refactor: structure config validation outcomes

- Replace boolean/string validation results with structured ValidationOutcome values across config validation, profile switching, DNS validation, and script validation. Callers can now distinguish valid, invalid, skipped, and busy states, with invalid results carrying an error kind and message.

- Route core config updates through structured outcomes and checked forced updates. Generation and validation failures now discard runtime drafts and surface validation failures instead of relying on empty success messages.

- Preserve existing frontend ergonomics by keeping boolean service wrappers where callers only need success, while direct DNS and script validation consumers receive ValidationOutcome. Failed profile editor saves reload the backend-restored file content and synchronize Monaco models so reopened editors show the restored state.

src-tauri/src/feat/config.rs

@@ -23,7 +23,7 @@ pub async fn patch_clash(patch: &Mapping) -> Result<()> {
                 tray::Tray::global().update_menu_and_icon().await;
             }
             Config::runtime().await.edit_draft(|d| d.patch_config(patch));
-            CoreManager::global().update_config().await?;
+            CoreManager::global().update_config_checked().await?;
         }
         handle::Handle::refresh_clash();
         <Result<()>>::Ok(())
@@ -206,7 +206,7 @@ async fn process_terminated_flags(update_flags: UpdateFlags, patch: &IVerge) ->
         CoreManager::global().restart_core().await?;
     }
     if update_flags.contains(UpdateFlags::CLASH_CONFIG) {
-        CoreManager::global().update_config().await?;
+        CoreManager::global().update_config_checked().await?;
         handle::Handle::refresh_clash();
     }
     if update_flags.contains(UpdateFlags::VERGE_CONFIG) {

src-tauri/src/feat/profile.rs

@@ -1,7 +1,7 @@
 use crate::{
     cmd,
     config::{Config, PrfItem, PrfOption, profiles::profiles_draft_update_item_safe},
-    core::{CoreManager, handle, tray},
+    core::{CoreManager, handle, tray, validate::ValidationOutcome},
     utils::help::{mask_err, mask_url},
 };
 use anyhow::{Result, bail};
@@ -205,11 +205,19 @@ pub async fn update_profile(
 
     if should_refresh {
         logging!(info, Type::Config, "[订阅更新] 更新内核配置");
-        match CoreManager::global().update_config().await {
-            Ok(_) => {
+        match CoreManager::global().update_config_with_force(is_mannual_trigger).await {
+            Ok(outcome) if outcome.is_valid() => {
                 logging!(info, Type::Config, "[订阅更新] 更新成功");
                 handle::Handle::refresh_clash();
             }
+            Ok(outcome @ (ValidationOutcome::Skipped { .. } | ValidationOutcome::Busy)) if !is_mannual_trigger => {
+                logging!(info, Type::Config, "[订阅更新] 本次配置刷新已跳过: {}", outcome);
+            }
+            Ok(outcome) => {
+                let message = outcome.to_string();
+                logging!(error, Type::Config, "[订阅更新] 更新失败: {}", message);
+                handle::Handle::notice_message("update_failed", message);
+            }
             Err(err) => {
                 logging!(error, Type::Config, "[订阅更新] 更新失败: {}", err);
                 handle::Handle::notice_message("update_failed", format!("{err}"));
@@ -222,6 +230,6 @@ pub async fn update_profile(
 }
 
 /// 增强配置
-pub async fn enhance_profiles() -> Result<(bool, String)> {
-    crate::core::CoreManager::global().update_config().await
+pub async fn enhance_profiles() -> Result<ValidationOutcome> {
+    CoreManager::global().update_config_forced().await
 }