- Added multiple htmlToMarkdown patterns for TipTap button output:
1. data-button with data-href/data-style attributes
2. Alternate attribute order (data-style before data-href)
3. Simple data-button fallback with href and class
4. Buttons wrapped in p tags (from preview HTML)
5. Direct button links without p wrapper
- Button shortcodes now correctly roundtrip:
RichEditor -> HTML -> [button url=... style=...] -> Preview/Email
- All patterns now explicitly include style=solid for consistency
e84fa969bb