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/features/settings/notifications/KeywordMessages.tsx

@@ -120,7 +120,14 @@ function KeywordCross({ pushRule }: PushRulesProps) {
 
   const removing = removeState.status === AsyncStatus.Loading;
   return (
-    <IconButton onClick={remove} size="300" radii="Pill" variant="Secondary" disabled={removing} aria-label="Remove keyword">
+    <IconButton
+      onClick={remove}
+      size="300"
+      radii="Pill"
+      variant="Secondary"
+      disabled={removing}
+      aria-label="Remove keyword"
+    >
       {removing ? <Spinner size="100" /> : <Icon src={Icons.Cross} size="100" />}
     </IconButton>
   );