v0.1.1-alpha.1

Release notes — edit HTML, not just Markdown:

• HTML is now a first-class editable format. Open, edit, and save .html files in the same WYSIWYG editor you use for Markdown — handy now that AI assistants increasingly hand you rich HTML instead of Markdown. The format is chosen automatically from the file extension.
• Rich document constructs round-trip losslessly — callouts/admonitions, collapsible <details>, highlight (<mark>), subscript/superscript, and definition lists, on top of the usual headings, lists, tables, code, and links.
• Safe by default — HTML is sanitized as it loads, so scripts, inline event handlers, and embedded frames can never run in the editor.

Still an early alpha — back up your notes. On Windows, SmartScreen warns on first run because the build is unsigned; that is expected.

Added

• HTML editable format: the single canonical HTML⇄document converter on the existing Milkdown/ProseMirror engine — no second editor, no new dependencies. Loads are sanitized before reaching the editable surface.
• Format-aware tabs: open/save/Save As/reload pick the matching serializer per file; export stays Markdown→comrak.
• Richer HTML constructs: <mark>/<sub>/<sup> marks and <div class="callout">, <details>/<summary>, <dl>/<dt>/<dd> blocks.
• Gate: tests/html-roundtrip.test.ts — per-construct round-trip, load sanitization, and the export degrade-to-markdown path. Suite 76→97.