Redacted excerpt; full evidence withheld.

$ cd <guest-path> && pwd && ls -la && id -u && python3 --version && cat README.md | head -c 6000
exit: 0
e's `vendor/` costs a
   fraction of a second and almost no disk — see
   [the worktree recipe](docs/agent-worktrees.md) and
   [the Docker pattern](docs/docker.md) for a PHP-free build stage.

Full rationale — why Composer itself is good, how phpm earns (or mostly
doesn't), where the first users come from — is written out in
[why phpm](docs/why-phpm.md), along with the project's hard rules.

## Benchmarks
[excerpt truncated]