fix: type annotation for EPIPE handler (TS2339) + simplify CI

- main.ts: add NodeJS.ErrnoException type to stdout error handler
  (fixes TS2339 from base branch merge)
- ci.yml: use npx tsc directly instead of bun run typecheck

Author: Raylan LIN

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: oven-sh/setup-bun@v2
       - run: bun install
-      - run: bun run typecheck 2>&1 || (npx tsc --noEmit 2>&1; echo "EXIT: $?"; exit 1)
+      - run: npx tsc --noEmit
       - run: bun test
       - name: Smoke test
         run: |

src/main.ts

@@ -18,7 +18,7 @@ process.on('SIGINT', () => {
 });
 
 // Handle stdout EPIPE gracefully (e.g., piped to `mpv` that exits early)
-process.stdout.on('error', (e) => {
+process.stdout.on('error', (e: NodeJS.ErrnoException) => {
   if (e.code === 'EPIPE') process.exit(0);
   else throw e;
 });