Replaces the old analytics_options.yaml with a new analysis_options.yaml at the workspace root, consolidating lint rules and analyzer settings. Updates all references in subprojects to use the new file, and adds flutter_lints as a direct dev dependency in pubspec.yaml for consistent linting across the workspace.
Updated Makefile, mobile.mk, and melos.yaml to centralize mobile app build, start, and code generation commands using Melos scripts. Added info and install-melos commands for easier onboarding and workspace setup. Documentation updated to reflect staff app naming and new command structure.
Relocated all app directories (client, design_system_viewer, staff) and their contents under the new 'apps/mobile' path. This change improves project organization and prepares for future platform-specific structuring.
