The bare-tag path in yamlFlowScalar only escaped tags with special characters, so a purely-numeric tag like ‘2026’ or a reserved word like true/false/null/yes/no/~ stayed bare and YAML parsed it as a number, boolean, or null — failing z.array(z.string()) at build time. I tightened the bare-safe test to additionally reject purely-numeric tokens and a case-insensitive reserved-word set, quoting anything unsafe. Added a unit test covering numeric, mixed-case reserved words, and ~; full suite (32 tests) and astro check both pass.
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2026-07-18 02:49 [experiment] status: done
Quote unsafe tags in renderLabEntry (engine/lib.mjs)Quote YAML-unsafe tagsStopped certain tag names breaking the site build
renderLabEntry now quotes numeric and YAML-reserved-word tags so they stay strings.Tags that are numbers or YAML keywords are now quoted, so they stay strings and cannot fail the build.A tag like 2026 or no could be misread by the site builder and break the build. They are now written in a way that cannot be misread.
#engine#yaml-safety
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