Forkd hits 101ms microVM forking

Forkd solves the infrastructure bottleneck for AI agents by bringing `fork()` semantics to KVM-isolated virtual machines.

• –Spawns 100 isolated sandboxes in 101ms, eliminating the cold-boot delay that stalls agent workflows.
• –Uses Firecracker and KVM to provide hardware-level security, far superior to Docker for untrusted code execution.
• –Copy-on-write memory sharing allows hundreds of children to share heavy runtimes or model weights with minimal RAM overhead.
• –Unique `BRANCH` feature lets agents fork "mid-thought" for stateful parallel exploration or tree-of-thought debugging.
• –Built-in MCP server enables instant integration with Claude Desktop, Cursor, and other agentic development environments.