format v3: unified feature wire

The wire finally says what the model has said since the normalization
commit: a world is collections of features, each collection declared
point, path, or area. The payload's groups and zones keys are gone;
one flat collections array replaces them, points leading so the packed
payload's owner column indexes it directly, shape collections after
with their features inline. The manifest counts every kind -- points,
paths, areas -- where it used to count only pins, and Validate holds a
bundle to the new shape: geometry agreeing with its collection's
declared kind, every path collection carrying its stroke width, label
policy only where labels draw on ground, point collections never
inlining, and every packed location owned by a point collection that
exists. The location payload moves to version 3 without moving a byte:
owner indexes the collections array, and the region column reads as
Member. Shape collections claim numeric identities from the same FNV
scheme every other pipeline id comes from.

What the registry said all along now rides where it said it: the
stroke width lives on the path collection alone -- arcgismap stops
spelling it on each zone -- every collection's attributes mirror its
kind, displayType is off the wire entirely, and the manifest stamps
the registry's own conventions version again. The ledger drops the
legacy donorPins spelling; donorFeatures is the account, and measure
keeps its fallback for the bundles already in the wild.

The frontend reads the new wire whole: real collections drive the
legend's sections by their group strings, ungrouped shape collections
gather in the viewer's own Zones section so the pre-collapse behaviour
keeps a place to land, the hide and unfold and label-override sets key
by real collection ids, and the AND filter conjoins across the
collections the wire names instead of one synthetic bucket. A shape
feature's card now measures its ground -- area and the locations
inside it, or length -- where the world declares a geographic mapping,
and shows the attributes the feature carries in its own right, HUC-12
finally surfaced. Search lists named shape features beside the
locations.

The parity tour runs green on the regenerated Westminster bundle with
the same 45 pins and 118 zones; the cross-format diff is structural
key renames and the first zone row changing identity, with no pin
drift. The full corpus rebuilds and validates as v3.

commit

4c0ba8638e3ee9fb2fe2ea2f3a3756ee8a4f143a

parent

5368a47867cdb84faec13468a2d07c987c63585b

author

Dami <dami.etoile@gmail.com>