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/core/src/compiler/timingCompiler.ts

@@ -50,7 +50,7 @@ export interface CompilationResult {
 
 function getAttr(tag: string, attr: string): string | null {
   const match = tag.match(new RegExp(`${attr}=["']([^"']+)["']`));
-  return match ? match[1] ?? null : null;
+  return match ? (match[1] ?? null) : null;
 }
 
 function hasAttr(tag: string, attr: string): boolean {
@@ -63,7 +63,10 @@ function injectAttr(tag: string, attr: string, value: string): string {
 
 // ── Core compilation ─────────────────────────────────────────────────────
 
-function compileTag(tag: string, isVideo: boolean): { tag: string; unresolved: UnresolvedElement | null } {
+function compileTag(
+  tag: string,
+  isVideo: boolean,
+): { tag: string; unresolved: UnresolvedElement | null } {
   let result = tag;
   let unresolved: UnresolvedElement | null = null;