feat: narrow-pane sidebars and cross-account file picker in Pro shell

locales/en/common.json

@@ -1962,6 +1962,7 @@
     "delete_confirm": "Are you sure you want to delete this contact?",
     "local_mode": "Contacts are stored locally (server does not support JMAP Contacts)",
     "back_to_contacts": "Back to contacts",
+    "open_categories": "Open categories",
     "tabs": {
       "all": "All",
       "groups": "Groups"
@@ -2485,6 +2486,7 @@
     },
     "nav_prev": "Previous",
     "nav_next": "Next",
+    "nav_open_menu": "Open menu",
     "import": {
       "title": "Import Calendar",
       "tab_file": "File",
@@ -2729,6 +2731,8 @@
     "file": "File",
     "parent_directory": "Parent directory",
     "breadcrumb_root": "Home",
+    "other_accounts": "Other accounts",
+    "no_accounts": "No connected accounts.",
     "drop_files_here": "Drop files or folders here to upload",
     "uploading": "Uploading...",
     "upload_success": "{count, plural, one {1 file uploaded} other {# files uploaded}}",
@@ -2780,6 +2784,7 @@
     "undo_success": "Action undone",
     "undo_error": "Failed to undo",
     "toolbar": "File actions",
+    "open_folder_tree": "Open folder tree",
     "file_list": "Files and folders",
     "context_menu": "Actions",
     "settings_title": "File Settings",