feat(mapgen-studio): toolbar architecture v2 — top = Game bar, bottom = World/Map console with History affordance

[mateicanavra]

Implements toolbar architecture v2 (Pass-5), regrounding the vertical zoning so the top bar is exclusively the Game toolbar and the bottom bar is exclusively the World/Map console.

Game bar (header)

• Renames the center bar identity from "World" to "Game" (Globe → Gamepad2).
• Removes Size, Players, and Resources selects from the header entirely — no map settings in the top bar.
• Composes GameConsole inline into the Game bar row rather than docking it as a separate panel beneath the bar; the component sheds its own panel chrome and "Civ7" identity label.
• Collapses the setup disclosure to icon-only (SlidersHorizontal + chevron, no "Setup" text label), pinned last in the bar, expanding a game-setup-only row (Leader · Civ · Difficulty · Speed). Resources is removed from the setup dropdown.

World/Map console (footer)

• Adds globalSettings/onGlobalSettingsChange props and renders Size, Players, and Resources selects left of the Seed input, so all map authoring lives in one place.
• Replaces the inline last-run text cluster with a single History icon button: hover tooltip presents the last run (seed · size · players · resources), mirrored onto aria-label/title for accessibility, and click copies the last seed — preserving the behavior the old inline seed button carried.
• The shared operation gate extends to the relocated selects: Size, Players, and Resources disable together with seed, reroll, auto-run, and Run while any studio or game operation is in flight.

Wiring

• StudioShell reroutes WorldSettings props from the header to the footer.
• Tests updated to assert map-setting controls in the footer, the History affordance's accessible name and tooltip content, and that the operation gate covers the relocated selects.

[github-actions]

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Debug: {"isClosed":false,"isFork":false,"suppress":false,"force":false,"isTopOfStack":false,"hasToken":true,"draft":false}

[mateicanavra]

Merge activity

• Jun 12, 8:50 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jun 12, 9:55 PM UTC: Graphite rebased this pull request as part of a merge.
• Jun 12, 9:55 PM UTC: @mateicanavra merged this pull request with Graphite.