Get the current document for a space

Keys without the spaces:sensitive scope only read what the deep pass has screened for sensitive values. Until it has (enrichment.level is base), the document has the same shape with its content withheld: the lists are empty and stats gives the counts. Once enrichment.level is deep, sensitive facts are redacted, their values are removed from every other text, and images are given only for the frames that non-sensitive records cite as evidence. Fields the deep pass does not read (project description, summary, area layout) and raw first-hand sources (transcript, owner answers, narrator quotes) always require the scope.