Remove debug headers and return 403 on access denied

src/main/kotlin/com/android/trisolarisserver/config/DebugExceptionResolver.kt

@@ -1,23 +0,0 @@
-package com.android.trisolarisserver.config
-
-import jakarta.servlet.http.HttpServletRequest
-import jakarta.servlet.http.HttpServletResponse
-import org.springframework.stereotype.Component
-import org.springframework.web.servlet.HandlerExceptionResolver
-import org.springframework.web.servlet.ModelAndView
-
-@Component
-class DebugExceptionResolver : HandlerExceptionResolver {
-    override fun resolveException(
-        request: HttpServletRequest,
-        response: HttpServletResponse,
-        handler: Any?,
-        ex: Exception
-    ): ModelAndView? {
-        if (request.getHeader("X-Debug-Auth") == "1" && !response.isCommitted) {
-            val msg = ex.message?.take(200) ?: ""
-            response.setHeader("X-Exception", "${ex::class.java.simpleName}:$msg")
-        }
-        return null
-    }
-}