CLI to debug "works on my machine" issues by detecting environment drift: runtimes, .env keys, Git, Docker, ports, DNS, TLS, PATH, timezone, and local services.

Compare .env files across environments, branches, and runtimes. Type-aware diffing, secret masking, git branch comparison, MCP server for AI agents. Zero dependencies.

Proof-carrying, privacy-first bug reports that compare working and failing developer environments.