5.8.13

• Variant prices: the master's variant-less row is the conflict, not a lost price. Combine as variants
  moves the absorbed products' price rows onto the master, scoped to each combination; a variant shows the
  master price because a variant-less row applies to every variant and the lowest wins. Priority is not the
  fix: keep no variant-less row below a variant's price. dw-pim-modelling structural-model.md,
  dw-data-access recipes-pim.md.
• Variant rows are writable from MCP 0.6.3-BETA. patch_products_safe with variantId writes fields
  that allow variant editing and refuses the others; the "no API writes a variant row" finding is now
  scoped to older MCP versions. Same files.
• dw-pim-modelling: a sparse variant matrix strands the shopper. Swift's selector crosses out
  missing combinations and cannot jump to an existing one; keep families to options that combine fully.
• dw-search-indexing index-management.md: gate a product build on a moved lastBuildStarted, and
  purge deleted pages before rebuilding the Content index, which otherwise keeps indexing them.
• dw-swift-page-blocks: the site container width is the Master field MediaQueryLimit; SearchField
  on a dark scheme is invisible; ProductComponentSlider has no title and an empty slider strands its heading.
• dw-extend-mcp-tools tool-surface-gaps.md: delete_variant_combinations leaves the combination's
  price rows behind.