Add cloud sync for skills, settings, and memory across machines

Problem

When moving to a new machine, there's no way to sync Claude Code configuration. Everything is local files scattered across ~/.claude/ and ~/.agents/:

• Skills (~/.claude/skills/, ~/.agents/skills/)
• Settings (~/.claude/settings.json)
• Plugins (~/.claude/plugins/)
• Memory (~/.claude/projects/)
• Global config (~/.claude/CLAUDE.md)

Manually copying or scp-ing all of this is tedious and error-prone. The workaround is maintaining a dotfiles repo, but that's unnecessary friction for something that should just work.

Proposal

Add a built-in sync mechanism (e.g., tied to your Anthropic account) so that skills, settings, plugins, and memory can be pulled on any new machine with a single command like:

claude sync pull

Or automatically sync on login, similar to how VS Code Settings Sync or browser profiles work.

Use case

• Setting up a new machine (e.g., upgrading laptops)
• Working across multiple machines (desktop + laptop)
• Re-installing after a clean OS install
• Sharing a consistent skill/plugin setup across a team