fix(env): detect default fish config path in vp env doctor

crates/vite_global_cli/src/commands/env/doctor.rs

@@ -503,6 +503,14 @@ fn check_profile_files(vite_plus_home: &str) -> Option<String> {
         }
     }
 
+    // Also check the default fish conf.d location
+    let fish_path = format!("{home_dir}/.config/fish/conf.d/vite-plus.fish");
+    if let Ok(content) = std::fs::read_to_string(&fish_path) {
+        if search_strings.iter().any(|s| content.contains(s)) {
+            return Some(abbreviate_home(&fish_path));
+        }
+    }
+
     None
 }
 
@@ -888,4 +896,38 @@ mod tests {
         assert!(result.is_some(), "Should find vite-plus.fish in XDG_CONFIG_HOME");
         assert!(result.unwrap().contains("vite-plus.fish"));
     }
+
+    #[test]
+    #[serial]
+    #[cfg(not(windows))]
+    fn test_check_profile_files_default_fish_config() {
+        let temp = TempDir::new().unwrap();
+        let fake_home = temp.path().join("home");
+        std::fs::create_dir_all(&fake_home).unwrap();
+
+        let fish_dir = fake_home.join(".config/fish/conf.d");
+        std::fs::create_dir_all(&fish_dir).unwrap();
+        std::fs::write(fish_dir.join("vite-plus.fish"), "source \"$HOME/.vite-plus/env.fish\"\n")
+            .unwrap();
+
+        let _guard = ProfileEnvGuard::new(&fake_home, None, None);
+
+        let result = check_profile_files("$HOME/.vite-plus");
+        assert!(result.is_some(), "Should find vite-plus.fish in default fish conf.d");
+        assert!(result.unwrap().contains("vite-plus.fish"));
+    }
+
+    #[test]
+    #[serial]
+    #[cfg(not(windows))]
+    fn test_check_profile_files_no_fish_config() {
+        let temp = TempDir::new().unwrap();
+        let fake_home = temp.path().join("home");
+        std::fs::create_dir_all(&fake_home).unwrap();
+
+        let _guard = ProfileEnvGuard::new(&fake_home, None, None);
+
+        let result = check_profile_files("$HOME/.vite-plus");
+        assert_eq!(result, None);
+    }
 }