Fix sats output

src/tui/screens/ActionWizard.tsx

@@ -250,6 +250,13 @@ export function ActionWizardScreen(): React.ReactElement {
 
     // Handle step-specific logic
     if (stepType === 'variables') {
+      // Validate that all required variables have values
+      const emptyVars = variables.filter(v => !v.value || v.value.trim() === '');
+      if (emptyVars.length > 0) {
+        showError(`Please enter values for: ${emptyVars.map(v => v.name).join(', ')}`);
+        return;
+      }
+      
       // Create invitation and add variables
       await createInvitationWithVariables();
       return;
@@ -476,18 +483,30 @@ export function ActionWizardScreen(): React.ReactElement {
     });
   }, []);
 
+  // Check if TextInput should have exclusive focus (variables step with content focus)
+  const textInputHasFocus = currentStepData?.type === 'variables' && focusArea === 'content';
+
   // Handle keyboard navigation
   useInput((input, key) => {
+    // When TextInput has focus, only handle Tab to navigate away
+    if (textInputHasFocus) {
+      if (key.tab) {
+        // Move to next variable or to buttons
+        if (focusedInput < variables.length - 1) {
+          setFocusedInput(prev => prev + 1);
+        } else {
+          setFocusArea('buttons');
+          setFocusedButton('next');
+        }
+      }
+      // Let TextInput handle all other input
+      return;
+    }
+
     // Tab to switch between content and buttons
     if (key.tab) {
       if (focusArea === 'content') {
         // Handle tab based on current step type
-        if (currentStepData?.type === 'variables' && variables.length > 0) {
-          if (focusedInput < variables.length - 1) {
-            setFocusedInput(prev => prev + 1);
-            return;
-          }
-        }
         if (currentStepData?.type === 'inputs' && availableUtxos.length > 0) {
           if (selectedUtxoIndex < availableUtxos.length - 1) {
             setSelectedUtxoIndex(prev => prev + 1);