Initial commit: Price Hunter — self-hosted price comparison engine

Complete application scaffolding with:
- Backend: Node.js + Fastify + sql.js (SQLite)
- Frontend: SvelteKit + Tailwind CSS
- Scraper engine with parallel fan-out, rate limiting, cheerio-based parsing
- Store management with CSS selector config and per-store test pages
- Docker setup for single-command deployment

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -0,0 +1,35 @@
+{
+  "name": "pricehunter",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev:server": "tsx watch src/server/index.ts",
+    "dev:client": "cd src/client && npm run dev",
+    "dev": "concurrently \"npm run dev:server\" \"npm run dev:client\"",
+    "build:client": "cd src/client && npm run build",
+    "build:server": "tsc",
+    "build": "npm run build:client && npm run build:server",
+    "start": "node dist/server/index.js",
+    "test": "vitest run",
+    "test:watch": "vitest"
+  },
+  "dependencies": {
+    "@fastify/cors": "^10.0.1",
+    "@fastify/static": "^8.0.3",
+    "bottleneck": "^2.19.5",
+    "cheerio": "^1.0.0",
+    "dotenv": "^16.4.7",
+    "fastify": "^5.2.1",
+    "p-limit": "^6.2.0",
+    "sql.js": "^1.11.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.10.0",
+    "concurrently": "^9.1.2",
+    "pino-pretty": "^13.1.3",
+    "tsx": "^4.19.2",
+    "typescript": "^5.7.2",
+    "vitest": "^2.1.8"
+  }
+}