Roster, scouting and player editor improvements

Thank you for your feedback! This update includes the following improvements.

• Separated first-team and reserve rosters into tabs, with clearer colored rating grades and values.
• Added individual notice deletion and bulk deletion of displayed read notices. Pending trade offers are protected.
• Added potential editing and eight selectable default face variants in Commissioner Mode.
• Unscouted draft prospects no longer reveal their potential. AI scouting estimates also avoid directly using undiscovered true ratings.
• Reserve-team performance now adds a small development bonus, capped at 10% of reserve experience.
• Korean won amounts and contract input now use 만원.
• Optimized translation processing and replaced Taiwan-specific postseason wording with a generic championship label.
• Fixed editor fields becoming hidden, unintended contract changes when editing unrelated attributes, and potential rounding.
• Fixed missing translations in trade, fielding proficiency and editor explanations.

Your detailed reports are a great help. We will keep improving usability, performance and translations.