This PR implements the complete main viewport panel with journal entry functionality, pet dashboard, and AI insights display as specified in the requirements.

🚀 Key Features Implemented

Three-Panel Viewport System

• Dashboard View: Pet statistics, recent activity, and AI insights overview
• Journal Entry Form: Rich text input with mood and activity level selectors
• History Timeline: Chronological display of all journal entries with AI analysis status

Pet Dashboard

• Dynamic stats cards showing total entries, pet age, days tracked, and breed information
• Recent activity section displaying the latest journal entries with mood indicators
• AI insights panel that integrates with the analysis system
• Responsive grid layout that adapts to different screen sizes

Journal Entry Creation

• Intuitive form with mood selection (😊 Happy, 🎾 Playful, 😴 Tired, etc.)
• Activity level tracking (Low, Normal, High, Unusual Behavior)
• Rich text area for detailed journal content
• Form validation ensuring required fields are completed
• Automatic navigation back to dashboard after successful submission

Smart Data Integration

• Seamless integration with existing pet and AI analysis stores
• Automatic stats updates when new entries are added
• Persistent storage using localStorage for offline capability
• Real-time UI updates across all view modes

Welcome Experience

• Attractive welcome screen when no pet is selected
• Clear visual hierarchy with gradient background and heart icon
• Helpful messaging to guide users to select a pet

🔧 Technical Implementation

New Components:

• Viewport.svelte - Main viewport with three distinct view modes
• AIInsightsCard.svelte - Reusable component for displaying AI analysis results

Store Enhancements:

• Added addJournalEntry method to petHelpers for seamless entry management
• Enhanced initialization to load pets and selections on component mount

UI/UX Features:

• Smooth navigation between dashboard, journal, and history views
• Loading states during AI analysis processing
• Error handling for AI analysis failures (graceful degradation)
• Mobile-responsive design with optimized layouts

📊 Screenshots

Journal Entry Form:

Pet Dashboard with Stats:

History Timeline View:

The implementation provides a complete, production-ready interface for pet journaling with intelligent insights, delivering on all acceptance criteria while maintaining excellent user experience and code quality.

Fixes #12.

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