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/SharedPhotoView.vue

@@ -39,10 +39,28 @@
   <QuickNav />
   <!-- CONTENT -->
   <section id="Content" class="p-6 pb-24 max-w-3xl mx-auto">
-    <!-- Heading -->
-    <h1 id="ViewHeading" class="text-4xl text-center font-light pt-4 mb-8">
-      Image
-    </h1>
+    <!-- Sub View Heading -->
+    <div id="SubViewHeading" class="flex gap-4 items-start mb-8">
+      <h1 class="grow text-xl text-center font-semibold leading-tight">
+        Image
+      </h1>
+
+      <!-- Back -->
+      <a
+        class="order-first text-lg text-center leading-none p-1"
+        @click="$router.go(-1)"
+      >
+        <font-awesome icon="chevron-left" class="block text-center w-[1em]" />
+      </a>
+
+      <!-- Help button -->
+      <router-link
+        :to="{ name: 'help' }"
+        class="block ms-auto text-sm text-center text-white bg-gradient-to-b from-blue-400 to-blue-700 shadow-[inset_0_-1px_0_0_rgba(0,0,0,0.5)] p-1.5 rounded-full"
+      >
+        <font-awesome icon="question" class="block text-center w-[1em]" />
+      </router-link>
+    </div>
     <div v-if="imageBlob">
       <div v-if="uploading" class="text-center mb-4">
         <font-awesome icon="spinner" class="fa-spin-pulse" />