Files now land at output/<theme>/profile-details.svg etc., without
leading 0-8 prefixes. README authors embed cards by name, so the
lexicographic-sort rationale for the prefix no longer applies.
- All Filename() methods + the allCards ordering comment updated.
- Tests updated to expect the 9 unnumbered filenames.
- README, deployment-guide, codebase-summary, roadmap references
refreshed.
- Dracula sample SVGs regenerated under new names.