0e3c4b8d47
- Add KellyCalculator (Domain/Betting): pure fractional-Kelly stake from win probability, decimal odds, bankroll, and fraction (default quarter-Kelly). Returns 0 on non-positive edge; truncates the suggestion down to 2 decimals so it never exceeds the computed figure. 19 unit tests. - MyBets: add a page-local stake helper (bankroll + win-probability inputs) that suggests a quarter-Kelly stake from the form's rate, with an Apply button and a no-edge message. Win probability is user-supplied, not derived from a signal. - Localization (en+ru) for the Kelly helper and the export-hub keys (shared resx).