Replaced dictionary return values with a DiceRoll dataclass for better
type safety and cleaner code.
Changes:
- Added DiceRoll dataclass with fields: dice_notation, num_dice, die_sides, rolls, total
- Updated _parse_and_roll_single_dice() to return Optional[DiceRoll]
- Updated _parse_and_roll_multiple_dice() to return list[DiceRoll]
- Updated _roll_weighted_scout_dice() to return list[DiceRoll]
- Updated _create_multi_roll_embed() to accept list[DiceRoll]
- Updated _create_fielding_embed() to accept list[DiceRoll]
- Changed all dict key access (result['total']) to dataclass attributes (result.total)
- Updated logging statements to use dataclass attributes
- Updated all 34 test cases to use DiceRoll dataclass
Benefits:
- Improved type safety with explicit dataclass types
- Better IDE autocomplete and type checking
- More maintainable code with clear data structures
- No runtime changes - all functionality preserved
All 34 dice command tests pass.