feat: Complete Spanish, French, Portuguese, Chinese localization and add German/Italian support

- Updated all Spanish (es) translation files with comprehensive translations for tracking, AI, family, insights, children, and settings pages
- Updated French (fr), Portuguese (pt), and Chinese (zh) translations to match English structure
- Added German (de) and Italian (it) language support with complete translation files
- Fixed medicine tracker route from /track/medication to /track/medicine
- Updated i18n config to support 7 languages: en, es, fr, pt, zh, de, it
- All tracking pages now fully localized: sleep, feeding, diaper, medicine, activity
- AI assistant interface fully translated with thinking messages and suggested questions
- Family management and insights pages now support all languages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

maternal-web/locales/zh/onboarding.json

@@ -1,99 +1,99 @@
 {
   "welcome": {
-    "title": "Welcome to Maternal",
-    "subtitle": "Your AI-powered child care assistant",
-    "description": "Track activities, get AI-powered insights, and coordinate with your family—all in one place.",
-    "getStarted": "Get Started",
-    "skip": "Skip"
+    "title": "欢迎来到Maternal",
+    "subtitle": "您的AI驱动儿童护理助手",
+    "description": "跟踪活动、获得AI驱动的洞察，并与您的家人协调——一切尽在一处。",
+    "getStarted": "开始使用",
+    "skip": "跳过"
   },
   "language": {
-    "title": "Choose Your Language",
-    "subtitle": "Select your preferred language",
-    "description": "You can change this later in settings"
+    "title": "选择您的语言",
+    "subtitle": "选择您的首选语言",
+    "description": "您可以稍后在设置中更改"
   },
   "measurements": {
-    "title": "Measurement Units",
-    "subtitle": "Choose your preferred unit system",
-    "description": "Select the measurement system you're most comfortable with. You can change this later in settings.",
+    "title": "测量单位",
+    "subtitle": "选择您的首选单位系统",
+    "description": "选择您最熟悉的测量系统。您可以稍后在设置中更改。",
     "metric": {
-      "title": "Metric",
-      "description": "Kilograms, centimeters, Celsius, milliliters"
+      "title": "公制",
+      "description": "千克、厘米、摄氏度、毫升"
     },
     "imperial": {
-      "title": "Imperial",
-      "description": "Pounds, inches, Fahrenheit, ounces"
+      "title": "英制",
+      "description": "磅、英寸、华氏度、盎司"
     }
   },
   "profile": {
-    "title": "Create Your Profile",
-    "subtitle": "Tell us about yourself",
-    "name": "Your Name",
-    "email": "Email Address",
-    "password": "Password",
-    "confirmPassword": "Confirm Password",
-    "relation": "Relation to Child",
+    "title": "创建您的档案",
+    "subtitle": "告诉我们关于您的信息",
+    "name": "您的姓名",
+    "email": "邮箱地址",
+    "password": "密码",
+    "confirmPassword": "确认密码",
+    "relation": "与孩子的关系",
     "relations": {
-      "mother": "Mother",
-      "father": "Father",
-      "guardian": "Guardian",
-      "caregiver": "Caregiver",
-      "other": "Other"
+      "mother": "母亲",
+      "father": "父亲",
+      "guardian": "监护人",
+      "caregiver": "照顾者",
+      "other": "其他"
     }
   },
   "child": {
-    "title": "Add Your Child",
-    "subtitle": "Let's start with your first child",
-    "name": "Child's Name",
-    "dateOfBirth": "Date of Birth",
-    "gender": "Gender",
+    "title": "添加您的孩子",
+    "subtitle": "让我们从您的第一个孩子开始",
+    "name": "孩子的姓名",
+    "dateOfBirth": "出生日期",
+    "gender": "性别",
     "genders": {
-      "male": "Male",
-      "female": "Female",
-      "other": "Other",
-      "preferNotToSay": "Prefer not to say"
+      "male": "男",
+      "female": "女",
+      "other": "其他",
+      "preferNotToSay": "不愿透露"
     },
-    "weight": "Current Weight",
-    "height": "Current Height",
-    "addAnother": "Add Another Child",
-    "skipForNow": "Skip for Now"
+    "weight": "当前体重",
+    "height": "当前身高",
+    "addAnother": "添加另一个孩子",
+    "skipForNow": "暂时跳过"
   },
   "family": {
-    "title": "Invite Family Members",
-    "subtitle": "Coordinate with your family",
-    "description": "Invite family members to view and track activities together. They'll receive an email invitation.",
-    "email": "Family Member's Email",
-    "role": "Role",
+    "title": "邀请家庭成员",
+    "subtitle": "与您的家人协调",
+    "description": "邀请家庭成员一起查看和跟踪活动。他们将收到邮件邀请。",
+    "email": "家庭成员的邮箱",
+    "role": "角色",
     "roles": {
-      "parent": "Parent",
-      "caregiver": "Caregiver",
-      "viewer": "Viewer"
+      "parent": "父母",
+      "caregiver": "照顾者",
+      "viewer": "查看者"
     },
-    "addMember": "Add Member",
-    "inviteLater": "I'll Invite Later"
+    "addMember": "添加成员",
+    "inviteLater": "稍后邀请"
   },
   "notifications": {
-    "title": "Enable Notifications",
-    "subtitle": "Stay informed",
-    "description": "Get reminders for feedings, sleep times, and important milestones.",
-    "push": "Push Notifications",
-    "email": "Email Notifications",
-    "enable": "Enable Notifications",
-    "skipForNow": "Skip for Now"
+    "title": "启用通知",
+    "subtitle": "保持了解",
+    "description": "获取喂养、睡眠时间和重要里程碑的提醒。",
+    "push": "推送通知",
+    "email": "邮件通知",
+    "enable": "启用通知",
+    "skipForNow": "暂时跳过"
   },
   "complete": {
-    "title": "All Set!",
-    "subtitle": "You're ready to start tracking",
-    "description": "Start tracking your child's activities and get personalized AI-powered insights.",
-    "startTracking": "Start Tracking",
-    "exploreDashboard": "Explore Dashboard"
+    "title": "全部设置完成！",
+    "subtitle": "您已准备好开始跟踪",
+    "description": "开始跟踪您孩子的活动并获得个性化的AI驱动洞察。",
+    "startTracking": "开始跟踪",
+    "exploreDashboard": "探索仪表板"
   },
   "navigation": {
-    "next": "Next",
-    "back": "Back",
-    "skip": "Skip",
-    "finish": "Finish"
+    "next": "下一步",
+    "back": "返回",
+    "skip": "跳过",
+    "finish": "完成"
   },
   "progress": {
-    "step": "Step {{current}} of {{total}}"
+    "step": "第{{current}}步，共{{total}}步"
   }
-}
+}