture DDD

Configure l'environnement de développement complet avec Docker Compose,
structure DDD 4 Bounded Contexts, et pipeline CI/CD GitHub Actions.

Corrections compatibilité CI:
- Symfony 8 nécessite monolog-bundle ^4.0 (la v3.x ne supporte que jusqu'à Symfony 7)
- ESLint v9 nécessite flat config (eslint.config.js) - le format .eslintrc.cjs est obsolète

frontend/package.json

@@ -0,0 +1,55 @@
+{
+  "name": "classeo-frontend",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite dev",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+    "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "test:coverage": "vitest run --coverage",
+    "test:e2e": "playwright test",
+    "lint": "eslint .",
+    "format": "prettier --write ."
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.50.0",
+    "@sveltejs/adapter-auto": "^4.0.0",
+    "@sveltejs/adapter-node": "^5.0.0",
+    "@sveltejs/kit": "^2.50.0",
+    "@sveltejs/vite-plugin-svelte": "^5.0.0",
+    "@tailwindcss/forms": "^0.5.7",
+    "@tailwindcss/typography": "^0.5.10",
+    "@testing-library/svelte": "^5.2.0",
+    "@types/node": "^22.0.0",
+    "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "@typescript-eslint/parser": "^8.0.0",
+    "@vitest/coverage-v8": "^2.1.0",
+    "autoprefixer": "^10.4.20",
+    "eslint": "^9.0.0",
+    "eslint-config-prettier": "^10.0.0",
+    "eslint-plugin-svelte": "^3.0.0",
+    "jsdom": "^27.4.0",
+    "postcss": "^8.4.47",
+    "prettier": "^3.4.0",
+    "prettier-plugin-svelte": "^3.3.0",
+    "prettier-plugin-tailwindcss": "^0.6.0",
+    "svelte": "^5.15.0",
+    "svelte-check": "^4.1.0",
+    "tailwindcss": "^3.4.16",
+    "typescript": "^5.7.0",
+    "typescript-eslint": "^8.54.0",
+    "vite": "^6.0.0",
+    "vitest": "^2.1.0"
+  },
+  "dependencies": {
+    "@tanstack/svelte-query": "^5.66.0",
+    "@vite-pwa/sveltekit": "^0.6.8",
+    "workbox-window": "^7.3.0"
+  },
+  "packageManager": "pnpm@10.28.2"
+}