feat(config): add CORS configuration for development environment

- configure global CORS policy allowing all origins, headers, and methods
- register CorsFilter bean for cross-origin request handling
- bump version to v0.1f

build.gradle.kts

@@ -7,7 +7,7 @@ plugins {
 }
 
 group = "com.msksbr"
-version = "v0.1"
+version = "v0.1f"
 description = "bookMgr"
 
 java {

src/main/kotlin/com/msksbr/bookmgr/config/CorsConfig.kt

@@ -0,0 +1,31 @@
+package com.msksbr.bookmgr.config
+
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+import org.springframework.web.cors.CorsConfiguration
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource
+import org.springframework.web.filter.CorsFilter
+
+/*
+* CORS 跨域配置
+* 配置全局 CORS 策略，允许所有来源（origins）、请求头（headers）和 HTTP 方法
+* 适用于前后端分离架构下的开发环境；生产环境建议按需收紧 allowedOrigins
+*/
+@Configuration
+class CorsConfig {
+    /*
+    * 注册 CorsFilter Bean
+    * 拦截所有 / 路径并应用允许跨域的配置
+    */
+    @Bean
+    fun corsFilter(): CorsFilter {
+        val config = CorsConfiguration()
+        config.addAllowedOrigin("*")
+        config.addAllowedHeader("*")
+        config.addAllowedMethod("*")
+
+        val source = UrlBasedCorsConfigurationSource()
+        source.registerCorsConfiguration("/**", config)
+        return CorsFilter(source)
+    }
+}