Clarify Feishu upstream names and simplify sync copy

frontend/src/locales/en-US.json

@@ -794,7 +794,7 @@
     "commonSetupTitle": "First-time shared network setup", "commonSetupHint": "Check permissions, default route and IPv4 forwarding. Enable shared forwarding only when needed; install protocol-specific dependencies separately in Create Tunnel.", "hostRoot": "Privileges", "hostRoute": "Default route", "hostForward": "IPv4 forwarding", "enableForwarding": "Enable IPv4 forwarding", "forwardingEnabled": "IPv4 forwarding enabled"
   },
   "feishuSync": {
-    "title": "Feishu directory", "publishAll": "Publish the app in Feishu and set its availability to All Employees. Also grant directory visibility for the departments to import.", "hint": "Import manually or every 30 minutes when enabled. Imported members do not receive VPN access or tunnel grants. Names are shown exactly as returned by Feishu.", "permissions": "Grant app identity access to department and user lists, publish the app, and set its directory visibility to the intended departments and members.", "liveCheck": "Live permission check", "recheck": "Check again", "checking": "Checking Feishu access and visibility…", "checkFailed": "Could not check Feishu permissions", "liveVisibility": "App API visibility: {departments} department roots, {users} individual users (not the enterprise total).", "scopeMissing": "No visible departments. Include departments in the app directory visibility and publish. Department and user-list permissions cannot yet be verified.", "permissionMissing": "Department endpoint: {department}; user list endpoint: {users}. Grant the required app identity scopes and publish.", "apiReady": "Department and user-list endpoints work. Verify All Employees and publication in the Feishu console.", "ok": "Available", "auto": "Auto sync (30 min)", "run": "Sync now", "lastSuccess": "Last success", "counts": "Departments {departments} · members {members}", "visibility": "Last sync scope: {departments} department roots · {users} individual users", "noDepartments": "Only individually visible members were returned. Grant department read access and expand the app's directory visibility in Feishu, publish, then sync again.", "name": "Name", "departments": "Department IDs", "firstMembers": "Showing the first 500 members", "saved": "Sync settings saved", "started": "Sync started; watch progress below", "done": "Directory sync complete", "failed": "Directory sync failed"
+    "title": "Feishu directory", "publishAll": "Publish the Feishu app, set availability to All Employees, and include departments in directory visibility.", "hint": "Sync manually or every 30 minutes; imports do not grant VPN access.", "permissions": "Grant department and user-list access; Feishu error codes show missing permissions.", "liveCheck": "Access check", "recheck": "Check again", "checking": "Checking…", "checkFailed": "Access check failed", "liveVisibility": "App visibility: {departments} departments · {users} individual users (not the enterprise total)", "scopeMissing": "Departments are not visible. Check department access and directory scope, then publish.", "permissionMissing": "Departments: {department}; users: {users}. Grant scopes indicated by the error codes.", "apiReady": "Endpoints work. Confirm publication and All Employees in Feishu.", "ok": "Available", "auto": "Auto sync (30 min)", "run": "Sync now", "lastSuccess": "Last success", "counts": "Departments {departments} · members {members}", "visibility": "Last scope: {departments} departments · {users} individual users", "noDepartments": "Departments are not visible yet. Check the app's access and directory scope.", "numberName": "Feishu still returns a 'User + number' name. Sync saved that value; if you just renamed them, check app visibility and retry later.", "name": "Name", "departments": "Department IDs", "firstMembers": "Showing the first 500 members", "saved": "Sync settings saved", "started": "Sync started", "done": "Directory sync complete", "failed": "Directory sync failed"
   },
   "feishuDirectory": {
     "title": "Feishu directory lookup",