新增示例库逻辑

docs/en/reference/api-overview.md

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+# API Overview
+
+Pixelle-Video Python API reference documentation.
+
+---
+
+## Core Classes
+
+### PixelleVideoCore
+
+Main service class providing video generation functionality.
+
+```python
+from pixelle_video.service import PixelleVideoCore
+
+pixelle = PixelleVideoCore()
+await pixelle.initialize()
+```
+
+---
+
+## Main Methods
+
+### generate_video()
+
+Primary method for generating videos.
+
+**Parameters**:
+
+- `text` (str): Topic or complete script
+- `mode` (str): Generation mode ("generate" or "fixed")
+- `n_scenes` (int): Number of scenes
+- `title` (str, optional): Video title
+- `tts_workflow` (str): TTS workflow
+- `image_workflow` (str): Image generation workflow
+- `frame_template` (str): Video template
+- `bgm_path` (str, optional): BGM file path
+
+**Returns**: `VideoResult` object
+
+---
+
+## Examples
+
+Check the `examples/` directory for more examples.
+
+---
+
+## More Information
+
+Detailed API documentation coming soon.
+