Visible loading, clearer drawing

Loading is now visible when entering a campaign battle from its briefing. A second click cannot start another battle; a failed load returns to the briefing.
Clerk projectiles have clearer trails and cores. Enemy crypts use a short label beside the building.
The first lesson explains Shift. Tutorial shapes stop animating after six seconds, and the D example is clearer.
Optional Commission help is available through Pause → How to Play → Help draw a Commission. Use the wheel to set the size, click to pin five guides, then draw a separate continuous stroke by hand.
While help is enabled, the old tutorial pentagon is hidden; Esc restores the normal example. There is no stamp or automatic closure. Shape costs and recognition, campaign pacing and Swamp balance are unchanged.

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