Add random mnemonic generation in seed input screen

src/tui/screens/SeedInput.tsx

@@ -19,7 +19,7 @@ import path from 'path';
 import { createMnemonicFile } from '../../cli/mnemonic.js';
 import { getMnemonicsDir } from '../../utils/paths.js';
 import { BCHMnemonicURL } from '../../utils/bch-mnemonic-url.js';
-import { encodeBip39Mnemonic } from '@bitauth/libauth';
+import { encodeBip39Mnemonic, generateBip39Mnemonic } from '@bitauth/libauth';
 
 /**
  * Status message type.
@@ -41,7 +41,7 @@ interface MnemonicFileEntry {
  * Focus sections the user can tab between.
  * When saved wallets exist the file list is shown first.
  */
-type FocusSection = 'files' | 'input' | 'saveCheckbox' | 'button';
+type FocusSection = 'files' | 'input' | 'saveCheckbox' | 'generateRandomSeed' | 'button';
 
 /**
  * Reads mnemonic-* files from ~/.config/xo-cli/mnemonics/ (same as xo-cli),
@@ -117,8 +117,8 @@ export function SeedInputScreen(): React.ReactElement {
    * The ordered list of focusable sections (files section only when entries exist).
    */
   const focusSections: FocusSection[] = mnemonicFiles.length > 0
-    ? ['files', 'input', 'saveCheckbox', 'button']
-    : ['input', 'saveCheckbox', 'button'];
+    ? ['files', 'input', 'generateRandomSeed', 'saveCheckbox', 'button']
+    : ['input', 'generateRandomSeed', 'saveCheckbox', 'button'];
 
   /**
    * Shows a status message with the given type.
@@ -202,7 +202,7 @@ export function SeedInputScreen(): React.ReactElement {
   }, [mnemonicFiles, doInitialize]);
 
   // Keyboard navigation
-  useBlockableInput((_input, key) => {
+  useBlockableInput((input, key) => {
     if (isSubmitting) return;
 
     // Tab / Shift-Tab to cycle focus sections
@@ -219,7 +219,7 @@ export function SeedInputScreen(): React.ReactElement {
 
     // Space or Enter toggles "save mnemonic" when that row is focused
     if (focusedSection === 'saveCheckbox') {
-      if (_input === ' ' || key.return) {
+      if (input === ' ' || key.return) {
         setSaveMnemonicChecked((v) => !v);
         return;
       }
@@ -241,6 +241,18 @@ export function SeedInputScreen(): React.ReactElement {
       }
     }
 
+    // Ctrl-R generates a random seed phrase and fills it in the input
+    if (key.ctrl && input === 'r') {
+      setSeedPhrase(generateBip39Mnemonic());
+      return;
+    }
+
+    // If pressing enter while the generate random seed section is focused, generate a random seed and fill it in the input
+    if (key.return && focusedSection === 'generateRandomSeed') {
+      setSeedPhrase(generateBip39Mnemonic());
+      return;
+    }
+
     // Enter on button submits manual seed
     if (key.return && focusedSection === 'button') {
       handleSubmit();
@@ -358,6 +370,19 @@ export function SeedInputScreen(): React.ReactElement {
           />
         </Box>
 
+        {/* Generate random seed phrase and fill in the input */}
+        <Box marginTop={1}>
+          <Box
+            paddingX={1}
+            paddingY={0}
+            backgroundColor={focusedSection === 'generateRandomSeed' ? colors.focus : colors.bgSelected}
+          >
+            <Text color={focusedSection === 'generateRandomSeed' ? colors.bg : colors.text} bold>Generate Random Seed</Text>
+          </Box>
+
+          <Text color={colors.textMuted}> (Ctrl-R)</Text>
+        </Box>
+
         {/* Save mnemonic checkbox (manual entry only; applies on Continue) */}
         <Box
           marginTop={1}