The emit! macro expects diagnostic codes without the DiagCode:: prefix.
Changed three occurrences in codespace.rs:
- Line 281: DiagCode::CmapInvalidCodespace → CmapInvalidCodespace
- Line 290: DiagCode::CmapInvalidCodespace → CmapInvalidCodespace
- Line 412: DiagCode::CmapInvalidCodespace → CmapInvalidCodespace
This fixes compilation errors that prevented the codebase from building.
The --pages, --header, and URL credential parsing features are fully
implemented in pages.rs, header.rs, and url.rs modules with comprehensive
tests and integration in main.rs, grep/mod.rs, and hash.rs.
References: pdftract-25igv, notes/pdftract-25igv.md