feat: add Spire Summary Tab showing guardian progress, floor map, and climb button

src/app/page.tsx

@@ -51,6 +51,7 @@ const PrestigeTab = lazy(() => import('@/components/game/tabs').then(module => (
 const EquipmentTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.EquipmentTab })));
 const GolemancyTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.GolemancyTab })));
 const GuardianPactsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.GuardianPactsTab })));
+const SpireSummaryTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.SpireSummaryTab })));
 
 const TabLoadingFallback = () => <div className="p-4 text-center text-gray-400">Loading...</div>;
 
@@ -247,6 +248,7 @@ export default function ManaLoopGame() {
                   <TabsTrigger value="equipment" className="text-xs px-2 py-1">⚔️ Equipment</TabsTrigger>
                   <TabsTrigger value="golemancy" className="text-xs px-2 py-1">🗿 Golemancy</TabsTrigger>
                   <TabsTrigger value="pacts" className="text-xs px-2 py-1">📜 Pacts</TabsTrigger>
+                  <TabsTrigger value="spire" className="text-xs px-2 py-1">🏔️ Spire</TabsTrigger>
                 </TabsList>
 
                 <TabsContent value="spells">
@@ -332,6 +334,14 @@ export default function ManaLoopGame() {
                     </Suspense>
                   </ErrorBoundary>
                 </TabsContent>
+
+                <TabsContent value="spire">
+                  <ErrorBoundary fallback={<div className="p-4 text-red-400">spire tab failed to load.</div>}>
+                    <Suspense fallback={<TabLoadingFallback />}>
+                      <SpireSummaryTab />
+                    </Suspense>
+                  </ErrorBoundary>
+                </TabsContent>
               </Tabs>
             </div>
           </main>