fix(handlers): await NostrSend calls throughout codebase

Update all NostrSend call sites to properly handle the async nature
of the function now that it returns Promise<void>.

Changes:
- handler.ts: Add async to sendResponse, await nostrSend calls
- debitManager.ts: Add logging for Kind 21002 response sending
- nostrMiddleware.ts: Update nostrSend signature
- tlvFilesStorageProcessor.ts: Update nostrSend signature
- webRTC/index.ts: Add async/await for nostrSend calls

This ensures Kind 21002 (ndebit) responses are properly sent to
wallet clients, fixing the "Debit request failed" issue in ShockWallet.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/nostrMiddleware.ts

@@ -105,7 +105,7 @@ export default (serverMethods: Types.ServerMethods, mainHandler: Main, nostrSett
 
     return {
         Stop: () => { mainHandler.adminManager.setNostrConnected(false); return nostr.Stop },
-        Send: (...args) => nostr.Send(...args),
+        Send: async (...args) => nostr.Send(...args),
         Ping: () => nostr.Ping(),
         Reset: (settings: NostrSettings) => nostr.Reset(settings)
     }

src/services/main/debitManager.ts

@@ -153,13 +153,14 @@ export class DebitManager {
     }
 
     notifyPaymentSuccess = (debitRes: NdebitSuccess, event: { pub: string, id: string, appId: string }) => {
+        this.logger("✅ [DEBIT REQUEST] Payment successful, sending OK response to", event.pub.slice(0, 16) + "...", "for event", event.id.slice(0, 16) + "...")
         this.sendDebitResponse(debitRes, event)
     }
 
     sendDebitResponse = (debitRes: NdebitFailure | NdebitSuccess, event: { pub: string, id: string, appId: string }) => {
+        this.logger("📤 [DEBIT RESPONSE] Sending Kind 21002 response:", JSON.stringify(debitRes), "to", event.pub.slice(0, 16) + "...")
         const e = newNdebitResponse(JSON.stringify(debitRes), event)
         this.storage.NostrSender().Send({ type: 'app', appId: event.appId }, { type: 'event', event: e, encrypt: { toPub: event.pub } })
-
     }
 
     payNdebitInvoice = async (event: NostrEvent, pointerdata: NdebitData): Promise<HandleNdebitRes> => {

src/services/nostr/handler.ts

@@ -132,12 +132,12 @@ const handleNostrSettings = (settings: NostrSettings) => {
         send(event)
     })
 } */
-const sendToNostr: NostrSend = (initiator, data, relays) => {
+const sendToNostr: NostrSend = async (initiator, data, relays) => {
     if (!subProcessHandler) {
         getLogger({ component: "nostrMiddleware" })(ERROR, "nostr was not initialized")
         return
     }
-    subProcessHandler.Send(initiator, data, relays)
+    await subProcessHandler.Send(initiator, data, relays)
 }
 
 send({ type: 'ready' })

src/services/storage/tlv/tlvFilesStorageProcessor.ts

@@ -126,7 +126,7 @@ class TlvFilesStorageProcessor {
                     throw new Error('Unknown metric type: ' + t)
             }
         })
-        this.wrtc.attachNostrSend((initiator: SendInitiator, data: SendData, relays?: string[] | undefined) => {
+        this.wrtc.attachNostrSend(async (initiator: SendInitiator, data: SendData, relays?: string[] | undefined) => {
             this.sendResponse({
                 success: true,
                 type: 'nostrSend',

src/services/webRTC/index.ts

@@ -27,11 +27,11 @@ export default class webRTC {
     attachNostrSend(f: NostrSend) {
         this._nostrSend = f
     }
-    private nostrSend: NostrSend = (initiator: SendInitiator, data: SendData, relays?: string[] | undefined) => {
+    private nostrSend: NostrSend = async (initiator: SendInitiator, data: SendData, relays?: string[] | undefined) => {
         if (!this._nostrSend) {
             throw new Error("No nostrSend attached")
         }
-        this._nostrSend(initiator, data, relays)
+        await this._nostrSend(initiator, data, relays)
     }
 
     private sendCandidate = (u: WebRtcUserInfo, candidate: string) => {