Redesigned Welcome Screen

What: Complete overhaul with adaptive layout, branded "Clawd" mascot, and dynamic content feeds

Features:

• Clawd mascot: Custom ASCII art character with theme-aware rendering
• Three responsive layouts: Adapts to terminal width (compact/horizontal/vertical)
• Dynamic feeds: Recent activity with timestamps, release notes, getting started tips
• Personalized greeting: Shows user's display name when available
• Model & billing info: Quick view of current settings

Details:

• Automatically adjusts to terminal size and capabilities
• Special rendering optimizations for Apple Terminal
• Supports both light and dark themes
• Shows recent conversation history
• Displays latest changelog entries
• Contextual tips based on project state
• Evidence: Main welcome screen iOB() at line 429317, Clawd mascot PK5() at line 429231, feed system gOB() at line 429168, splash screen Pc1() at line 441300 in v2.0.0