fix(files): аватары и баннеры доступны авторизованным пользователям

Аватар нельзя было показать в списке друзей: файл без комнаты был доступен
только загрузившему. Добавлено назначение файла (`files.purpose`: attachment |
avatar | banner, миграция 00006): аватары и баннеры отдаются любому
авторизованному пользователю, вложения по-прежнему проверяются по правам
комнаты, а непривязанные загрузки остаются приватными.

web/src/i18n/locales/en.json

@@ -56,7 +56,10 @@
     "message.edit_window_expired": "This message can no longer be edited: more than 24 hours passed.",
     "file.too_large": "The file exceeds the allowed size.",
     "request.bad": "Malformed request.",
-    "file.not_found": "File not found."
+    "file.not_found": "File not found.",
+    "invite.expired": "This invite has expired.",
+    "invite.exhausted": "This invite has no uses left.",
+    "user.not_found": "No user with that username was found."
   },
   "theme": {
     "switchToLight": "Light theme",
@@ -172,11 +175,8 @@
       "limitReached": "You have reached the server limit — remove one of your servers first."
     },
     "empty": {
-      "title": "No servers yet",
-      "body": "Join the instance main server or create your own.",
-      "joinMain": "Join the main server",
-      "joining": "Joining…",
-      "noMain": "This instance has no main server configured — create your own."
+      "title": "You have no servers yet",
+      "body": "Create your own server or join one with an invite."
     },
     "leave": "Leave server",
     "leaveConfirm": "Leave the server “{{name}}”?",
@@ -223,6 +223,74 @@
     "slowmode": "slowmode {{seconds}}s",
     "leaveHint": "You can leave the server in server settings → “Danger zone”."
   },
+  "friends": {
+    "rail": "Friends",
+    "title": "Friends",
+    "sidebarLabel": "Friends and direct messages",
+    "sidebarHint": "Direct messages live here — they are not in the server rail.",
+    "dmSection": "Direct messages",
+    "dmEmpty": "No direct messages yet.",
+    "friendsSection": "Friends",
+    "friendsEmpty": "Your friend list is empty.",
+    "open": "Open a conversation with {{name}}",
+    "empty": {
+      "title": "Add friends to start talking",
+      "body": "Find someone by username and send a friend request — a direct conversation appears once it is accepted.",
+      "search": "Find friends"
+    },
+    "search": {
+      "title": "Friend search",
+      "close": "Close search",
+      "label": "Search by username",
+      "placeholder": "Enter a username",
+      "hint": "Type at least 2 characters.",
+      "empty": "Nobody found.",
+      "add": "Add friend",
+      "adding": "Sending…",
+      "requested": "Request sent",
+      "friend": "Already friends",
+      "message": "Message"
+    },
+    "requests": {
+      "incoming": "Incoming requests",
+      "outgoing": "Outgoing requests",
+      "accept": "Accept",
+      "decline": "Decline",
+      "cancel": "Cancel"
+    },
+    "list": {
+      "label": "Friend list",
+      "message": "Message",
+      "more": "Actions: {{name}}",
+      "menu": "Actions for {{name}}",
+      "remove": "Remove friend",
+      "block": "Block"
+    },
+    "lastSeen": {
+      "label": "Last seen",
+      "online": "Online now",
+      "unknown": "Offline for a while",
+      "at": "Last seen: {{time}}"
+    },
+    "dm": {
+      "unknown": "Recipient",
+      "notFound": {
+        "title": "Conversation unavailable",
+        "body": "This direct conversation was not found: it may be deleted or closed to you."
+      }
+    }
+  },
+  "invites": {
+    "title": "Join with an invite",
+    "hint": "Paste a code or a link like https://<domain>/invite/<code>.",
+    "label": "Invite code or link",
+    "placeholder": "e.g. ab12cd or https://example.com/invite/ab12cd",
+    "invalid": "Could not recognise the invite code.",
+    "join": "Join",
+    "joining": "Joining…",
+    "members": "Members: {{count}}",
+    "alreadyMember": "You are already on this server"
+  },
   "chat": {
     "log": "Message log of {{name}}",
     "loadMore": "Load more",
@@ -236,7 +304,9 @@
     "unknownAuthor": "unknown",
     "start": {
       "title": "This is the start of #{{name}}",
-      "body": "There are no messages here yet. Say something — everyone in the channel will see it."
+      "body": "There are no messages here yet. Say something — everyone in the channel will see it.",
+      "directTitle": "This is the beginning of your conversation with {{name}}",
+      "directBody": "No messages here yet. Say hello first."
     },
     "message": {
       "by": "Message from {{name}} in {{channel}}",
@@ -290,7 +360,9 @@
       "tooLarge": "File “{{name}}” exceeds the {{limit}} limit",
       "rateLimited": "Too many messages. You can send again in {{seconds}} s.",
       "denied": "You are not allowed to send messages in this channel.",
-      "readOnly": "This channel is read-only for you."
+      "readOnly": "This channel is read-only for you.",
+      "directLabel": "Message to {{name}}",
+      "directPlaceholder": "Message {{name}}"
     },
     "typing_one": "{{names}} is typing…",
     "typing_few": "{{names}} are typing…",
@@ -315,7 +387,8 @@
     "spoiler": {
       "show": "Reveal spoiler",
       "hide": "Hide spoiler"
-    }
+    },
+    "logDirect": "Direct conversation with {{name}}"
   },
   "user": {
     "panelLabel": "User panel",