wyr/riddle: add model attribution + fix truncated WYR options

wyr:
- Reject options that end on a dangling word (but/and/or/with/never etc.)
  so truncated sentences like 'but never' return None and retry
- Add 'via Llama 3.2 3B (abliterated)' credit to the poll message

riddle:
- Add 'via Llama 3.2 3B (abliterated)' credit to the riddle message

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

matrixbot/commands.py

@@ -1692,10 +1692,13 @@ async def _generate_wyr() -> dict | None:
                 parsed = json.loads(text)
                 a = parsed.get("option_a", "").strip()
                 b = parsed.get("option_b", "").strip()
-                # Hard cap: truncate options that are too long
+                _HANGING = {"but", "and", "or", "with", "for", "in", "on", "at",
+                            "the", "a", "an", "never", "always", "no", "not", "to",
+                            "of", "by", "from", "that", "which", "who", "be", "have"}
                 if a and b:
-                    a = " ".join(a.split()[:10])
-                    b = " ".join(b.split()[:10])
+                    # Reject if either option ends on a dangling word (truncation artifact)
+                    if a.split()[-1].lower() in _HANGING or b.split()[-1].lower() in _HANGING:
+                        return None
                     q = f"Would you rather {a.rstrip('.')} OR {b.rstrip('.')}?"
                     return {"question": q, "option_a": a, "option_b": b}
     except Exception as e:
@@ -1724,7 +1727,8 @@ async def cmd_wyr(client: AsyncClient, room_id: str, sender: str, args: str):
         f'<em>{wyr["question"]}</em><br><br>'
         f'🅰️ <strong>{wyr["option_a"]}</strong><br>'
         f'🅱️ <strong>{wyr["option_b"]}</strong><br><br>'
-        f'<em>React with 🅰️ or 🅱️ — results in 30 seconds!</em>'
+        f'<em>React with 🅰️ or 🅱️ — results in 30 seconds!</em><br>'
+        f'<sup><em>via {_model_label(BALL_MODEL)}</em></sup>'
     )
     resp = await send_html(client, room_id, plain, html)
 
@@ -1871,7 +1875,8 @@ async def cmd_riddle(client: AsyncClient, room_id: str, sender: str, args: str):
     html = (
         f'<font color="#14b8a6"><strong>🧩 Riddle!</strong></font><br>'
         f'<blockquote>{riddle}</blockquote>'
-        f'<em>Type your answer in chat — 60 seconds on the clock!</em>'
+        f'<em>Type your answer in chat — 60 seconds on the clock!</em><br>'
+        f'<sup><em>via {_model_label(BALL_MODEL)}</em></sup>'
     )
     await send_html(client, room_id, plain, html)