fix: mobile responsiveness improvements for graph and sleep pages

style: revert last change (media query back to 480px and remove overflow hidden)

style: shrink brain image and add overflow hidden on mobile to prevent overlapping

style: establish full fluid mobile responsiveness on iPhone 14 viewports across AuthScreen, App Shell, and 3D Brain overlays

feat: implement memory consolidation service with sleep cycle, add frontend visualization components, and integrate backend database orchestration.

feat: implement interactive brain visualization, dream sequence consolidation, and knowledge graph components to the frontend.

refactor: Update UI components and styling to match design specs

feat: Overhaul Soma UI to premium Neural Gloss aesthetic with single-screen optimization