v0.8.0: Performance + Code Simplification

What's New

⚡ Performance

• Consolidated 4 polling intervals → 1 (15s)
• Consolidated 4 WebSocket connections → 1
• LogoCanvas: canvas animation → static SVG (eliminates 3 rAF loops)
• ChatPanel: React.memo on MdText, Think, Tool, Result, Err
• Notion theme: removed universal selector with !important
• Google Fonts: removed render-blocking link

🧹 Code Simplification

• Removed dead code (orphaned MdText duplicate)
• Added missing React import
• Fixed missing closing parens
• Extracted patchLastMsg helper (DRY)
• Consolidated scroll tracking
• Made refresh return Promise
• Formatted load() with reduce()

🐛 Bug Fixes

• Dynamic Node.js path detection (was hardcoded)
• Fixed i18n key 'pending'
• Updated theme whitelist (4 → 8 themes)
• Standardized Solarized Light colors