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/market/components/DashboardOverview.vue

@@ -218,7 +218,7 @@
 import { computed, ref } from 'vue'
 import { useRouter } from 'vue-router'
 import { useMarketStore } from '../stores/market'
-import { useAuth } from '@/composables/useAuth'
+import { useAuth } from '@/composables/useAuthService'
 import { useMarket } from '../composables/useMarket'
 // import { useOrderEvents } from '@/composables/useOrderEvents' // TODO: Move to market module
 import { Button } from '@/components/ui/button'

src/modules/market/components/MerchantStore.vue

@@ -321,7 +321,7 @@ import {
 } from 'lucide-vue-next'
 import type { OrderStatus } from '@/stores/market'
 import { nostrmarketService } from '../services/nostrmarketService'
-import { auth } from '@/composables/useAuth'
+import { auth } from '@/composables/useAuthService'
 
 const router = useRouter()
 const marketStore = useMarketStore()

src/modules/market/components/OrderHistory.vue

@@ -247,7 +247,7 @@ import { useRouter } from 'vue-router'
 import { useMarketStore } from '../stores/market'
 // import { useOrderEvents } from '@/composables/useOrderEvents' // TODO: Move to market module
 import { injectService, SERVICE_TOKENS } from '@/core/di-container'
-import { auth } from '@/composables/useAuth'
+import { auth } from '@/composables/useAuthService'
 import { useLightningPayment } from '../composables/useLightningPayment'
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'

src/modules/market/components/PaymentRequestDialog.vue

@@ -98,6 +98,7 @@
 import { computed, ref, watch } from 'vue'
 import { toast } from 'vue-sonner'
 import QRCode from 'qrcode'
+import { useAuth } from '@/composables/useAuthService'
 import type { NostrmarketPaymentRequest } from '../services/nostrmarketService'
 import {
   Dialog,
@@ -125,6 +126,9 @@ const emit = defineEmits<{
   'payment-completed': [orderId: string]
 }>()
 
+// Auth
+const auth = useAuth()
+
 // Computed
 const lightningInvoice = computed(() => {
   if (!props.paymentRequest) return null
@@ -251,10 +255,6 @@ const payWithWallet = async () => {
     // Import the payment API
     const { payInvoiceWithWallet } = await import('@/lib/api/events')
     
-    // Get the current user's wallet info
-    const { useAuth } = await import('@/composables/useAuth')
-    const auth = useAuth()
-    
     if (!auth.currentUser.value?.wallets?.[0]?.id || !auth.currentUser.value?.wallets?.[0]?.adminkey) {
       toast.error('Please connect your wallet to pay')
       return

src/modules/market/composables/useMarket.ts

@@ -5,7 +5,7 @@ import { config } from '@/lib/config'
 import { nostrmarketService } from '../services/nostrmarketService'
 import { nip04 } from 'nostr-tools'
 import { useAsyncOperation } from '@/core/composables/useAsyncOperation'
-import { auth } from '@/composables/useAuth'
+import { auth } from '@/composables/useAuthService'
 
 // Nostr event kinds for market functionality
 const MARKET_EVENT_KINDS = {

src/modules/market/composables/usePaymentStatusChecker.ts

@@ -1,5 +1,5 @@
 import { ref } from 'vue'
-import { useAuth } from '@/composables/useAuth'
+import { useAuth } from '@/composables/useAuthService'
 import { useMarketStore } from '../stores/market'
 
 // Simplified bolt11 parser to extract payment hash

src/modules/market/services/nostrmarketService.ts

@@ -1,7 +1,7 @@
 import { finalizeEvent, type EventTemplate, nip04 } from 'nostr-tools'
 import { BaseService } from '@/core/base/BaseService'
 import type { Stall, Product, Order } from '@/stores/market'
-import { auth } from '@/composables/useAuth'
+import { auth } from '@/composables/useAuthService'
 
 export interface NostrmarketStall {
   id: string

src/modules/market/stores/market.ts

@@ -3,7 +3,7 @@ import { ref, computed, readonly, watch } from 'vue'
 import { invoiceService } from '@/core/services/invoiceService'
 import { paymentMonitor } from '../services/paymentMonitor'
 import { nostrmarketService } from '../services/nostrmarketService'
-import { useAuth } from '@/composables/useAuth'
+import { useAuth } from '@/composables/useAuthService'
 import { injectService, SERVICE_TOKENS } from '@/core/di-container'
 import type { LightningInvoice } from '@/core/services/invoiceService'
 

src/modules/market/views/CheckoutPage.vue

@@ -272,7 +272,7 @@ import { ref, computed, onMounted } from 'vue'
 import { useRoute } from 'vue-router'
 import { useMarketStore } from '@/stores/market'
 import { injectService, SERVICE_TOKENS } from '@/core/di-container'
-import { auth } from '@/composables/useAuth'
+import { auth } from '@/composables/useAuthService'
 import { 
   Card, 
   CardHeader,