fix(deadline-banner): true full-width in breakout mode

Skip container-custom py-8 wrapper for deadline_banner so the colored
bar spans the viewport. Banner ships its own inner container-custom
for content positioning.

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

src/lib/components/ContentRows.svelte

@@ -146,9 +146,13 @@
                     ? 'bg-wald-50'
                     : '[background:var(--color-container-breakout)]'}"
                 >
-                  <div class="container-custom py-8">
+                  {#if rowBlockType === 'deadline_banner'}
                     {@render blockContent()}
-                  </div>
+                  {:else}
+                    <div class="container-custom py-8">
+                      {@render blockContent()}
+                    </div>
+                  {/if}
                 </div>
               </div>
             {:else}