zap in context.md

CONTEXT.md

@@ -651,6 +651,27 @@ export function Post(/* ...props */) {
 }
 ```
 
+### Lightning Zaps (NIP-57)
+
+Implement zaps with a payment method fallback chain: **NWC → WebLN → Manual**. Always validate recipient lightning addresses (`lud16`/`lud06`) before creating zap requests.
+
+```tsx
+// Use unified wallet detection
+const { webln, activeNWC, preferredMethod } = useWallet();
+const { zap } = useZaps(target, webln, activeNWC, onSuccess);
+
+// Validate recipient can receive zaps
+if (!author.metadata?.lud16 && !author.metadata?.lud06) {
+  return null; // Hide zap button
+}
+```
+
+**Critical patterns:**
+- Detect WebLN only when needed (dialog open)
+- Show payment method indicator to users
+- Handle errors gracefully with specific messaging
+- Use `useZaps` hook for payment logic
+
 ## App Configuration
 
 The project includes an `AppProvider` that manages global application state including theme and relay configuration. The default configuration includes: