Added stats page

src/App.svelte

@@ -6,6 +6,7 @@
   import Resume from './routes/Resume.svelte';
   import Settings from './routes/Settings.svelte';
   import Today from './routes/Today.svelte';
+  import Stats from './routes/Stats.svelte';
 
   let ready = $state(false);
 
@@ -54,11 +55,13 @@
     <Settings />
   {:else if view === 'today'}
     <Today />
+  {:else if view === 'stats'}
+    <Stats />
   {:else}
     <Resume />
   {/if}
 
-  <nav>
+  <nav class:with-stats={view === 'stats'}>
     <button
       type="button"
       class:sel={view === 'resume'}
@@ -80,6 +83,9 @@
       aria-current={view === 'settings'}
       onclick={() => go('settings')}>Réglages</button
     >
+    {#if view === 'stats'}
+      <button type="button" class="sel" disabled={dayState.importing} aria-current="page" onclick={() => go('stats')}>Stats</button>
+    {/if}
   </nav>
 {/if}
 
@@ -135,4 +141,6 @@
     background: var(--accent);
     color: var(--accent-fg);
   }
+  nav.with-stats { grid-template-columns: repeat(4, 1fr); }
+  nav.with-stats button { padding: 0 4px; font-size: 0.75rem; min-width: 0; }
 </style>