feat(ui): improve client form modal UX

- Rename tabs: "Basic" → "Basics", "Config" → "Credentials"
- Move reverseTag field from Credentials tab to Basics tab
- Move IP log button inline with limitIp field (tooltip button, edit mode only)
- Hide random email button when editing an existing client
- Add tooltips to totalGB and limitIp fields with descriptive hints
- Rename labels: "Total Sent/Received (GB)" → "Traffic Limit (GB)", "Duration" → "Duration (days)"
- Add renewDays translation key for auto-renew label with unit hint
- Remove redundant filterOption and width style from AutoComplete group selectors
- Update all 15 locale files with new and renamed translation keys

internal/web/translation/id-ID.json

@@ -637,8 +637,8 @@
       }
     },
     "clients": {
-      "tabBasic": "Dasar",
-      "tabConfig": "Konfigurasi",
+      "tabBasics": "Dasar",
+      "tabCredentials": "Kredensial",
       "add": "Tambah klien",
       "edit": "Ubah klien",
       "submitAdd": "Tambah klien",
@@ -666,10 +666,11 @@
       "prefix": "Awalan",
       "postfix": "Akhiran",
       "delayedStart": "Mulai setelah penggunaan pertama",
-      "expireDays": "Durasi",
+      "expireDays": "Durasi (hari)",
       "days": "Hari",
       "renew": "Perpanjangan otomatis",
       "renewDesc": "Perpanjangan otomatis setelah kedaluwarsa. (0 = nonaktif) (satuan: hari)",
+      "renewDays": "Perpanjangan otomatis (hari)",
       "searchPlaceholder": "Cari email, komentar, sub ID, UUID, kata sandi, auth…",
       "filterTitle": "Filter klien",
       "clearAllFilters": "Hapus semua",
@@ -691,10 +692,12 @@
       "hasNot": "Tidak memiliki",
       "title": "Klien",
       "actions": "Aksi",
-      "totalGB": "Total Kirim/Terima (GB)",
+      "totalGB": "Batas Trafik (GB)",
+      "totalGBDesc": "Kuota data untuk klien ini. 0 = tidak terbatas.",
       "expiryTime": "Kedaluwarsa",
       "addClients": "Tambah klien",
       "limitIp": "Batas IP",
+      "limitIpDesc": "Jumlah maksimum IP bersamaan. 0 = tidak terbatas.",
       "password": "Kata sandi",
       "subId": "ID Langganan",
       "online": "Online",
@@ -1733,4 +1736,4 @@
       "chooseInbound": "Pilih Inbound"
     }
   }
-}
+}