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/composables/useAccounts.ts

@@ -1,6 +1,6 @@
 import { ref, computed, onUnmounted } from 'vue'
 import { Accounts } from 'applesauce-accounts'
-import { accountManager } from '../lib/accounts'
+import { accountManager, AmberClipboardSigner, AmberClipboardAccount } from '../lib/accounts'
 import { TEST_PERSONAS, TASTEMAKER_PERSONAS } from '../data/testPersonas'
 import type { Subscription } from 'rxjs'
 
@@ -101,6 +101,35 @@ export function useAccounts() {
     }
   }
 
+  /**
+   * Check if Amber signer is supported on this platform (Android + clipboard)
+   */
+  const isAmberSupported = computed(() => !!AmberClipboardSigner.SUPPORTED)
+
+  /**
+   * Login with Amber (NIP-55 Android Signer).
+   * Uses the AmberClipboardSigner to request the pubkey via Android intents.
+   * The signer is retained for future event signing (comments, reactions, etc.)
+   */
+  async function loginWithAmber() {
+    isLoggingIn.value = true
+    loginError.value = null
+    try {
+      const signer = new AmberClipboardSigner()
+      const pubkey = await signer.getPublicKey()
+      const account = new AmberClipboardAccount(pubkey, signer)
+      accountManager.addAccount(account)
+      accountManager.setActive(account)
+      return pubkey
+    } catch (err: any) {
+      loginError.value = err.message || 'Amber login failed'
+      console.error('Amber login error:', err)
+      throw err
+    } finally {
+      isLoggingIn.value = false
+    }
+  }
+
   /**
    * Logout current account
    */
@@ -142,8 +171,12 @@ export function useAccounts() {
     loginWithExtension,
     loginWithPersona,
     loginWithPrivateKey,
+    loginWithAmber,
     logout,
 
+    // Platform checks
+    isAmberSupported,
+
     // Personas for dev UI
     testPersonas,
     tastemakerPersonas,