Launch HN: Skillsync (YC W26) – AI chat sessions made portable across agents

Skillsync is a YC W26 startup that enables users to seamlessly transfer AI coding sessions between different agents (like Claude Code, Cursor, and others) without losing context or having to re-explain their work. The tool operates locally-first with no vendor lock-in, allowing developers to switch between AI coding agents mid-session while maintaining full conversation history and context. Early users report significant time savings when migrating large coding sessions and switching between AI models for different tasks.