chore: bump version to v2026.4.387 and simplify screenshot script}
- Bump version from 2026.4.385 to 2026.4.387 in package.json and README.md - Extract reusable switchTheme() and clickNav() helpers in screenshots.mjs - Remove waitLoaded() and waitConnected() helpers in favor of inline waits - Simplify connection flow and navigation logic, removing complex button-finding loops and fallback navigation patterns - Replace React database/monitoring screenshots with Angular Info and Statistics page screenshots - Reduce overall script complexity by ~70 lines