style: apply oxfmt baseline formatting across all source files (#25)

## Summary
- Run `oxfmt .` across the entire codebase to establish formatted baseline
- 299 files changed — mechanical formatting only, no logic changes
- Double quotes, semicolons, 2-space indent, trailing commas, 100 print width

Part 3/4 of [VA-851](https://linear.app/heygen/issue/VA-851/pre-migration-configure-eslint-prettier-and-conventional-commits)

## Test plan
- [x] `pnpm format:check` — all 426 files pass
- [x] `pnpm -r typecheck` — all packages pass
- [x] `pnpm build` — all packages build
- [x] All 348 tests pass

packages/studio/src/components/editor/SourceEditor.tsx

@@ -1,5 +1,11 @@
 import { useRef, useCallback, memo } from "react";
-import { EditorView, keymap, lineNumbers, highlightActiveLine, highlightActiveLineGutter } from "@codemirror/view";
+import {
+  EditorView,
+  keymap,
+  lineNumbers,
+  highlightActiveLine,
+  highlightActiveLineGutter,
+} from "@codemirror/view";
 import { EditorState } from "@codemirror/state";
 import { defaultKeymap, history, historyKeymap } from "@codemirror/commands";
 import { bracketMatching, foldGutter, indentOnInput } from "@codemirror/language";
@@ -90,12 +96,7 @@ export const SourceEditor = memo(function SourceEditor({
           bracketMatching(),
           closeBrackets(),
           highlightSelectionMatches(),
-          keymap.of([
-            ...closeBracketsKeymap,
-            ...defaultKeymap,
-            ...searchKeymap,
-            ...historyKeymap,
-          ]),
+          keymap.of([...closeBracketsKeymap, ...defaultKeymap, ...searchKeymap, ...historyKeymap]),
           getLanguageExtension(lang),
           oneDark,
           updateListener,