Replaces the Task 1 stub. Builds an EditorView with:
- history, line numbers, active-line highlight, bracket matching,
close brackets, indent-on-input
- default + custom HighlightStyle
- light/dark theme via matchMedia-driven Compartment with a
prefers-color-scheme change listener
- language via Compartment (swappable for the files-modal dropdown)
- autocomplete via Compartment (only if vocab is provided)
- keymap stack: closeBrackets, default, history, completion, indentWithTab
Mounts the EditorView immediately before the textarea, hides the
textarea. Exposes window.__editor.mount(textarea, opts) returning a
controller with getValue / setContent / setLanguage / destroy.
bash language comes via @codemirror/legacy-modes/mode/shell wrapped
in StreamLanguage.define — same mechanism as srccfg.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
CompletionSource over the srccfg-vocab.json shape. Word fragment
matched via /[A-Za-z0-9_]{2,}/ at the caret; ranking is
prefix-match-first (shorter prefixes preferred) then substring;
cap 50 candidates, top 8 rendered. Each option carries the kind
('cvar'/'command') as cm6's autocomplete `type` so the popup
shows the appropriate icon.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
themes.js exports four extensions:
- editorLightTheme / editorDarkTheme: EditorView.theme() variants
keyed to the --cm-* CSS variables defined in tokens.css (light) and
its prefers-color-scheme: dark block.
- editorHighlightStyle: HighlightStyle bound to Lezer tags
(comment, string, number, keyword, variableName).
- editorHighlighting: syntaxHighlighting(editorHighlightStyle) ready
to drop into the EditorState extensions array.
@lezer/highlight comes in transitively via @codemirror/language;
no new package.json dependency needed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
~30 LOC StreamLanguage definition for Source-engine .cfg syntax.
Tokens: line comment (//…), string, number, keyword (exec/alias/bind/
unbindall/wait), identifier. Linewise, no nesting — matches the
shape we authored as a Prism regex grammar in the v1 attempt.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
