feat: let the payloads speak the conventions

Attributes now ride every level of the pipeline: a translator declares
what it knows -- how a category renders, in the registered vocabulary
-- the generator speaks for captures that predate the conventions from
the same rules that used to be unwritten, and the whole game is held to
the registry before a bundle is written. The manifest declares the
vocabulary it was written against, and validation is stricter about a
bundle that declares than one that does not: attributes must be
registered, the render attribute must agree with the legacy field it
will one day retire, a declared standard icon must have been resolved.

The viewer's one display rule -- the string compare on displayType that
four files each held a copy of -- becomes one function reading the
attribute first and falling back to the legacy field, so bundles from
before the conventions draw exactly as they always did. Location
attributes ship in the text file beside descriptions, read when a card
opens; the packed payload is untouched, and every regenerated map's
pins are byte-identical to the build before, which is the whole point:
the same data, now saying what it means.

commit

3477b5c020e255ab0fd015ce5574c217532ad379

parent

63d39fd0573cdbea31ca3bd129e712b2bea04264

author

Dami <dami.etoile@gmail.com>