Add /buddy feed command for companion interaction

Feature Request

Description

Currently the /buddy companion system supports pet and off sub-commands. It would be great to add a /buddy feed interaction to give the companion more depth and engagement.

Motivation

• The buddy system is delightful but interactions are limited to just petting
• Feeding would add another way to bond with your companion
• Could tie into mood states (hungry -> happy after feeding)
• Makes the companion feel more alive and interactive

Suggested Behavior

• /buddy feed — feed your buddy (animation + mood boost)
• Optional: different food types with different reactions
• Optional: buddy gets hungry over time if not fed, affecting its mood/expressions

Current Commands

• /buddy — show companion
• /buddy pet — pet companion (heart effect)
• /buddy off — hide companion

Environment

• Claude Code on Windows 11
• Buddy: Pickle (dragon species)