Political realm borders and realm-name labels were Territory-mode-only
(showNationBorders() == mode==Territory), so there was no way to see borders
and realm names layered over e.g. the Biome view without losing the
terrain-type coloring. Added an independent showRealms bool (key Q, a "Realm
borders" toggle in Civilization & Ecology) OR-ed with showNationBorders() at
just the border-line and realm-label draw sites (3D, 2D, and exportMapImage()
which shares the 2D path) -- mode/vcolors/recolor() are never touched, so
this overlay draws over any active colour mode without tinting cells. War
fronts and diplomacy arcs stay showNationBorders()-only on purpose, so the
combined view doesn't drag in Territory-only clutter.
Realm-name labels everywhere they're drawn (Territory view, this new toggle,
and the always-on atlas export) now also show the realm's dominant culture
as a smaller "(the Velmar)"-style line via Nation.cultureId ->
planet.cultureList(). exportAtlasImage() forces showRealms on for the
duration of its export (same pattern already used for showSettlements) and
adds the culture line as its own lower-priority label candidate in the
decluttered pass, anchored below each realm's own label so it drops out
gracefully on a dense world via the existing collision check.
AtlasLabel::text changed from a raw pointer to an owned std::string since the
culture strings are built on the fly.
Not reset in regenWorld() -- like showDiplomacy, its underlying nation/
segment lists are already cleared on reseed, so nothing stale can render.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TMfyZv91tonDnPJqbaTVJE
Jonas Reith
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