v0.9.1

Fixed

• Malformed Markdown links no longer stall comment anchor recovery.
• Workspace launchers accept only HTTP/HTTPS URLs and open Windows URLs without a command shell.

v0.9.0

Changed

• Requires Node 22 or newer; Node 20 is no longer supported.

Fixed

• Externally-hosted images (![](https://...)) no longer overflow the doc column and cover the comments sidebar. Large images are capped to the column width; small inline avatars stay small. They now also open in the zoom lightbox and show the same broken-link placeholder as local images.
• Clicking an image wrapped in a link ([![](img)](url)) opens the lightbox instead of also opening the link in a new tab.

v0.8.1

Fixed

• Saving a file now replaces it in one step, so anything reading that file at the same moment sees either the old version or the new one — never a half-written file. Previously a save emptied the file and refilled it, and a large document left a window where a reader (another editor, an agent, a mini app) could catch it partially written. Applies to markdown saves, drawing saves, mini-app writes, applied suggestions, and the link rewrites that follow a move.
• A saved file keeps its existing permissions, so a file you had made private stays private — including while the save is still being written, so its contents are never briefly readable by other users on the machine.

v0.8.0

Added

• Mini apps can open external links with window.mdc.openUrl(url), which opens the link in a new browser tab. Previously an app had no way to link out at all — the sandbox blocks popups, so a plain <a target="_blank"> did nothing. Only https:, http:, and mailto: URLs are opened; anything else is refused and the call rejects.

Fixed

• Open tabs now show the same per-file-type icon as the file tree, so an image, HTML file, PDF, or drawing is recognisable in the tabs strip instead of every tab sharing the markdown icon.

v0.7.0

Added

• A ⋮ Document actions menu at the end of the doc toolbar, on every file type, with Copy filename and Copy path (the absolute path, the same form the handoff prompt uses).
• Copy contents in the ⋮ menu for markdown, copying the raw text (frontmatter included) that matches what's on screen — the live edit buffer before autosave, the editable side of a conflict review, or a previewed suggestion. The toast notes · unsaved until that exact text is on disk, and · reload pending when you're looking at a snapshot the file has since moved past.
• Copy contents also covers drawings and HTML files. A drawing copies the live canvas, including a change still waiting for autosave, and a drawing whose contents can't be rendered still copies its raw text. HTML copies the source behind the page you're looking at, whether it's shown as plain HTML or running as a trusted app. Images and PDFs have no text to copy, so the item isn't offered for them.
• The same copy actions on file-tree right-click, acting on the row you clicked rather than the open file: a file offers Copy filename, Copy path, and — when it has text — Copy contents; a folder offers Copy path. Copying the open file picks up its live version and · unsaved / · reload pending status just as the ⋮ menu does, while any other row is read from disk.

Changed

• File-tree context menus now show familiar icons and separate creation actions from deletion.
• End session… has moved into the new ⋮ menu, so the toolbar carries one overflow menu instead of a second kebab that appeared only while an agent was watching.

Fixed

• Workspace names stay visible in browser tabs and standalone app windows when the served root path has a trailing slash.
• Images, PDFs, HTML, and drawings no longer show a comments sidebar that cannot accept anchored comments.

v0.6.2

Fixed

• The workspace name is now in the page the server sends, so a remote workspace no longer opens showing "mdc" and renaming itself once the file list loads.

v0.6.1

Changed

• The page title now matches the installed app's name ("mdc — workspace"), so the standalone window's title bar shows it once instead of "mdc — workspace - mdc".

v0.6.0

Added

• Opt in to launching a workspace in a chromeless Chrome app window with mdc serve --app-window or app_window = true in .mdc.toml (macOS with Chrome installed; falls back to a browser tab).
• Each workspace now installs as its own named app ("mdc — folder-name"): the web app manifest is generated per workspace, so multiple installed workspaces are distinguishable in the Dock.

v0.5.0

Added

• Install mdc as a standalone app from the browser (Chrome's install icon, or Safari's File → Add to Dock) for a dedicated window and Dock icon without the URL bar.

v0.4.0

Added

• Paste clipboard images or drag image files into an edited markdown doc to add them under a sibling assets/ folder and insert their references.
• Open .excalidraw and .excalidraw.json files as interactive read-only drawings, with offline fonts, live reload, theme support, and workspace navigation.
• Edit drawings with the full Excalidraw toolset and conflict-safe autosave, then switch back to a read-only canvas.
• Create new drawings from the Files pane, with drawing-aware filename defaults and a ready-to-edit empty canvas.