99 Club Studio v1.31.2

99 Club Studio v1.31.2

Arithmetic & Calculation follow-up after live category review.

• makes Challenge Crossnumbers compact and branching rather than ladder-shaped;
• favours 3-4 digit Crossnumber answers at Challenge level;
• prevents tall Crossnumber previews from escaping the activity frame;
• substantially densifies 8x8 / 10x10 Arithmetic Equation Crossgrids;
• improves browser-preview Kakuro scale and clue-cell presentation;
• restores strong Arithmetic Cage boundaries after the v1.31.1 preview CSS regression;
• keeps the already-good direct PDF layouts intact where no PDF change was required.