feat(login): add phone and Google login page with i18n

Add complete login flow with phone verification and country picker.
Add login-related translations for en-US, zh-CN and th-TH locales.
Add country calling codes constants and selection utility function.
Register Vant UI component type definitions for TypeScript.
Update development environment authentication token.

src/i18n/modules/common/en-US.ts

@@ -7,6 +7,34 @@ export default {
   errors: {
     network: "Network error. Please try again later.",
   },
+  login: {
+    method: {
+      google: "Sign in with Google",
+      phone: "Phone + Code",
+    },
+    fields: {
+      country: "Country/Code",
+      phone: "Phone",
+      code: "Code",
+    },
+    placeholders: {
+      selectCountry: "Select country code",
+      phone: "Enter phone number",
+      code: "Enter verification code",
+    },
+    dividersText: "Or",
+    actions: {
+      sendCode: "Send code",
+      login: "Sign in",
+    },
+    errors: {
+      missingPhone: "Please enter your phone number",
+      missingCode: "Please enter the verification code",
+    },
+    tips: {
+      smsApiMissing: "SMS sending API is not connected",
+    },
+  },
   state: {
     empty: "No data",
     loading: "Loading...",

src/i18n/modules/common/th-TH.ts

@@ -7,6 +7,34 @@ export default {
   errors: {
     network: "เครือข่ายผิดพลาด โปรดลองอีกครั้งในภายหลัง",
   },
+  login: {
+    method: {
+      google: "เข้าสู่ระบบด้วย Google",
+      phone: "โทรศัพท์ + รหัส",
+    },
+    fields: {
+      country: "ประเทศ/รหัส",
+      phone: "โทรศัพท์",
+      code: "รหัสยืนยัน",
+    },
+    placeholders: {
+      selectCountry: "เลือกรหัสประเทศ",
+      phone: "กรอกหมายเลขโทรศัพท์",
+      code: "กรอกรหัสยืนยัน",
+    },
+    dividersText: "หรือ",
+    actions: {
+      sendCode: "ส่งรหัส",
+      login: "เข้าสู่ระบบ",
+    },
+    errors: {
+      missingPhone: "กรอกหมายเลขโทรศัพท์",
+      missingCode: "กรอกรหัสยืนยัน",
+    },
+    tips: {
+      smsApiMissing: "ยังไม่ได้เชื่อมต่อ API สำหรับส่ง SMS",
+    },
+  },
   state: {
     empty: "ไม่มีข้อมูล",
     loading: "กำลังโหลด...",

src/i18n/modules/common/zh-CN.ts

@@ -7,6 +7,34 @@ export default {
   errors: {
     network: "网络异常，请稍后重试",
   },
+  login: {
+    method: {
+      google: "谷歌账号登录",
+      phone: "手机号验证码登录",
+    },
+    fields: {
+      country: "国家/区号",
+      phone: "手机号",
+      code: "验证码",
+    },
+    placeholders: {
+      selectCountry: "请选择国家/区号",
+      phone: "请输入手机号",
+      code: "请输入验证码",
+    },
+    dividersText: "或",
+    actions: {
+      sendCode: "获取验证码",
+      login: "登录",
+    },
+    errors: {
+      missingPhone: "请输入手机号",
+      missingCode: "请输入验证码",
+    },
+    tips: {
+      smsApiMissing: "验证码发送接口未接入",
+    },
+  },
   state: {
     empty: "暂无数据",
     loading: "加载中...",