ideas: add Feedback button to header

site/src/components/IdeasPage.svelte

@@ -140,6 +140,12 @@
 <div class="max-w-2xl mx-auto px-4 py-8">
   <div class="flex items-center justify-between mb-6">
     <h1 class="text-2xl font-bold text-white">Ideas</h1>
+    <div class="flex items-center gap-2">
+      <a
+        href="/feedback/"
+        class="px-4 py-2 rounded-lg text-sm font-medium transition-colors"
+        style="border: 1px solid var(--border-sub); color: var(--text-4)"
+      >💬 Feedback</a>
       <button
         on:click={() => { showForm = !showForm; formError = ''; }}
         class="px-4 py-2 rounded-lg text-sm font-medium transition-colors"
@@ -148,6 +154,7 @@
         {showForm ? 'Cancel' : '+ Submit an idea'}
       </button>
     </div>
+  </div>
 
   {#if showForm}
     <div class="rounded-xl border p-4 mb-6" style="background: var(--bg-card); border-color: var(--border)">