feat: add redirect channel to topic drift messages

Topic drift reminders and nudges now direct users to a specific
channel (configurable via redirect_channel). Both static templates
and LLM-generated redirects include the clickable channel mention.

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

cogs/sentiment/topic_drift.py

@@ -16,20 +16,20 @@ _PROMPTS_DIR = Path(__file__).resolve().parent.parent.parent / "prompts"
 _TOPIC_REDIRECT_PROMPT = (_PROMPTS_DIR / "topic_redirect.txt").read_text(encoding="utf-8")
 
 DEFAULT_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? 🎮",
+    "Hey {username}, this is a gaming server 🎮 — take the personal stuff to {channel}.",
+    "{username}, sir this is a gaming channel. {channel} is right there.",
+    "Hey {username}, I don't remember this being a therapy session. Take it to {channel}. 🎮",
+    "{username}, I'm gonna need you to take that energy to {channel}. This channel has a vibe to protect.",
+    "Not to be dramatic {username}, but this is wildly off-topic. {channel} exists for a reason. 🎮",
 ]
 
 DEFAULT_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. 🎮",
+    "{username}, we've been over this. Gaming. Channel. {channel} for the rest. 🎮",
+    "{username}, you keep drifting off-topic like it's a speedrun category. {channel}. Now.",
+    "Babe. {username}. The gaming channel. We talked about this. Go to {channel}. 😭",
+    "{username}, I will not ask again (I will definitely ask again). {channel} for off-topic. 🎮",
+    "{username}, at this point I'm keeping score. That's off-topic strike {count}. {channel} is waiting.",
+    "Look, {username}, I love the enthusiasm but this ain't the channel for it. {channel}. 🎮",
 ]
 
 # Per-channel deque of recent LLM-generated redirect messages (for variety)
@@ -57,7 +57,7 @@ def _strip_brackets(text: str) -> str:
 
 async def _generate_llm_redirect(
     bot, message: discord.Message, topic_category: str,
-    topic_reasoning: str, count: int,
+    topic_reasoning: str, count: int, redirect_mention: str = "",
 ) -> str | None:
     """Ask the LLM chat model to generate a topic redirect message."""
     recent = _get_recent_redirects(message.channel.id)
@@ -70,6 +70,8 @@ async def _generate_llm_redirect(
         f"Off-topic strike count: {count}\n"
         f"What they said: {message.content[:300]}"
     )
+    if redirect_mention:
+        user_prompt += f"\nRedirect channel: {redirect_mention}"
 
     messages = [{"role": "user", "content": user_prompt}]
 
@@ -96,7 +98,7 @@ async def _generate_llm_redirect(
     return response if response else None
 
 
-def _static_fallback(bot, message: discord.Message, count: int) -> str:
+def _static_fallback(bot, message: discord.Message, count: int, redirect_mention: str = "") -> str:
     """Pick a static template message as fallback."""
     messages_config = bot.config.get("messages", {})
     if count >= 2:
@@ -109,6 +111,7 @@ def _static_fallback(bot, message: discord.Message, count: int) -> str:
             pool = [pool]
     return random.choice(pool).format(
         username=message.author.display_name, count=count,
+        channel=redirect_mention or "the right channel",
     )
 
 
@@ -138,18 +141,26 @@ async def handle_topic_drift(
     count = tracker.record_off_topic(user_id)
     action_type = "topic_nudge" if count >= 2 else "topic_remind"
 
+    # Resolve redirect channel mention
+    redirect_mention = ""
+    redirect_name = config.get("redirect_channel")
+    if redirect_name and message.guild:
+        ch = discord.utils.get(message.guild.text_channels, name=redirect_name)
+        if ch:
+            redirect_mention = ch.mention
+
     # Generate the redirect message
     use_llm = config.get("use_llm", False)
     redirect_text = None
     if use_llm:
         redirect_text = await _generate_llm_redirect(
-            bot, message, topic_category, topic_reasoning, count,
+            bot, message, topic_category, topic_reasoning, count, redirect_mention,
         )
 
     if redirect_text:
         _record_redirect(message.channel.id, redirect_text)
     else:
-        redirect_text = _static_fallback(bot, message, count)
+        redirect_text = _static_fallback(bot, message, count, redirect_mention)
 
     await message.channel.send(redirect_text)