Add streak card with freezes, weekly leaderboard, focus/next-goal car…

[mashu]

…ds; harden rules, sync auto-level counters, cap score volume

[codecov]

Codecov Report

❌ Patch coverage is 62.50000% with 87 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.36%. Comparing base (42f4d3b) to head (d0ba5c4).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
src/components/features/stats/Leaderboard.tsx	13.51%	30 Missing and 2 partials ⚠️
...components/features/training/TeachingPlanPanel.tsx	27.27%	14 Missing and 2 partials ⚠️
src/components/ui/training/NextGoalCard.tsx	61.53%	13 Missing and 2 partials ⚠️
src/components/ui/training/TodaysFocusCard.tsx	79.41%	7 Missing ⚠️
src/components/ui/training/StreakCard.tsx	50.00%	6 Missing ⚠️
src/lib/db/repositories/achievement.repository.ts	0.00%	6 Missing ⚠️
src/hooks/useTrainingSession.ts	75.00%	4 Missing ⚠️
src/lib/streak.ts	98.36%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #6      +/-   ##
==========================================
- Coverage   72.55%   72.36%   -0.19%     
==========================================
  Files         143      147       +4     
  Lines       10231    10451     +220     
  Branches     3450     3533      +83     
==========================================
+ Hits         7423     7563     +140     
- Misses       2545     2801     +256     
+ Partials      263       87     -176     

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