feat: add profile pages (favorites, messages, my-listings, settings) and update docs for zero-knowledge chat schema

locales/en.json

@@ -224,5 +224,66 @@
     "confirmSaved": "I have saved my UUID",
     "registrationFailed": "Registration failed",
     "loginRequired": "Please log in to continue"
+  },
+  "favorites": {
+    "title": "Favorites",
+    "subtitle": "Your saved listings",
+    "empty": "No favorites",
+    "emptyHint": "Click the heart icon on a listing to save it.",
+    "browse": "Browse listings"
+  },
+  "myListings": {
+    "title": "My Listings",
+    "subtitle": "Manage your listings",
+    "empty": "No listings",
+    "emptyHint": "You haven't created any listings yet.",
+    "create": "Create listing",
+    "loginRequired": "Login required",
+    "loginHint": "Log in to see your listings.",
+    "login": "Login",
+    "status": {
+      "draft": "Draft",
+      "archived": "Archived"
+    }
+  },
+  "messages": {
+    "title": "Messages",
+    "subtitle": "Your conversations",
+    "empty": "No messages",
+    "emptyHint": "Contact a seller to start a conversation.",
+    "browse": "Browse listings",
+    "loginRequired": "Login required",
+    "loginHint": "Log in to see your messages.",
+    "login": "Login",
+    "unknownListing": "Unknown listing",
+    "today": "Today",
+    "yesterday": "Yesterday",
+    "daysAgo": "{{days}} days ago"
+  },
+  "settings": {
+    "title": "Settings",
+    "appearance": "Appearance",
+    "theme": "Theme",
+    "themeLight": "Light",
+    "themeDark": "Dark",
+    "themeSystem": "System",
+    "language": "Language",
+    "account": "Account",
+    "userId": "User ID",
+    "logout": "Logout",
+    "login": "Login",
+    "notLoggedIn": "You are not logged in.",
+    "loggedOut": "Logged out successfully",
+    "data": "Data",
+    "favorites": "Favorites",
+    "favoritesHint": "Delete locally saved favorites",
+    "searchHistory": "Search history",
+    "searchHistoryHint": "Delete saved search filters",
+    "clear": "Clear",
+    "confirmClearFavorites": "Delete all favorites?",
+    "confirmClearSearch": "Delete search history?",
+    "favoritesCleared": "Favorites deleted",
+    "searchCleared": "Search history deleted",
+    "about": "About"
   }
 }