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/components/join-address-prompt/JoinAddressPrompt.tsx

@@ -80,7 +80,9 @@ export function JoinAddressPrompt({ onOpen, onCancel }: JoinAddressProps) {
               size="500"
             >
               <Box grow="Yes">
-                <Text as="h2" size="H4">Join with Address</Text>
+                <Text as="h2" size="H4">
+                  Join with Address
+                </Text>
               </Box>
               <IconButton size="300" onClick={onCancel} radii="300" aria-label="Cancel">
                 <Icon src={Icons.Cross} />