Improve admin access and navigation links for superadmins

Update `App.tsx` to grant superadmin access to the admin dashboard and refactor navigation links to use `Link` component from `wouter`. Modify `DatabaseStorage` in `server/storage.ts` to update user records based on email instead of ID.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 069d4324-6c40-4355-955e-c714a50de1ea
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/069d4324-6c40-4355-955e-c714a50de1ea/bVdKIaU

replit.md

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+# Overview
+
+SAPIENS is a comprehensive media platform that aggregates news and content from various media outlets organized into three categories: People, Topics, and Companies. The platform features a sophisticated auction system for media outlet management rights, prediction markets tied to articles, and a multi-tier admin system. Users can browse media outlets, read articles, participate in prediction markets, and bid on management rights through an eBay-style auction system.
+
+# User Preferences
+
+Preferred communication style: Simple, everyday language.
+
+# System Architecture
+
+## Frontend Architecture
+- **Framework**: React with TypeScript using Vite for build tooling
+- **Styling**: Tailwind CSS with shadcn/ui component library for consistent design
+- **Routing**: Wouter for client-side routing
+- **State Management**: TanStack Query for server state and data fetching
+- **Authentication**: Integrated with Replit Auth system
+
+## Backend Architecture
+- **Framework**: Express.js with TypeScript
+- **Database**: PostgreSQL with Drizzle ORM for type-safe database operations
+- **Authentication**: Replit-based OAuth with session management
+- **API Design**: RESTful API with structured error handling
+
+## Database Design
+The system uses a PostgreSQL database with the following core entities:
+- **Users**: Supports role-based access (user, admin, superadmin)
+- **Media Outlets**: Categorized entities (people, topics, companies) with slugs and metadata
+- **Articles**: Content with rich text, images, and association to media outlets
+- **Prediction Markets**: Betting markets linked to articles with yes/no pricing
+- **Auctions**: eBay-style bidding system for media outlet management rights
+- **Bids**: Individual auction bids with quality scoring
+- **Comments**: User-generated content on articles
+
+## Authentication & Authorization
+- **Multi-tier Access**: Three user roles with escalating permissions
+- **Session Management**: PostgreSQL-backed sessions with configurable TTL
+- **Route Protection**: Middleware-based authentication checks for protected routes
+
+## Key Features
+- **Category-based Navigation**: Tabbed interface for People, Topics, Companies
+- **Dual View Modes**: Grid and list views for article browsing
+- **Auction System**: Real-time bidding with quality score integration
+- **Prediction Markets**: Integration with external prediction market APIs
+- **Admin Dashboards**: Role-specific management interfaces
+- **Content Management**: Rich article creation and media outlet administration
+
+# External Dependencies
+
+## Database & Infrastructure
+- **Neon Database**: Serverless PostgreSQL hosting
+- **Drizzle ORM**: Type-safe database queries and migrations
+- **Replit Auth**: OAuth authentication provider
+
+## UI & Styling
+- **shadcn/ui**: Pre-built accessible UI components
+- **Radix UI**: Primitive components for complex interactions
+- **Tailwind CSS**: Utility-first CSS framework
+- **Lucide Icons**: Icon library for consistent iconography
+
+## Development Tools
+- **Vite**: Fast build tool with HMR for development
+- **TypeScript**: Type safety across the full stack
+- **TanStack Query**: Server state management and caching
+- **React Hook Form**: Form handling with validation
+
+## Third-party Integrations
+- **Kalshi API**: External prediction market data (referenced in user requirements)
+- **Image Services**: Unsplash for placeholder images and media content
+- **Session Storage**: connect-pg-simple for PostgreSQL session management