Account-level sync for commands, memory, and settings

Feature request

Claude Code stores user-level configuration locally (~/.claude/), including:

• Custom slash commands (~/.claude/commands/)
• Auto memory files (~/.claude/projects/*/memory/)
• User settings (~/.claude/settings.json)
• MCP server configurations

When moving between machines (e.g. work desktop, laptop, new install), none of this transfers. Users have to manually copy or re-create their setup.

Proposal

Add optional account-level sync so that user-level config (commands, memory, settings) persists across machines tied to the user's Claude/Anthropic account. This would mean:

• Custom slash commands are available on any machine
• Memory (user preferences, project context) carries over
• Settings and MCP server configs can be synced (with opt-in, since some are machine-specific)

Use case

As a user who works across multiple machines, I want my Claude Code customizations (commands, memory, preferences) to be available everywhere without manual file copying. When I set up a new machine and log into Claude Code, my personalized setup should just be there.