Initial development release.
Excel round-trip for coverage-wide factor tables and optional two-way interaction matrices.
Programmatic factor replacement, sparse updates, rebasing, and normalization.
Factor-table diff and validation helpers.
Current/proposed premium comparison, summaries, and dislocation distributions.
Generic scalar target-rate solver accepting arbitrary user rating code.
Added heuristic legacy-workbook migration helpers
profile_rate_workbook() and
extract_rate_tables() for finding, reviewing, and
extracting rectangular rating-table candidates from Excel
workbooks.
Added diagnose_rating_output() for triaging missing
and incorrect premiums during rater migration using grouped discrepancy
scans, lightweight background models, and pairwise interaction
checks.
Added runnable migration-harvesting and rater-diagnostic demo scripts plus unit tests.