Trim prompts for gpt-4o-mini, remove disagreement detection

Slim down chat_roast.txt — remove anti-repetition rules that were
compensating for the local model (gpt-4o-mini handles this natively).
Remove disagreement detection from analysis prompt, tool schema, and
sentiment handler. Saves ~200 tokens per analysis call.

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

prompts/analysis.txt

@@ -36,6 +36,4 @@ 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.