fix(ci): test_async.py importorskip aiofiles + skip count 3→4

`test-without-extras` job 이 `test_async.py` 의 6 테스트를 ImportError 로 fail.
모듈-레벨 `pytest.importorskip("aiofiles")` 로 파일 전체를 skip 시켜 해결.
ci.yml 의 `3 skipped` 검증을 `4 skipped` 로 (langchain×2, jsonschema, aiofiles).
CLAUDE.md 메모도 stale "29" → 현재 4-file 정확한 설명으로 갱신.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: DanMeon

.github/workflows/ci.yml

@@ -125,10 +125,11 @@ jobs:
       - name: Run pytest — extras-gated tests must auto-skip via importorskip
         # ^ 파일-레벨 importorskip 은 해당 파일 전체를 skip 1개로 카운트.
         #   현재 gated 파일: test_langchain_loader.py + test_langchain_loader_ir.py
-        #   (langchain-core), test_ir_schema_export.py (jsonschema) → 총 3 파일
+        #   (langchain-core), test_ir_schema_export.py (jsonschema),
+        #   test_async.py (aiofiles) → 총 4 파일
         run: |
           uv run pytest tests/ -m "not slow" -v | tee pytest-output.txt
-          if ! grep -qE '(^|[^0-9])3 skipped([^0-9]|$)' pytest-output.txt; then
-            echo "::error::expected 3 extras-gated files to auto-skip via importorskip (langchain×2, jsonschema)"
+          if ! grep -qE '(^|[^0-9])4 skipped([^0-9]|$)' pytest-output.txt; then
+            echo "::error::expected 4 extras-gated files to auto-skip via importorskip (langchain×2, jsonschema, aiofiles)"
             exit 1
           fi

CLAUDE.md

@@ -54,7 +54,7 @@ All rules from `~/.claude/CLAUDE.md` apply. This file adds only project-specific
 - Real HWP fixtures live in the submodule: `external/rhwp/samples/aift.hwp` (HWP5), `table-vpos-01.hwpx` (HWPX). `tests/conftest.py` + `benches/bench_gil.py` reference this path
 - When changing one path, change both
 - Markers: `slow` (PDF render), `langchain` (extras required). Default run: `pytest -m "not slow"`
-- LangChain tests auto-skip when `langchain-core` is missing (`pytest.importorskip`). Keep the skipped count at **exactly 29** — CI validates this
+- Extras-gated test files use module-level `pytest.importorskip` so the whole file counts as **1 skip** when the extra is missing. Current gated files: `test_langchain_loader.py` + `test_langchain_loader_ir.py` (langchain-core), `test_ir_schema_export.py` (jsonschema), `test_async.py` (aiofiles) → CI's `test-without-extras` job validates **exactly 4 skipped** (see `.github/workflows/ci.yml`). When adding a new extras-gated file, bump the count in both CLAUDE.md and ci.yml
 - `tests/type_check_errors.py` holds **exactly 4 intentional pyright errors** — CI validates that too. When editing, preserve count; don't fix them
 
 ### Git workflow

tests/test_async.py

@@ -13,7 +13,11 @@
 from pathlib import Path
 
 import pytest
-import rhwp
+
+# ^ aiofiles 미설치 시 모듈 전체 skip — `[async]` extras 없는 CI job 에서 ImportError fail 회피
+pytest.importorskip("aiofiles")
+
+import rhwp  # noqa: E402
 
 
 def test_aparse_returns_document_instance(hwp_sample: Path) -> None:
@@ -65,9 +69,7 @@ async def flow():
     assert ir1 is ir2
 
 
-def test_aparse_raises_import_error_without_aiofiles(
-    hwp_sample: Path, monkeypatch
-) -> None:
+def test_aparse_raises_import_error_without_aiofiles(hwp_sample: Path, monkeypatch) -> None:
     """``aiofiles`` 미설치 시뮬레이션 — ``rhwp.aparse`` 는 명시적 ``ImportError``."""
     import builtins