refactor(i18n): U34 System & User 模块 i18n 清理 — ProfilePage + ResetPasswordDialog + SystemRolesTab + LdapManagementSection 4 文件 UI 硬编码中文清零

- ProfilePage.tsx: 从零接入 useTranslation，基本信息/安全设置/密码修改/用户名邮箱手机/账号来源 15 处中文→t()
- ResetPasswordDialog.tsx: 从零接入 useTranslation，重置密码标题/描述/LDAP提示/新密码确认密码/确认重置 11 处中文→t()
- SystemRolesTab.tsx: 权限分组标签(云资源/自动化/审批/审计)+toast 校验+confirm description+角色计数+空状态+权限列表计数+编码标签+尾部文案 12 处中文→t()/i18n.t()
- LdapManagementSection.tsx: 验证按钮+根OU标签+创建按钮×2+导入按钮+编辑用户描述 8 处中文→t()
- 新增 user.profile.* 14键 + user.resetPwd.* 11键 + system.* 16键 共 41 翻译键
- zh/en 7524→7565 +41 对齐
- tsc -b=0, npm build✓ (16.05s), ESLint errors=0/any=0/unused=0, go build=0
- 17/17 集成回归测试通过

frontend/src/locales/en-US.json

@@ -7455,7 +7455,23 @@
       "loadFailed": "Failed to load audit settings",
       "invalidRetentionDays": "Please select valid retention days",
       "noExpiredRecords": ", no expired records"
-    }
+    },
+    "permCloudResource": "Cloud Resources",
+    "permAutomation": "Automation",
+    "permApproval": "Approval",
+    "permAudit": "Audit",
+    "roleCodeRequired": "Please enter role code",
+    "confirmDeleteRoleDesc": "Are you sure to delete role \"{{name}}\"? This action cannot be undone.",
+    "roleCount": "{{count}} roles",
+    "noRoleData": "No role data",
+    "permListCount": "Permissions ({{count}})",
+    "roleCodeLabel": "Code: {{code}}",
+    "testConnection": "Verify",
+    "rootOu": "Root ({{dn}})",
+    "importSelected": "Import ({{count}})",
+    "importAll": "Import All ({{count}})",
+    "editLdapUserDesc": "Modify attributes of {{uid}}",
+    "permEffectTrailing": ", changes take effect after user re-login."
   },
   "aiops": {
     "title": "AIOps",
@@ -8273,6 +8289,35 @@
       "credentialCopied": "Credential copied",
       "saved": "I've saved it",
       "placeholderToken": "Your access credential"
+    },
+    "profile": {
+      "basicInfo": "Basic Info",
+      "security": "Security",
+      "changePwd": "Change Login Password",
+      "currentPwd": "Current Password",
+      "newPwd": "New Password",
+      "savePwd": "Save Password",
+      "username": "Username",
+      "email": "Email",
+      "phone": "Phone",
+      "authSource": "Account Source",
+      "local": "Local",
+      "pwdChanged": "Password Changed",
+      "pwdChangeFailed": "Change Failed",
+      "defaultUser": "User"
+    },
+    "resetPwd": {
+      "title": "Reset Password",
+      "desc": "Set a new password for \"{{name}}\"",
+      "ldapHint": "LDAP users must manage passwords in the LDAP directory. Local reset is not supported.",
+      "newPwd": "New Password",
+      "newPwdPlaceholder": "At least 6 characters",
+      "confirmPwd": "Confirm Password",
+      "confirmPlaceholder": "Enter the new password again",
+      "confirm": "Confirm Reset",
+      "success": "Password Reset",
+      "successDesc": "New password for user {{name}} is now active",
+      "failed": "Reset Failed"
     }
   },
   "logCenter": {

frontend/src/locales/zh-CN.json

@@ -7455,7 +7455,23 @@
       "loadFailed": "加载审计设置失败",
       "invalidRetentionDays": "请选择有效的保留天数",
       "noExpiredRecords": "，无超期记录"
-    }
+    },
+    "permCloudResource": "云资源",
+    "permAutomation": "自动化",
+    "permApproval": "审批",
+    "permAudit": "审计",
+    "roleCodeRequired": "请输入角色编码",
+    "confirmDeleteRoleDesc": "确认删除角色「{{name}}」吗？该操作不可恢复。",
+    "roleCount": "{{count}} 个角色",
+    "noRoleData": "暂无角色数据",
+    "permListCount": "权限列表 ({{count}} 项)",
+    "roleCodeLabel": "编码：{{code}}",
+    "testConnection": "验证",
+    "rootOu": "根 ({{dn}})",
+    "importSelected": "导入 ({{count}})",
+    "importAll": "导入全部 ({{count}})",
+    "editLdapUserDesc": "修改 {{uid}} 的属性",
+    "permEffectTrailing": "，修改后用户需重新登录生效。"
   },
   "aiops": {
     "title": "AIOps 智能",
@@ -8273,6 +8289,35 @@
       "credentialCopied": "凭证已复制",
       "saved": "我已保存",
       "placeholderToken": "你的访问凭证"
+    },
+    "profile": {
+      "basicInfo": "基本信息",
+      "security": "安全设置",
+      "changePwd": "修改登录密码",
+      "currentPwd": "当前密码",
+      "newPwd": "新密码",
+      "savePwd": "保存密码",
+      "username": "用户名",
+      "email": "邮箱",
+      "phone": "手机",
+      "authSource": "账号来源",
+      "local": "本地",
+      "pwdChanged": "密码已修改",
+      "pwdChangeFailed": "修改失败",
+      "defaultUser": "用户"
+    },
+    "resetPwd": {
+      "title": "重置密码",
+      "desc": "为「{{name}}」设置新密码",
+      "ldapHint": "LDAP 用户请在 LDAP 目录中管理密码，不支持本地重置。",
+      "newPwd": "新密码",
+      "newPwdPlaceholder": "至少 6 位",
+      "confirmPwd": "确认密码",
+      "confirmPlaceholder": "再次输入新密码",
+      "confirm": "确认重置",
+      "success": "密码已重置",
+      "successDesc": "用户 {{name}} 的新密码已生效",
+      "failed": "重置失败"
     }
   },
   "logCenter": {