Actual earnings now weigh more in the HV Score

Performance weight raised from 25% to 30% (Confidence reduced to 5%), and the performance curve no longer compresses strong returns into nearly identical scores.

• Problem: a vault with +118% tracked returns scored almost the same on Performance as one with +20%, because the logistic curve saturated too early.
• The scoring curves for 30D/90D/180D and long-term returns are now wider, so exceptional results meaningfully outscore merely good ones.
• Component weights changed: Performance 25% → 30%, Confidence 10% → 5%. How much followers actually earned now matters more than how long we have watched a vault.
• All vault scores were recalculated.