v0.21.0

Bug Fixes

• Paste — Rich clipboards (Notion and similar) ship both a faithful HTML payload and a lossy Markdown twin. Routing now prefers the HTML handler, so pasted images, links, and structure the Markdown twin drops are preserved.
• Paste — Notion content keeps its document order: nested children no longer render above their parents (only table cells stay children-first, since the table tool resolves cell ids on insert). Internal references that previously vanished — sub-pages, linked databases / collection views, and inline page mentions — now paste as Notion bookmarks/links instead of being dropped or leaking the raw "‣" glyph, and uploaded media whose binary isn't on the clipboard becomes a Notion-link bookmark carrying the filename rather than a bare filename paragraph.
• Paste — Pasted external Notion audio now shows its title (the player reads data.title, which was left blank), and a malformed inline date annotation no longer leaks the raw "‣" placeholder glyph.

Maintenance

• Tests — Added regression coverage for HTML-over-Markdown routing, document-order preservation, internal-reference rescue, pasted audio titles, and date-glyph handling.