- Guard addPostFrameCallback with !_autoScrolled so it only fires once per
widget lifetime instead of on every LayoutBuilder rebuild.
- Derive seasonComplete flag; pass it into _node so the last stage uses
gold "done" styling (not "current/next") when the season is fully 3-starred.
- Extract const Color(0xFF232B4A) to GamePalette.lockedNode.
- Remove warnIfMissed: false from tap call in season_map_screen_test; ensureVisible
already guarantees hit-testing succeeds (confirmed: test still passes cleanly).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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