Where to go next

You have finished the shortest closed loop. Pick by goal:

Goal	Go to
Shared vocabulary and project config	Glossary, luban.conf, groups/targets
Make Excel more complex	Nesting and collections, Polymorphism filling
Define structure rigorously	Excel Schema, Types quick reference
Multi-target / validation / localization	Validators, tag, L10N
A guide for designers	Designer filling guide
Look up commands and built-in names	CLI reference, Built-ins
Engineering practices	Best practices
Extending Luban	Extend overview

Full engine samples (Unity / others) still live in luban_examples; the docs only guarantee the “shortest path,” and do not expand into long per-engine articles here.