fix(relay): auto-reconnect on Telegram AUTH_KEY_DUPLICATED and fix IranIntl handle (#539)

- On AUTH_KEY_DUPLICATED (406), disconnect client and set to null so
  next poll cycle reconnects fresh — self-heals after competing client dies
- Fix IranIntl → iranintltv (correct Telegram channel handle)

data/telegram-channels.json

@@ -86,7 +86,7 @@
         "maxMessages": 25
       },
       {
-        "handle": "IranIntl",
+        "handle": "iranintltv",
         "label": "Iran International",
         "topic": "politics",
         "tier": 2,

scripts/ais-relay.cjs

@@ -290,6 +290,12 @@ async function pollTelegramOnce() {
       const em = e?.message || String(e);
       telegramState.lastError = `poll ${handle} failed: ${em}`;
       console.warn('[Relay] Telegram poll error:', telegramState.lastError);
+      if (/AUTH_KEY_DUPLICATED/.test(em)) {
+        console.warn('[Relay] Telegram session conflict — destroying client, will reconnect next cycle');
+        try { telegramState.client?.disconnect(); } catch {}
+        telegramState.client = null;
+        break;
+      }
     }
   }