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/space/Space.tsx

@@ -274,7 +274,13 @@ function SpaceHeader() {
             {joinRules?.join_rule !== JoinRule.Public && <Icon src={Icons.Lock} size="50" />}
           </Box>
           <Box shrink="No">
-            <IconButton aria-expanded={!!menuAnchor} aria-haspopup="menu" variant="Background" onClick={handleOpenMenu} aria-label="Space options">
+            <IconButton
+              aria-expanded={!!menuAnchor}
+              aria-haspopup="menu"
+              variant="Background"
+              onClick={handleOpenMenu}
+              aria-label="Space options"
+            >
               <Icon src={Icons.VerticalDots} size="200" />
             </IconButton>
           </Box>
@@ -433,7 +439,9 @@ export function Space() {
           return false;
         }
         const showRoomAnyway =
-          roomsWithUnreadSet.has(roomId) || roomId === selectedRoomId || callEmbed?.roomId === roomId;
+          roomsWithUnreadSet.has(roomId) ||
+          roomId === selectedRoomId ||
+          callEmbed?.roomId === roomId;
         return !showRoomAnyway;
       },
       [space.roomId, closedCategories, roomsWithUnreadSet, selectedRoomId, callEmbed]