Add auto-polls to settle disagreements between users

LLM analysis now detects when two users are in a genuine
disagreement. When detected, the bot creates a native Discord
poll with each user's position as an option.

- Disagreement detection added to LLM analysis tool schema
- Polls last 4 hours with 1 hour per-channel cooldown
- LLM extracts topic, both positions, and usernames
- Configurable via polls section in config.yaml

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

prompts/analysis.txt

@@ -36,4 +36,6 @@ If you notice something noteworthy about this user's communication style, behavi
 
 GAME DETECTION — If CHANNEL INFO is provided, identify which specific game the message is discussing. Set detected_game to the channel name that best matches (e.g. "gta-online", "warzone", "battlefield", "cod-zombies") using ONLY the channel names listed in the channel info. If the message isn't about a specific game or you're unsure, set detected_game to null.
 
+DISAGREEMENT DETECTION — Look at the recent channel context. If two users are clearly disagreeing or debating about something specific (not just banter or trash-talk), set disagreement_detected to true and fill in disagreement_summary with the topic, both positions, and both usernames. Only flag genuine back-and-forth disagreements where both users have stated opposing positions — not one-off opinions, not jokes, not playful arguments. The topic should be a short question (e.g. "Are snipers OP?"), and each side should be a concise position statement.
+
 Use the report_analysis tool to report your analysis of the TARGET MESSAGE only.