fix: move slutty prompt to personalities/ dir, match reply chance

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

config.yaml

@@ -146,9 +146,9 @@ modes:
   slutty:
     label: "Slutty"
     description: "Shamelessly flirty and full of innuendos"
-    prompt_file: "chat_slutty.txt"
+    prompt_file: "personalities/chat_slutty.txt"
     proactive_replies: true
-    reply_chance: 0.25
+    reply_chance: 0.60
     moderation: relaxed
     relaxed_thresholds:
       warning_threshold: 0.85