Document the TS2307 trap: the gitignored build/ of @docmost/prosemirror-markdown,
@docmost/git-sync and @docmost/mcp is not honoured by a single-package
pnpm --filter <pkg> test/tsc or a bare pnpm -r test (Nx dependsOn ^build is only
applied by nx run-many), so a consumer's typecheck fails with
Cannot find module '@docmost/...' until those packages are built first.
Mirrors the order .github/workflows/test.yml already uses.