Document branch-and-don't-commit workflow in AGENTS.md (#94)

Author: thomasgallagher

AGENTS.md

@@ -27,6 +27,7 @@ Guidance for AI agents working in this repository.
 - Use l-ui classes only in engine views, with no additional Tailwind utilities, as Tailwind classes referenced only inside the engine will not be generated by the host app’s build
 - Dummy app documentation pages may use additional Tailwind utilities, but should favour l-ui classes where possible
 - Importmap for JS (no bundler)
+- Put new changes on a branch with a meaningful name, but do not commit; the user will ask when ready to commit
 - We are currently in pre-release, so breaking changes may be introduced. Flag any expected breaking changes clearly before making them, but do not avoid necessary improvements solely to preserve backwards compatibility
 - CRITICAL: Retain WCAG 2.2 AA compliance. Do not be too pedantic though as this introduces audit loops which are undesirable.
 - A WCAG 2.2 AA table looks like this: