feat: 新增插件系统、多种插件类型、开发指南及多语言文档。

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [Unreleased]
+
+### 🚀 New Features
+- **Smart Mind Map**: Updated to v0.7.3. Improved description and metadata.
+- **Knowledge Card**: Updated to v0.2.1. Improved description and metadata.
+- **Documentation**: Added comprehensive `plugin_development_guide_cn.md` consolidating all previous guides.
+
+### 📦 Project Structure
+- **Renamed**: Project renamed from `awesome-openwebui` to **OpenWebUI Extras**.
+- **Reorganized**:
+    - Moved `run.py` to `scripts/`.
+    - Moved large documentation files to `docs/`.
+    - Removed `requirements.txt` to emphasize "resource collection" nature.
+- **Added**: `CONTRIBUTING.md` guide.
+
+### 📝 Documentation
+- **README**: Updated English and Chinese READMEs with new project name and structure.
+- **Plan**: Updated `implementation_plan.md` to reflect the new direction.
+
+---
+
+## [0.1.0] - 2025-12-19
+- Initial release of the reorganized project structure.