Switch dashboard navigation from long section scrolling to hash-backed views, preserving Usage as the default operational view and keeping mobile drawer navigation visible.
* feat(dashboard): improve mobile control plane UX
* fix(dashboard): improve mobile nav accessibility
* feat(dashboard): add mobile drawer and usage glance cards
* feat(dashboard): add compact usage matrix and i18n
* fix(dashboard): make usage-first console layout
* fix(dashboard): remove chrome and group usage rows
Adds a disabled-by-default loopback web dashboard MVP with read-only control-plane views, prompt preview redaction, Vite React UI, and validation coverage.
