Refactor authentication architecture to eliminate dual auth complexity

This major refactor consolidates the authentication system to use a single
source of truth, eliminating timing issues and architectural complexity
that was causing chat and payment functionality problems.

Key Changes:
• Remove old global useAuth composable and replace with useAuthService wrapper
• Update all 25+ files to use consistent auth pattern via dependency injection
• Eliminate dual auth detection workarounds from services (ChatService, PaymentService, etc.)
• Fix TypeScript errors and add proper Uint8Array conversion for Nostr private keys
• Consolidate auth state management to AuthService as single source of truth

Benefits:
• Resolves chat peer loading and message subscription timing issues
• Fixes wallet detection problems for Lightning payments
• Eliminates race conditions between global and injected auth
• Maintains API compatibility while improving architecture
• Reduces code complexity and improves maintainability

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/modules/events/composables/useTicketPurchase.ts

@@ -1,6 +1,6 @@
-import { ref, computed, onUnmounted, onMounted } from 'vue'
+import { ref, computed, onUnmounted } from 'vue'
 import { purchaseTicket, checkPaymentStatus } from '@/lib/api/events'
-import { useAuth } from '@/composables/useAuth'
+import { useAuth } from '@/composables/useAuthService'
 import { toast } from 'vue-sonner'
 import { useAsyncOperation } from '@/core/composables/useAsyncOperation'
 import { injectService, SERVICE_TOKENS } from '@/core/di-container'
@@ -24,9 +24,6 @@ export function useTicketPurchase() {
   const purchasedTicketId = ref<string | null>(null)
   const showTicketQR = ref(false)
   
-  // Wallet state (loaded asynchronously)
-  const userWallets = ref<any[]>([])
-  const hasWalletWithBalance = ref(false)
 
   // Computed properties
   const canPurchase = computed(() => isAuthenticated.value && currentUser.value)
@@ -38,30 +35,10 @@ export function useTicketPurchase() {
     }
   })
   
-  // Delegate to PaymentService for processing status
-  const isPayingWithWallet = computed(() => paymentService.isProcessingPayment.value) // computed ref
-  
-  // Load wallets asynchronously
-  async function loadWallets() {
-    try {
-      const wallets = await paymentService.getUserWalletsAsync()
-      userWallets.value = wallets
-      hasWalletWithBalance.value = await paymentService.hasWalletWithBalanceAsync()
-      console.log('Loaded wallets for ticket purchase:', {
-        count: wallets.length,
-        hasBalance: hasWalletWithBalance.value
-      })
-    } catch (error) {
-      console.error('Failed to load wallets:', error)
-      userWallets.value = []
-      hasWalletWithBalance.value = false
-    }
-  }
-  
-  // Load wallets on mount
-  onMounted(() => {
-    loadWallets()
-  })
+  // Delegate to PaymentService
+  const userWallets = computed(() => paymentService.userWallets)
+  const hasWalletWithBalance = computed(() => paymentService.hasWalletWithBalance)
+  const isPayingWithWallet = computed(() => paymentService.isProcessingPayment.value)
 
   // Generate QR code for Lightning payment - delegate to PaymentService
   async function generateQRCode(bolt11: string) {
@@ -241,7 +218,6 @@ export function useTicketPurchase() {
     handleOpenLightningWallet,
     resetPaymentState,
     cleanup,
-    generateTicketQRCode,
-    loadWallets
+    generateTicketQRCode
   }
 } 

src/modules/events/composables/useUserTickets.ts

@@ -2,7 +2,7 @@ import { computed } from 'vue'
 import { useAsyncState } from '@vueuse/core'
 import type { Ticket } from '@/lib/types/event'
 import { fetchUserTickets } from '@/lib/api/events'
-import { useAuth } from '@/composables/useAuth'
+import { useAuth } from '@/composables/useAuthService'
 
 interface GroupedTickets {
   eventId: string