feat: generate topic drift redirects via LLM with full conversation context

Replace static random templates with LLM-generated redirect messages that
reference what the user actually said and why it's off-topic. Sass escalates
with higher strike counts. Falls back to static templates if LLM fails or
use_llm is disabled in config.

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

config.yaml

@@ -29,6 +29,7 @@ game_channels:
 
 topic_drift:
   enabled: true
+  use_llm: true  # Generate redirect messages via LLM instead of static templates
   ignored_channels: ["general"]  # Channel names or IDs to skip topic drift monitoring
   remind_cooldown_minutes: 10  # Don't remind same user more than once per this window
   escalation_count: 3  # After this many reminds, DM the server owner
@@ -48,8 +49,19 @@ messages:
   warning: "Easy there, {username}. The Breehavior Monitor is watching. \U0001F440"
   mute_title: "\U0001F6A8 BREEHAVIOR ALERT \U0001F6A8"
   mute_description: "{username} has been placed in timeout for {duration}.\n\nReason: Sustained elevated drama levels detected.\nDrama Score: {score}/1.0\nCategories: {categories}\n\nCool down and come back when you've resolved your skill issues."
-  topic_remind: "Hey {username}, this is a gaming server \U0001F3AE — maybe take the personal stuff to DMs?"
-  topic_nudge: "{username}, we've chatted about this before — let's keep it to gaming talk in here. Personal drama belongs in DMs."
+  topic_reminds:
+    - "Hey {username}, this is a gaming server 🎮 — maybe take the personal stuff to DMs?"
+    - "{username}, sir this is a gaming channel."
+    - "Hey {username}, I don't remember this being a therapy session. Gaming talk, please. 🎮"
+    - "{username}, I'm gonna need you to take that energy to DMs. This channel has a vibe to protect."
+    - "Not to be dramatic {username}, but this is wildly off-topic. Back to gaming? 🎮"
+  topic_nudges:
+    - "{username}, we've been over this. Gaming. Channel. Please. 🎮"
+    - "{username}, you keep drifting off-topic like it's a speedrun category. Reel it in."
+    - "Babe. {username}. The gaming channel. We talked about this. 😭"
+    - "{username}, I will not ask again (I will definitely ask again). Stay on topic. 🎮"
+    - "{username}, at this point I'm keeping score. That's off-topic strike {count}. Gaming talk only!"
+    - "Look, {username}, I love the enthusiasm but this ain't the channel for it. Back to games. 🎮"
   topic_owner_dm: "Heads up: {username} keeps going off-topic with personal drama in #{channel}. They've been reminded {count} times. Might need a word."
   channel_redirect: "Hey {username}, that sounds like {game} talk — head over to {channel} for that!"