fix password fields not clearing after validation error

When pasting an invalid token, the old value stayed in the input
field. Pasting a new token appended to the old one instead of
replacing it, causing repeated validation failures.

Add clearOnError: true to all 8 password prompts across setup.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

setup/channels/discord.ts

@@ -242,6 +242,7 @@ async function collectDiscordToken(): Promise<string> {
   const answer = ensureAnswer(
     await p.password({
       message: 'Paste your bot token',
+      clearOnError: true,
       validate: (v) => {
         const t = (v ?? '').trim();
         if (!t) return 'Token is required';

setup/channels/imessage.ts

@@ -250,6 +250,7 @@ async function collectRemoteCreds(): Promise<RemoteCreds> {
   const keyAnswer = ensureAnswer(
     await p.password({
       message: 'Photon API key',
+      clearOnError: true,
       validate: (v) => ((v ?? '').trim() ? undefined : 'API key is required'),
     }),
   );

setup/channels/slack.ts

@@ -154,6 +154,7 @@ async function collectBotToken(): Promise<string> {
   const answer = ensureAnswer(
     await p.password({
       message: 'Paste your Slack bot token',
+      clearOnError: true,
       validate: (v) => {
         const t = (v ?? '').trim();
         if (!t) return 'Token is required';
@@ -175,6 +176,7 @@ async function collectSigningSecret(): Promise<string> {
   const answer = ensureAnswer(
     await p.password({
       message: 'Paste your Slack signing secret',
+      clearOnError: true,
       validate: (v) => {
         const t = (v ?? '').trim();
         if (!t) return 'Signing secret is required';

setup/channels/teams.ts

@@ -276,6 +276,7 @@ async function stepClientSecret(args: {
     const answer = ensureAnswer(
       await p.password({
         message: 'Paste the client secret Value',
+        clearOnError: true,
         validate: validateWithHelpEscape((v) => {
           const t = (v ?? '').trim();
           if (!t) return 'Required';

setup/channels/telegram.ts

@@ -150,6 +150,7 @@ async function collectTelegramToken(): Promise<string> {
   const answer = ensureAnswer(
     await p.password({
       message: 'Paste your bot token',
+      clearOnError: true,
       validate: (v) => {
         if (!v || !v.trim()) return "Token is required";
         if (!/^[0-9]+:[A-Za-z0-9_-]{35,}$/.test(v.trim())) {