Fenced ```mermaid blocks in the Markdown preview render as diagrams. mermaid (12.1.0) is loaded lazily, only when a preview contains a diagram, with securityLevel "strict"; colours come from the theme tokens and diagrams re-render on theme changes. Syntax errors show inline under the source. Rendered diagrams are cached by theme + source, so editing elsewhere in the file doesn't redraw them.
Fixes#79
Claude-Session: https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
Built-in Vim emulation on @replit/codemirror-vim (approved dependency), modelled on IdeaVim: `vim.toggle` (Tools › Vim, status widget, Settings › Editor › Vim), mode widget (NORMAL / INSERT / VISUAL / V-LINE / V-BLOCK / REPLACE), IdeaVim-style shortcut conflict handlers (Vim / IDE per key) through a generic `registerKeyClaim()` in the keymap dispatcher, Escape closing popups first, a safe subset of ~/.openideavimrc / ~/.ideavimrc (set, map variants, mapleader, :action / <Action>()), Ex commands :w :wa :q :qa :wq :x :action. Covers file editors, diff editable side and merge result via a new `embeddedEditorExtensions` extension point.
Verified in the app on macOS: motions/operators, i/Esc/V mode widget, :w saves, Ctrl+R redoes in Vim without running Run, toggling off restores plain editing. Not verified on Windows/Linux.
Fixes#27https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
- ide-web: built-in static server on 127.0.0.1 that serves project files,
plus detection and launching of installed browsers.
- Open In › Browser in the editor, project view and tab menus; browser bar
and built-in preview beside HTML editors; ⌃⇧R opens the default browser.
- Emmet: Tab expansion in markup editors and Update Tag with Emmet.
Claude-Session: https://claude.ai/code/session_01SaPPsVPuk6ZTNsoUCNCbMv
The WebGL renderer rasterizes each glyph against its cell background, so
text over the selection came out at a visibly lighter weight than the
rest and looked like a different font. The DOM renderer draws text like
the editor does, selected or not.
Claude-Session: https://claude.ai/code/session_01B65qLEKnkeYTGdbwhLpjCu
l0ng-ai