fix: support forwarded media with captions (text from caption, ignore media-only)

app/bot.py

@@ -109,10 +109,14 @@ async def user_start(update: Update, context):
 
 
 async def handle_user_message(update: Update, context):
-    """Receive text → TTS → reply voice → forward to admin."""
+    """Receive text/caption → TTS → reply voice → forward to admin."""
     global admin_chat_id
     user = update.effective_user
-    text = update.message.text
+    text = update.message.text or update.message.caption
+
+    if not text:
+        # Media without caption — silently ignore
+        return
 
     logger.info(f"User {user.full_name} (id={user.id}): {text[:80]}")
 
@@ -183,7 +187,7 @@ def build_admin_app() -> Application:
 def build_user_app() -> Application:
     app = Application.builder().token(USER_TOKEN).build()
     app.add_handler(CommandHandler('start', user_start))
-    app.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, handle_user_message))
+    app.add_handler(MessageHandler((filters.TEXT | filters.CAPTION) & ~filters.COMMAND, handle_user_message))
     return app