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/DeviceVerification.tsx

@@ -259,9 +259,16 @@ export function DeviceVerification({ request, onExit }: DeviceVerificationProps)
           <Dialog variant="Surface">
             <Header style={DialogHeaderStyles} variant="Surface" size="500">
               <Box grow="Yes">
-                <Text as="h2" size="H4">Device Verification</Text>
+                <Text as="h2" size="H4">
+                  Device Verification
+                </Text>
               </Box>
-              <IconButton size="300" radii="300" onClick={handleCancel} aria-label="Cancel verification">
+              <IconButton
+                size="300"
+                radii="300"
+                onClick={handleCancel}
+                aria-label="Cancel verification"
+              >
                 <Icon src={Icons.Cross} />
               </IconButton>
             </Header>