fix: add opencv system deps for HF build

.huggingface.yml

@@ -3,15 +3,21 @@ build:
   env:
     HF_HUB_ENABLE_HF_TRANSFER: "1"
   commands:
-    # ⚙️ 基础准备
+    # ⚙️ 系统依赖：OpenCV 所需
+    - apt-get update && apt-get install -y libgl1 libsm6 libxext6 libxrender-dev && rm -rf /var/lib/apt/lists/*
+
+    # ⚙️ Python 基础准备
     - pip install --upgrade pip wheel setuptools
     - pip config set global.timeout 120
     - pip config set global.index-url https://pypi.org/simple
 
-    # 🚀 核心依赖（必须成功）
+    # 🚀 核心依赖
     - echo "Installing core requirements..."
     - pip install --prefer-binary --timeout 120 -r requirements_core.txt
 
-    # 💡 可选依赖（失败不终止）
+    # 💡 额外依赖（失败不阻塞）
     - echo "Installing extra requirements..."
     - pip install --prefer-binary --timeout 120 -r requirements_extra.txt || true
+
+    # 启动 app
+    - python app.py