add locking bytecode to template

src/controllers/invitation-controller.ts

@@ -136,12 +136,7 @@ export class InvitationController extends EventEmitter {
       inputIdentifier?: string;
     }>,
   ): Promise<TrackedInvitation> {
-    // Ensure each input has an inputIdentifier (sync server requires it)
-    const inputsWithIds = inputs.map((input, index) => ({
-      ...input,
-      inputIdentifier: input.inputIdentifier ?? `senderInput_${Date.now()}_${index}`,
-    }));
-    return this.flowManager.appendToInvitation(invitationId, { inputs: inputsWithIds });
+    return this.flowManager.appendToInvitation(invitationId, { inputs });
   }
 
   /**
@@ -158,12 +153,7 @@ export class InvitationController extends EventEmitter {
       roleIdentifier?: string;
     }>,
   ): Promise<TrackedInvitation> {
-    // Ensure each output has an outputIdentifier (sync server may require it)
-    const outputsWithIds = outputs.map((output, index) => ({
-      ...output,
-      outputIdentifier: output.outputIdentifier ?? `changeOutput_${Date.now()}_${index}`,
-    }));
-    return this.flowManager.appendToInvitation(invitationId, { outputs: outputsWithIds });
+    return this.flowManager.appendToInvitation(invitationId, { outputs });
   }
 
   /**

src/tui/screens/ActionWizard.tsx

@@ -276,7 +276,7 @@ export function ActionWizardScreen(): React.ReactElement {
    * Create invitation and add variables.
    */
   const createInvitationWithVariables = useCallback(async () => {
-    if (!templateIdentifier || !actionIdentifier || !roleIdentifier) return;
+    if (!templateIdentifier || !actionIdentifier || !roleIdentifier || !template) return;
 
     setIsProcessing(true);
     setStatus('Creating invitation...');
@@ -305,6 +305,25 @@ export function ActionWizardScreen(): React.ReactElement {
         inv = updated.invitation;
       }
 
+      // Add template-required outputs for the current role
+      // This is critical - the template defines which outputs the initiator must create
+      const action = template.actions?.[actionIdentifier];
+      const transaction = action?.transaction ? template.transactions?.[action.transaction] : null;
+      
+      if (transaction?.outputs && transaction.outputs.length > 0) {
+        setStatus('Adding required outputs...');
+        
+        // Add each required output with its identifier
+        // The engine will automatically generate the locking bytecode based on the template
+        const outputsToAdd = transaction.outputs.map((outputId: string) => ({
+          outputIdentifier: outputId,
+          roleIdentifier: roleIdentifier,
+        }));
+        
+        const updated = await invitationController.addOutputs(invId, outputsToAdd);
+        inv = updated.invitation;
+      }
+
       setInvitation(inv);
 
       // Check if next step is inputs
@@ -323,7 +342,7 @@ export function ActionWizardScreen(): React.ReactElement {
     } finally {
       setIsProcessing(false);
     }
-  }, [templateIdentifier, actionIdentifier, roleIdentifier, variables, invitationController, steps, currentStep, showError, setStatus, loadAvailableUtxos]);
+  }, [templateIdentifier, actionIdentifier, roleIdentifier, template, variables, invitationController, steps, currentStep, showError, setStatus, loadAvailableUtxos]);
 
   /**
    * Add selected inputs and change output to invitation.