feat: fix evil mode race conditions, expand moods and PFP detection

bipolar_mode.py:
- Replace unsafe globals.EVIL_MODE temporary overrides with
  force_evil_context parameter to fix async race conditions (3 sites)

moods.py:
- Add 6 new evil mood emojis: bored, manic, jealous, melancholic,
  playful_cruel, contemptuous
- Refactor rotate_dm_mood() to skip when evil mode active (evil mode
  has its own independent 2-hour rotation timer)

persona_dialogue.py:
- Same force_evil_context race condition fix (2 sites)
- Fix over-aggressive response cleanup that stripped common words
  (YES/NO/HIGH) — now uses targeted regex for structural markers only
- Update evil mood multipliers to match new mood set

profile_picture_context:
- Expand PFP detection regex for broader coverage (appearance questions,
  opinion queries, selection/change questions)
- Add plugin.json metadata file

cat-plugins/profile_picture_context/plugin.json

@@ -0,0 +1,10 @@
+{
+  "name": "Profile Picture Context",
+  "description": "Injects profile picture description only when user asks about it using regex pattern matching",
+  "author_name": "Miku Bot Team",
+  "author_url": "",
+  "plugin_url": "",
+  "tags": "profile, picture, context, regex",
+  "thumb": "",
+  "version": "1.0.0"
+}