feat(statistics): store ranked_score & total_score under classic scoring mode (#68)

* Initial plan

* feat(calculator): add classic score simulator and scoring mode support

- Add ScoringMode enum with STANDARDISED and CLASSIC modes
- Add scoring_mode configuration to game settings
- Implement GetDisplayScore function in calculator.py
- Add get_display_score method to Score model
- Update score statistics to use display scores based on scoring mode

Co-authored-by: MingxuanGame <68982190+MingxuanGame@users.noreply.github.com>

* fix(calculator): apply scoring mode to TotalScoreBestScore delete method

- Update delete method to use display score for consistency
- Ensures all UserStatistics modifications use configured scoring mode

Co-authored-by: MingxuanGame <68982190+MingxuanGame@users.noreply.github.com>

* refactor(calculator): address code review feedback

- Move MAX_SCORE constant to app/const.py
- Implement is_basic() as method in HitResult enum
- Move imports to top of file in Score model
- Revert TotalScoreBestScore storage to use standardised score
- Apply display score calculation in tools/recalculate.py
- Keep display score usage in UserStatistics modifications

Co-authored-by: MingxuanGame <68982190+MingxuanGame@users.noreply.github.com>

* chore(linter): auto fix by pre-commit hooks

* Don't use forward-ref for `ScoringMode`

* chore(linter): auto fix by pre-commit hooks

* fix(calculator): update HitResult usage in get_display_score and adjust ruleset value in PerformanceServerPerformanceCalculator

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: MingxuanGame <MingxuanGame@outlook.com>

tools/recalculate.py

@@ -374,7 +374,9 @@ async def _recalculate_statistics(
             continue
 
         statistics.play_count += 1
-        statistics.total_score += score.total_score
+        # Use display score based on configured scoring mode
+        display_score = score.get_display_score()
+        statistics.total_score += display_score
 
         playtime, is_valid = calculate_playtime(score, beatmap.hit_length)
         if is_valid:
@@ -390,7 +392,9 @@ async def _recalculate_statistics(
         if ranked and score.passed:
             statistics.maximum_combo = max(statistics.maximum_combo, score.max_combo)
             previous = cached_best.get(score.beatmap_id)
-            difference = score.total_score - (previous.total_score if previous else 0)
+            # Calculate difference using display scores
+            previous_display = previous.get_display_score() if previous else 0
+            difference = display_score - previous_display
             if difference > 0:
                 cached_best[score.beatmap_id] = score
                 statistics.ranked_score += difference