features: customizable reply + optional :3 suffix, with Mod Menu UI & persistence
Add REPLY_TEXT with validation for cat sounds (mer*, m+rr+p+, m+ro+w+, ny+a+~*); default meow
New command: /automeow say <text> to change reply (validated)
Mod Menu: add Reply text field (validated) and Append :3 to reply toggle
Persist replyText and appendFace in config/automeow.json; load at startup, save on change/exit
Allow MY_MESSAGES_REQUIRED = 0 to disable the “my messages” requirement; Mod Menu slider now 0..10