Release v2.15.4

Changes since v2.15.3

feat: add expandable balance chart and improve account detail view (49850ec)
feat: add account detail view with transaction filtering (c319ee3)
feat: improve subscription management with 30-day filtering and SMS display (d1e7976)
chore(release): remove release notes for version 2.15.2 and enhance release script (5af8b03)

Download the APK below and install it on your Android device.