A reader who picks a religion family on the map now sees the grid narrow to the
same peoples, and a language selection travels the same way. Region already
linked; these two did not, because the two halves do not name a religion the
same way and nothing yet proved what the honest translation was.
The map filters religion through its legend's flat tab, keyed by the FIRST
LETTER of the religion code ('B'); the grid filters through a derived axis that
runs library/colors/religion.js forward per row ('BLA' -> 'Buddhism'). One
shared table, read in opposite directions, copied by neither half — so the wire
carries the family NAME and each side resolves it against its own data.
Two measurements changed the design on the way:
- mapStore.filters.religions, which the map's filter panel writes, is read by
NOTHING: the mapLayers.applyFilters() it was meant to reach is called and
never implemented anywhere in the tree. A link routed through it would have
set state, passed a smoke test and dimmed no pin.
- the map's legend selections are mutually exclusive by design, so it can
light exactly one of region/religion/language. The composite mirrors that
rather than letting the grid hold three facets the map cannot show.
Religion links at the FAMILY and not at the code, deliberately: a map cannot
distinguish 'BLA' from 'BMA' — both dim as Buddhism — so linking at the code
would promise a precision one half cannot keep.
check:linked-vocabulary proves it by measurement rather than by reading: it
compares the total reached over the composite's wire against the total the grid
gives for the same facet on its own (83 of 2,107 both ways), and runs the MUTANT
first — the legend key 'B' instead of 'Buddhism' — failing as NO-TEETH if the
wrong mapping scores the same as the right one. Measured: mutant 0, real 83.
The CLI doc's apk:debug quote was realigned in passing; package.json had gained
app:start-page and the doc still described the older chain.
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