Fix bridge profile environment isolation (#796)

packages/server/src/services/hermes/hermes-path.ts

@@ -7,7 +7,7 @@
  * - 用户自定义: HERMES_HOME 环境变量
  */
 
-import { resolve, join } from 'path'
+import { basename, dirname, resolve, join } from 'path'
 import { homedir } from 'os'
 
 /**
@@ -38,6 +38,20 @@ export function detectHermesHome(): string {
   return resolve(homedir(), '.hermes')
 }
 
+/**
+ * Detect the Hermes root data directory.
+ *
+ * `HERMES_HOME` may intentionally point at a profile directory when launching a
+ * specific gateway (`<root>/profiles/<name>`). Web UI profile management needs
+ * the root directory so it can read `active_profile` and enumerate profiles.
+ */
+export function detectHermesRootHome(): string {
+  const home = detectHermesHome()
+  const parent = dirname(home)
+  if (basename(parent) === 'profiles') return dirname(parent)
+  return home
+}
+
 /**
  * 获取 Hermes CLI 二进制文件路径
  * @param customBin 自定义的 hermes 二进制路径