refactor: make the whole playoff banner clickable instead of a Bracket pill

Wrap the trophy + title + meta group in the bracket link itself so the
whole Stanley Cup Playoffs element doubles as the entry point. Cleaner
banner, one fewer control to style.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/templates/index.html

@@ -17,7 +17,7 @@
         <span class="header-title">NHL Scoreboard</span>
     </header>
     <section id="playoff-banner" class="playoff-banner hidden" aria-hidden="true">
-        <div class="banner-main">
+        <a class="banner-main" href="/bracket" aria-label="View the playoff bracket">
             <svg class="banner-trophy" viewBox="0 0 32 40" aria-hidden="true">
                 <defs>
                     <linearGradient id="cup-gold" x1="0" x2="1" y1="0" y2="1">
@@ -43,10 +43,7 @@
                     <span class="meta-game7 hidden"></span>
                 </div>
             </div>
-        </div>
-        <div class="banner-actions">
-            <a class="banner-bracket-link" href="/bracket">Bracket</a>
-        </div>
+        </a>
     </section>
     <main>
         <section id="pinned-section" class="section pinned-section hidden">