chore: prettier format all files, brotli, Sentry release tagging, CI gates

Prettier: auto-formatted 103 files to fix baseline. Prettier check in CI
  is now a hard gate (removed continue-on-error).

Brotli: installed libnginx-mod-http-brotli-filter/static. Enabled in nginx
  with brotli_static on for pre-compressed assets and comp_level 6.

Sentry releases: deploy script now exports VITE_APP_VERSION=<git-short-sha>
  before building so each Sentry release maps to an exact commit.
  CI also passes github.sha as VITE_APP_VERSION.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/pages/client/sidebar/SpaceTabs.tsx

@@ -522,7 +522,13 @@ function OpenedSpaceFolder({ folder, onClose, children }: OpenedSpaceFolderProps
     >
       <SidebarFolderDropTarget ref={aboveTargetRef} position="Top" />
       <SidebarAvatar size="300">
-        <IconButton data-id={folder.id} size="300" variant="Background" onClick={onClose} aria-label="Close folder">
+        <IconButton
+          data-id={folder.id}
+          size="300"
+          variant="Background"
+          onClick={onClose}
+          aria-label="Close folder"
+        >
           <Icon size="400" src={Icons.ChevronTop} filled />
         </IconButton>
       </SidebarAvatar>