Module error 

Error types raised by identifier validation and database value conversion.

The crate exposes two error enums:

• IdValidationError — produced when a try_new constructor on a typed identifier rejects its input (empty string, malformed shape, etc.).
• DbValueError — produced when FromDbValue cannot convert a DbValue variant into the requested target type (NULL where a value is required, type mismatch, parse failure, numeric overflow).

Both implement std::error::Error so callers can compose them into larger thiserror-derived enums via #[from].

Enums

DbValueError

IdValidationError