normalize project structure: src/client + src/server + src/shared, standardize biome to lineWidth 80

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

package.json

@@ -5,24 +5,29 @@
 	"type": "module",
 	"scripts": {
 		"dev": "vite",
-		"dev:server": "cd server && bun run dev",
+		"dev:server": "bun --watch src/server/index.ts",
 		"dev:all": "bun run dev & bun run dev:server",
 		"build": "tsc --noEmit && vite build",
 		"preview": "vite preview",
+		"start": "bun run src/server/index.ts",
 		"lint": "biome check .",
 		"lint:fix": "biome check --write .",
 		"test": "vitest run",
+		"db:generate": "bunx drizzle-kit generate",
+		"db:migrate": "bunx drizzle-kit migrate",
 		"prepare": "simple-git-hooks"
 	},
 	"dependencies": {
-		"@biomejs/cli-darwin-arm64": "^2.4.5",
 		"@electric-sql/pglite": "^0.2.17",
+		"@hono/zod-validator": "^0.5.0",
 		"@tanstack/react-form": "^1.0.0",
 		"@tanstack/react-router": "^1.114.0",
 		"class-variance-authority": "^0.7.1",
 		"clsx": "^2.1.1",
+		"drizzle-orm": "^0.45.1",
 		"hono": "^4.7.0",
 		"lucide-react": "^0.474.0",
+		"postgres": "^3.4.8",
 		"radix-ui": "^1.4.3",
 		"react": "^19.0.0",
 		"react-dom": "^19.0.0",
@@ -35,10 +40,12 @@
 		"@tailwindcss/vite": "^4.0.0",
 		"@tanstack/router-plugin": "^1.114.0",
 		"@testing-library/react": "^16.0.0",
+		"@types/bun": "^1.3.10",
 		"@types/node": "^25.3.3",
 		"@types/react": "^19.0.0",
 		"@types/react-dom": "^19.0.0",
 		"@vitejs/plugin-react": "^4.4.0",
+		"drizzle-kit": "^0.31.9",
 		"lint-staged": "^15.0.0",
 		"simple-git-hooks": "^2.11.0",
 		"tailwindcss": "^4.0.0",