Fix critical importer row and column boundary parsing

docs/critical_import_tool.md

@@ -238,9 +238,10 @@ The currently enabled phase-3 table set is:
 Current phase-3 notes:
 
 - header detection now tolerates minor `top` misalignment across the `A-E` header glyphs
+- first-row body parsing can now begin slightly above the first roll-band label when the PDF places prose between the header row and the label, which prevents clipped `01-05` cells such as `Mana.pdf`
 - row boundaries can snap to the last affix-to-prose transition between adjacent roll labels when midpoint slicing would leak into the next row
 - affix symbols are learned from the footer legend before body parsing, so symbol-only affix fragments are classified correctly
-- affix fragments that cross a column boundary in the XML can be split on hard internal spacing before column assignment, which is required for `Mana.pdf`
+- cross-column text fragments can now be split at geometry-aligned whitespace boundaries before column assignment, while affix fragments still split on hard internal spacing
 - footer page numbers are filtered out before body parsing
 - validation allows a single contiguous affix block either before or after prose