Locale keys for new features

Adds strings for select mode, bulk delete, breadcrumbs, spinner
loading label, tag chip, submitting state (de/en) and removes the
now-unused recording bar keys.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

i18n/locales/en.json

@@ -1,5 +1,6 @@
 {
   "common": {
+    "loading": "Loading…",
     "save": "Save",
     "saving": "Saving…",
     "cancel": "Cancel",
@@ -34,6 +35,7 @@
   "nav": {
     "users": "Users",
     "admin": "Admin",
+    "thread": "Thread",
     "profile": "Profile",
     "settings": "Settings",
     "search": "Search…",
@@ -64,7 +66,14 @@
     "loading": "Loading uploads…",
     "emptyFiltered": "No uploads match the active filters.",
     "empty": "No uploads yet. Be the first!",
-    "count": "{n} uploads"
+    "count": "{n} uploads",
+    "select": "Select",
+    "selected": "{n} selected",
+    "selectAll": "All on this page",
+    "deleteConfirmTitle": "Delete uploads?",
+    "deleteConfirmDesc": "{n} uploads will be permanently deleted.",
+    "deletedCount": "{n} uploads deleted",
+    "deleteFailed": "Delete failed"
   },
   "filters": {
     "filter": "Filter",
@@ -94,6 +103,7 @@
     "loading": "Loading comments…",
     "placeholder": "Write a comment… {'@'} to mention, drop files here",
     "submit": "Comment",
+    "submitting": "Sending…",
     "loginToComment": "to comment.",
     "attachFiles": "Attach files",
     "removeAttachment": "Remove attachment",
@@ -103,8 +113,6 @@
     "mentionAria": "Mention user",
     "recordStart": "Record voice message",
     "recordStop": "Stop recording",
-    "recording": "Recording…",
-    "recordHint": "Click the microphone to stop",
     "voiceMessage": "Voice message",
     "maxAttachments": "Max {n} attachments per comment",
     "fileTooLarge": "{name}: File is too large (max. 200 MB)",
@@ -128,6 +136,7 @@
     "deleteFailed": "Delete failed",
     "editTags": "Edit tags",
     "addTag": "Add tag…",
+    "addTagButton": "Add tag",
     "removeTag": "Remove tag {tag}",
     "tagsSaveFailed": "Tags could not be saved",
     "subscribeOn": "Enable notifications for this thread",