ci: 시놀로지 설치 경로 직접 참조로 변경 (설치 단계 제거)

- Python: /usr/bin/python3 (3.8.12) 고정 사용
- Node.js: /usr/local/bin 을 PATH에 추가 (v18.18.2 appstore 설치)
- Python deps: /volume1/gitea/python_venv 영구 venv로 최초 1회만 설치
- 이후 CI 실행은 venv 재사용 → pip 재설치 단계 불필요

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -9,6 +9,7 @@ on:
 jobs:
   validate-and-build:
     # Synology NAS act_runner: host-based 실행 (Docker 불필요)
+    # Python: /usr/bin/python3 (3.8.12), Node.js: /usr/local/bin/node (v18.18.2)
     runs-on: self-hosted
 
     steps:
@@ -23,25 +24,33 @@ jobs:
         git fetch origin ${{ github.sha }} --depth=1
         git reset --hard FETCH_HEAD
 
-    - name: Install Python Dependencies
-      env:
-        SETUPTOOLS_USE_DISTUTILS: stdlib
+    - name: Configure Runtime Paths
       run: |
-        if ! python3 -m pip --version >/dev/null 2>&1; then
-          curl -sS https://bootstrap.pypa.io/pip/3.8/get-pip.py -o get-pip.py
-          python3 get-pip.py --user --quiet
-          rm get-pip.py
+        # Node.js 18은 /usr/local/bin에 설치됨 (appstore) — PATH에 추가
+        echo "/usr/local/bin" >> $GITHUB_PATH
+        echo "=== 런타임 버전 확인 ==="
+        /usr/bin/python3 --version
+        /usr/local/bin/node --version
+        /usr/local/bin/npm --version
+
+    - name: Setup Python Environment
+      run: |
+        VENV=/volume1/gitea/python_venv
+        if [ ! -f "$VENV/bin/pip" ]; then
+          echo "=== 최초 1회 venv 생성 및 패키지 설치 ==="
+          /usr/bin/python3 -m venv "$VENV"
+          "$VENV/bin/pip" install --upgrade pip --quiet
+          "$VENV/bin/pip" install "numpy==1.24.4" "pandas==2.0.3" \
+            yfinance pyyaml openpyxl --quiet --prefer-binary
+          if [ -f requirements.txt ]; then
+            "$VENV/bin/pip" install -r requirements.txt --quiet --prefer-binary
+          fi
+          echo "venv 설치 완료"
+        else
+          echo "=== venv 재사용: $("$VENV/bin/python" --version 2>&1) ==="
         fi
-        export PATH=$HOME/.local/bin:$PATH
-        python3 -c "import platform, sys; print('[ENV_DEBUG] Platform:', platform.platform(), 'Python:', sys.version)"
-        python3 -m pip install --upgrade pip --user --quiet
-        python3 -m pip install --upgrade --force-reinstall "setuptools==59.6.0" "wheel" "Cython<3.0" --user --quiet
-        python3 -c "import setuptools; print('[ENV_DEBUG] installed setuptools:', setuptools.__version__)"
-        python3 -m pip install "numpy==1.24.4" --user --quiet --no-build-isolation
-        python3 -m pip install "pandas==2.0.3" --user --quiet --no-build-isolation
-        if [ -f requirements.txt ]; then python3 -m pip install -r requirements.txt --user --quiet --prefer-binary; fi
-        python3 -m pip install yfinance pyyaml openpyxl --user --quiet --prefer-binary
-        echo "$HOME/.local/bin" >> $GITHUB_PATH
+        # 이후 모든 스텝에서 venv python 사용
+        echo "$VENV/bin" >> $GITHUB_PATH
 
     - name: Install Node Dependencies
       run: npm install --quiet