[axcode07]

What & why

Checklist

• Tests pass (npm test) and typecheck is clean (npm run typecheck)
• New behavior is covered by a test (for fixes: the test that would have caught it)
• No new runtime dependencies (or discussed in an issue first)
• Commits are signed off (git commit -s, DCO — see CONTRIBUTING.md)

[axcode07]

• Fix Windows build failures caused by shell-specific quoting in esbuild commands
• Add convenient source-checkout commands for key generation and editor development
• Clarify the difference between published-package and source-checkout usage
• Add a Windows CI build and CLI smoke test

Verification

• npm run build
• npm run typecheck
• npm test — 137 tests passed
• Tested key generation and editor startup on Windows