chore: src/ yapısı, shadcn/ui ve temel bağımlılıklar

- app/ klasörü src/app altına taşındı, @/* alias'ı src/'yi gösteriyor
- tsconfig: noUncheckedIndexedAccess
- shadcn/ui (Radix, Nova) başlatıldı
- Better Auth, MongoDB 7.7, Mongoose 9, zod 4, react-hook-form, next-themes, sonner, TanStack Table
- next.config: standalone çıktı, poweredByHeader kapalı
- Geçici /api/health, i18n/tr.ts, Türkçe layout
- Prompt docs/PROMPT.md olarak taşındı ve Faz 0 kararları işlendi

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -2,25 +2,59 @@
   "name": "butcem",
   "version": "0.1.0",
   "private": true,
+  "description": "BÜTÇEM — aile bütçe, cari, birikim, ev stoğu ve akıllı alışveriş uygulaması",
+  "engines": {
+    "node": ">=26 <27"
+  },
   "scripts": {
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "lint": "eslint"
+    "lint": "eslint",
+    "typecheck": "tsc --noEmit",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "format": "prettier --write .",
+    "format:check": "prettier --check .",
+    "db:up": "docker compose up -d --wait",
+    "db:down": "docker compose down",
+    "seed": "tsx --env-file=.env.local scripts/seed.ts",
+    "seed:reset": "tsx --env-file=.env.local scripts/seed.ts --reset"
   },
   "dependencies": {
+    "@hookform/resolvers": "^7.0.2",
+    "@tanstack/react-table": "^9.3.1",
+    "better-auth": "^1.7.17",
+    "class-variance-authority": "^0.7.1",
+    "cn": "^0.5.2",
+    "lucide-react": "^1.68.0",
+    "mongodb": "~7.7",
+    "mongoose": "^9.11.4",
     "next": "16.4.5",
-    "react": "19.3.0",
-    "react-dom": "19.3.0"
+    "next-themes": "^0.4.6",
+    "radix-ui": "^1.8.1",
+    "react": "^19.3.1",
+    "react-dom": "^19.3.1",
+    "react-hook-form": "^7.91.0",
+    "server-only": "^0.0.1",
+    "shadcn": "^4.23.0",
+    "sonner": "^2.0.8",
+    "tw-animate-css": "^1.4.0",
+    "zod": "^4.6.7"
   },
   "devDependencies": {
+    "@faker-js/faker": "^10.6.0",
     "@tailwindcss/turbopack": "^4",
-    "@types/node": "^20",
+    "@types/node": "^26.6.6",
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^9",
     "eslint-config-next": "16.4.5",
+    "prettier": "^3.9.10",
+    "prettier-plugin-tailwindcss": "^0.8.1",
     "tailwindcss": "^4",
-    "typescript": "^5"
+    "tsx": "^4.23.15",
+    "typescript": "^5",
+    "vitest": "^5.1.0"
   }
 }