mobile: fix notebook icons + redesign home/notebooks + inline MD parser in WebView
- notebooks.tsx: detect Lucide icon names (folder, book, etc.) vs emoji
-> render <Folder> component instead of raw string 'folder'
-> colored icon wrap using notebook color
- home.tsx: full redesign — header greeting + quick actions + recent list
-> section-based layout, dense note rows with chevron
- note/[id].tsx: remove 'marked' import (Metro bundler issue)
-> inline minimal MD→HTML parser runs inside WebView JS context
-> handles headings, lists, blockquotes, code blocks, inline styles
-> zero external dependency, works 100% offline
- package.json: remove 'marked' dependency
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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