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/create-space/CreateSpaceModal.tsx

@@ -58,7 +58,9 @@ function CreateSpaceModal({ state }: CreateSpaceModalProps) {
                   }}
                 >
                   <Box grow="Yes">
-                    <Text as="h2" size="H4">New Space</Text>
+                    <Text as="h2" size="H4">
+                      New Space
+                    </Text>
                   </Box>
                   <Box shrink="No">
                     <IconButton size="300" radii="300" onClick={closeDialog} aria-label="Close">