Auto-set no_dispense (#173)

When sending BTC to an address that belongs to the active wallet,
automatically set no_dispense=true to prevent accidentally triggering
dispensers at the destination address.

- Add no_dispense option to SendOptions interface
- Pass no_dispense parameter to compose API
- Detect own-address BTC sends in composer context

Author: droplister

src/pages/compose/send/form.tsx

@@ -6,6 +6,7 @@ import { AmountWithMaxInput } from "@/components/ui/inputs/amount-with-max-input
 import { DestinationsInput } from "@/components/ui/inputs/destinations-input";
 import { MemoInput } from "@/components/ui/inputs/memo-input";
 import { useComposer } from "@/contexts/composer-context";
+import { useWallet } from "@/contexts/wallet-context";
 import { useAssetDetails } from "@/hooks/useAssetDetails";
 import { validateQuantity } from "@/utils/validation/amount";
 import type { SendOptions } from "@/utils/blockchain/counterparty/compose";
@@ -26,6 +27,7 @@ export function SendForm({
 }: SendFormProps): ReactElement {
   // Get everything from composer context
   const { activeAddress, settings, showHelpText, feeRate } = useComposer<SendOptions>();
+  const { activeWallet } = useWallet();
   const enableMPMA = settings?.enableMPMA ?? false;
 
   // Data fetching hooks
@@ -87,22 +89,31 @@ export function SendForm({
     if (amount) {
       formData.set("quantity", amount);
     }
-    
+
+    const asset = initialAsset || initialFormData?.asset || "BTC";
+
     // Add all destinations to form data
     if (destinations.length > 1) {
       // For MPMA, pass destinations as comma-separated list
       formData.set("destinations", destinations.map(d => d.address).join(","));
       formData.delete("destination"); // Remove single destination field
     } else {
       // For single send, use the first destination
-      formData.set("destination", destinations[0].address);
+      const destination = destinations[0].address;
+      formData.set("destination", destination);
+
+      // Prevent triggering own dispensers when sending BTC to self
+      const isOwnAddress = activeWallet?.addresses.some(a => a.address === destination);
+      if (asset === "BTC" && isOwnAddress) {
+        formData.set("no_dispense", "true");
+      }
     }
-    
+
     // Add memo to form data
     if (memo) {
       formData.set("memo", memo);
     }
-    
+
     formAction(formData);
   };
 

src/utils/blockchain/counterparty/compose.ts

@@ -200,6 +200,7 @@ export interface SendOptions extends BaseComposeOptions {
   quantity: number;
   memo?: string;
   memo_is_hex?: boolean;
+  no_dispense?: boolean;
 }
 
 export interface SweepOptions extends BaseComposeOptions {
@@ -837,6 +838,7 @@ export async function composeSend(options: SendOptions): Promise<ApiResponse> {
     quantity,
     memo,
     memo_is_hex,
+    no_dispense,
     sat_per_vbyte,
     max_fee,
     encoding,
@@ -847,6 +849,7 @@ export async function composeSend(options: SendOptions): Promise<ApiResponse> {
     quantity: quantity.toString(),
     ...(memo !== undefined ? { memo } : {}),
     ...(memo_is_hex !== undefined ? { memo_is_hex: memo_is_hex.toString() } : {}),
+    ...(no_dispense !== undefined ? { no_dispense: no_dispense.toString() } : {}),
     ...(max_fee !== undefined && { max_fee: max_fee.toString() }),
   };
   return composeTransaction('send', paramsObj, sourceAddress, sat_per_vbyte, encoding);

src/utils/blockchain/counterparty/normalize.ts

@@ -46,6 +46,7 @@ const NORMALIZATION_CONFIG: Record<string, {
   send: {
     quantityFields: ['quantity'],
     assetFields: { quantity: 'asset' },
+    booleanFields: ['no_dispense'],
     memoConfig: { type: 'boolean', field: 'memo_is_hex' }
   },
   order: {