Feature Request: Visual Evolution & Multi-Buddy Collection (Gacha) System

[fiorastudio]

Summary

To increase long-term engagement and leverage our existing XP/leveling system, we should implement visual evolution and a multi-buddy collection/reroll system.

Proposed Features

1. Visual Evolution

• Multi-Stage Sprites: Buddies should change visually at key level milestones (e.g., Level 15, 30, 50).
• Animation Upgrades: Unlock new idle animations or special 'prestige' effects (glows, particles) as they grow.
• Evolution Logic: Tie visual changes to the existing XP curve.

2. Buddy Collection & Gacha System

• Multiple Slots: Allow users to maintain a 'roster' of buddies (initially 1-3 slots, expandable).
• Reroll / Gacha: Introduce a way to 'scout' for new companions without releasing the current one.
• Themed/Seasonal Pulls: Future support for limited-time species or rarity modifiers.

Motivation

• Encourages continued use of the CLI through a sense of progression.
• Leverages the 21-species roster and rarity system.
• Directly addresses community demand for more interactive and less static companions.

Inspired by: anthropics/claude-code#49750