[krtschil]

Summary

• Support WERTUNG=1 DAT exports with separate NS/EW rankings and participant directions.
• Reconstruct an absent direction's ranking from stored matchpoint awards, including byes and adjusted results, while preserving official rankings.
• Display complete ranking totals and percentages in BSOL for JSON and XML imports.
• Add converter, XML round-trip and ranking display regression coverage.

Verification

• 46 targeted regression tests passed.
• Reconstructed all 14 EW results from export1535.dat match the user-confirmed table; all 13 official NS results remain unchanged.
• User tested develop and approved merging.