feat: initial commit with Nuxt 3 student management system

- Add Nuxt 3 + Prisma + SQLite full-stack setup
- Add student CRUD API with batch import/export
- Add stats dashboard with gender/class distribution
- Add target community settings feature
- Add Docker deployment support (Dockerfile + docker-compose)
- Add README with development and deployment instructions

prisma/schema.prisma

@@ -0,0 +1,30 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "sqlite"
+  url      = env("DATABASE_URL")
+}
+
+model Student {
+  id          Int      @id @default(autoincrement())
+  className   String
+  name        String
+  gender      String
+  birthday    String?
+  address     String?
+  fatherName  String?
+  fatherPhone String?
+  motherName  String?
+  motherPhone String?
+  createdAt   DateTime @default(now())
+  updatedAt   DateTime @updatedAt
+}
+
+model Settings {
+  id        Int      @id @default(autoincrement())
+  key       String   @unique
+  value     String
+  updatedAt DateTime @updatedAt
+}