The regional-map entry changes from zoom-threshold LOD swap to
explicit click-through: the planetary heightmap view becomes FIXED
(pan/zoom removed together with its replacement in T-1138, never
before); hovering shows a rectangle cursor representing the
regional-mode bounds; click descends centered on the click point's
derived DistrictPos. DISTRICT_WINDOW_MIN_ZOOM retired before ever
being built; D-013's zoom-owns-descent superseded for this seam only
(click owns descent). In-mode behavior unchanged (pan-only refetch,
debounce, cache, border-fade). Morph transition explicitly deferred.
Open at T-1138: the rectangle is an affordance, not to scale — n=64
is ~131 km = a few px on a planetary canvas; resolve the honest
representation in the screen design. T-1138 description updated;
T-1140 filed for the two companion UI defects fixed alongside.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5
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