Enhance content management and user interaction features

- Introduced a new content source toggle in the profile and app header to switch between IndeeHub and TopDoc films.
- Updated the content fetching logic to dynamically load content based on the selected source.
- Enhanced the seeding process to include a combined catalog of IndeeHub and TopDoc films, ensuring diverse content availability.
- Improved user interaction by preventing duplicate reactions and ensuring a smoother voting experience across comments and content.
- Added support for Amber login (NIP-55) for Android users, integrating it into the existing authentication flow.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/AppHeader.vue

@@ -164,6 +164,16 @@
                   </svg>
                   <span>My Library</span>
                 </button>
+
+                <!-- Content Source Toggle -->
+                <button @click="handleSourceToggle" class="profile-menu-item flex items-center gap-3 px-4 py-2.5 w-full text-left">
+                  <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 7h12m0 0l-4-4m4 4l-4 4m0 6H4m0 0l4 4m-4-4l4-4" />
+                  </svg>
+                  <span class="flex-1">{{ contentSourceStore.activeSource === 'indeehub' ? 'IndeeHub Films' : 'TopDoc Films' }}</span>
+                  <span class="text-[10px] text-white/40 uppercase tracking-wider">Switch</span>
+                </button>
+
                 <div class="border-t border-white/10 my-1"></div>
                 <button @click="handleLogout" class="profile-menu-item flex items-center gap-3 px-4 py-2.5 text-red-400 w-full text-left">
                   <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -215,6 +225,8 @@ import { useAuth } from '../composables/useAuth'
 import { useAccounts } from '../composables/useAccounts'
 import { accountManager } from '../lib/accounts'
 import { useContentDiscovery } from '../composables/useContentDiscovery'
+import { useContentSourceStore } from '../stores/contentSource'
+import { useContentStore } from '../stores/content'
 
 type Persona = { name: string; nsec: string; pubkey: string }
 
@@ -257,6 +269,15 @@ const {
   setAlgorithm: _setAlgorithm,
 } = useContentDiscovery()
 
+const contentSourceStore = useContentSourceStore()
+const contentStore = useContentStore()
+
+/** Toggle between IndeeHub and TopDocFilms catalogs, then reload content */
+function handleSourceToggle() {
+  contentSourceStore.toggle()
+  contentStore.fetchContent()
+}
+
 const dropdownOpen = ref(false)
 const personaMenuOpen = ref(false)
 const algosMenuOpen = ref(false)