Fenced ```mermaid blocks in the Markdown preview are drawn as diagrams.
The mermaid library is loaded on demand, only for previews that contain
a diagram, and renders with securityLevel "strict". Diagram colours come
from the theme tokens and are redrawn when the theme changes.
A block with a syntax error keeps its source visible and shows the
parser message below it. Results are cached per source and theme, so
edits elsewhere in the file don't redraw diagrams, and an edited diagram
keeps its previous drawing until the new one is ready.
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
Per the maintainer's decision for #24, no third-party themes are bundled; instead a theme plugin template and docs let the community port themes (IntelliJ also ships few themes, the rest are plugins).
- templates/theme-plugin: manifest-only plugin with an original example (Harbor Night) covering every UI token and an editor scheme (.icls equivalent).
- docs/plugins/themes.md: format, IntelliJ / VS Code porting tables, generated token reference (pnpm gen:theme-docs); drift test fails when tokens.css and the template/reference disagree.
- pnpm theme:import-intellij: dependency-free converter for IntelliJ .theme.json (+ .icls).
- Plugin host: themes may name an editor-scheme merged over the theme; comments allowed in theme files.
- Fixes: a plugin theme's kind now switches the light/dark base; plugin themes go in their own stylesheet so the Appearance accent and editor scheme still layer on top.
Verified: ide-plugin tests, vitest (44), in-app on macOS: installed the template from disk, applied Harbor Night (dark base + teal accent over Islands Light), back to default restored the light theme.
Claude-Session: https://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