chore(send-poll): polish review nits

- Align bridge validation wording with the Python layer ("At least two poll options are required").
- Note in whatsapp.py that the validation rules are intentionally duplicated in main.go and must stay in sync.
- Soften test_too_few_options assertion to tolerate wording changes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Ortes

whatsapp-bridge/main.go

@@ -1505,7 +1505,7 @@ func startRESTServer(client *whatsmeow.Client, messageStore *MessageStore, port
 			return
 		}
 		if len(req.Options) < 2 {
-			http.Error(w, "At least two options are required", http.StatusBadRequest)
+			http.Error(w, "At least two poll options are required", http.StatusBadRequest)
 			return
 		}
 		if len(req.Options) > 12 {

whatsapp-mcp-server/tests/test_send_poll.py

@@ -19,7 +19,7 @@ def test_missing_name(self):
     def test_too_few_options(self):
         ok, msg = send_poll("123@s.whatsapp.net", "Q?", ["only"])
         assert not ok
-        assert "two poll options" in msg
+        assert "two" in msg.lower()
 
     def test_too_many_options(self):
         ok, msg = send_poll("123@s.whatsapp.net", "Q?", [str(i) for i in range(13)])

whatsapp-mcp-server/whatsapp.py

@@ -963,6 +963,9 @@ def send_poll(
     options: list[str],
     selectable_option_count: int = 1,
 ) -> tuple[bool, str]:
+    # Validation is intentionally duplicated in whatsapp-bridge/main.go's
+    # /api/send/poll handler so each layer is safe at its boundary. Keep the
+    # two in sync if you change the rules here.
     try:
         if not recipient:
             return False, "Recipient must be provided"
@@ -979,8 +982,11 @@ def send_poll(
         if any(not opt or not opt.strip() for opt in options):
             return False, "Poll options must not be empty"
 
-        if selectable_option_count < 1 or selectable_option_count > len(options):
-            return False, "selectable_option_count must be between 1 and len(options)"
+        # whatsmeow semantics: 0 = multi-select with no limit, 1 = single-select,
+        # N (1 < N <= len(options)) = multi-select up to N. Out-of-range values
+        # are silently coerced to 0 by the library, so reject them upfront.
+        if selectable_option_count < 0 or selectable_option_count > len(options):
+            return False, "selectable_option_count must be 0 (unlimited) or between 1 and len(options)"
 
         url = f"{WHATSAPP_API_BASE_URL}/send/poll"
         payload = {