html_export_attribute_pages

Html export should generate a dedicated page per attribute key used in the export scope.
Attribute pages should show a distribution of distinct values ( counts and share of ideas ), and a searchable full list of ideas that declare the attribute with their values for that key.
Emission defaults on and is controllable via includeAttributePages so this page family can be flagged in or out without changing the export pipeline shape.
The attributes index, idea attribute tables, and search results should link to these pages when enabled.

Interactive page: html_export_attribute_pages