refactor: standardize view headings across all components

- Add consistent view heading IDs and structure
- Add consistent help buttons and back navigation
- Improve spacing and typography consistency

src/views/DeepLinkErrorView.vue

@@ -1,7 +1,15 @@
 <template>
   <!-- CONTENT -->
   <section id="Content" class="p-6 pb-24 max-w-3xl mx-auto">
-    <h1>Invalid Deep Link</h1>
+    <!-- Sub View Heading -->
+    <div id="SubViewHeading" class="flex gap-4 items-start mb-8">
+      <h1
+        class="grow text-rose-500 text-xl text-center font-semibold leading-tight"
+      >
+        Invalid Deep Link
+      </h1>
+    </div>
+
     <div class="error-details">
       <div class="error-message">
         <h3>Error Details</h3>
@@ -114,11 +122,6 @@ onMounted(() => {
 </script>
 
 <style scoped>
-h1 {
-  color: #ff4444;
-  margin-bottom: 24px;
-}
-
 h2,
 h3 {
   color: #333;