X_ERROR_CODE_UNRESOLVED

an error code is written as a name this repository cannot resolve

the errors step read a code: whose value is an identifier, and no module-scope const in that same file gives it a value — an import, a local, an enum member. Every reader of the code set is then blind to whatever code it holds: no row in framework.manifest.json, no row demanded on this page, no entry for bun run gate-codes, no x errors explain answer. Silent and permissive, so the DRYer the author the less the gate saw (#277). A const NAME = 'X_…' in the SAME file is resolved and is not a finding; a table read (SEO_ERROR_CODES.metaMissing) is not judged, because the registry it reads from declares those literals itself

the fix names the offending <file>:<line> — write the X_* code as a string literal there, or declare it as a module-scope const in that same file