Coolify 4.1.2 validates every checkout-relative path on create and 422s
anything without a leading slash: `docker_compose_location` against
ValidationPatterns::FILE_PATH_PATTERN, `base_directory`/`publish_directory`
against DIRECTORY_PATH_PATTERN. cast passed all three through verbatim and
validated nothing about their shape — and docs/semantics.md taught the exact
value Coolify rejects (`compose_file: docker-compose.yaml`).
The 422 is a property of the manifest, not of the instance, so it is knowable
before a single API call. Refine at parse time, on every verb: a refusal that
names the fix, not a silent normalization — the manifest is the artifact under
review, so a bad value is fixed in the file, once.
Fixes the docs example and the fixtures that carried the broken value.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
