v0.2.0

feat: add pagination support for large card execution results

• Add _estimate_tokens helper function for rough token counting
• Enhance execute_card to detect large results and suggest pagination
• Add execute_card_paginated tool with server-side and client-side pagination fallback
• Implement token-based result trimming to stay within context limits
• Support configurable page sizes and token limits

v0.1.0

refactor: restructure as proper Python package with type-safe configu…