Apps
A Liberty app groups connectors, screens, menus, dashboards, charts and jobs around one business domain. Apps are surfaced in the workspace selector at the top of the sidebar, edited per-entity from each Settings tab, and packaged as zip exports for transfer between environments.
Plugins
How to write custom Python code that the framework calls — Nomaflow job step callables, password validators, dispatch hooks. Drop a Python module under liberty-apps/plugins/, reference it by import path from TOML, the framework wires sys.path and calls it with the runtime context.
Internationalization
How the framework picks the language for labels, dictionary entries and error messages — X-Liberty-Lang request header, per-user preference, falling back to the default. How to add a new language and override labels per app or per environment.