docs(folder-memory): add prerequisites section and enhance release workflow with README links

- Add 'Prerequisites' section to folder-memory README files clarifying that conversations must occur inside a folder
- Update docs/plugins/filters/folder-memory.md and folder-memory.zh.md with same prerequisites
- Enhance extract_plugin_versions.py to auto-generate GitHub README URLs in release notes
- Update plugin-development workflow to document README link requirements for publishing

plugins/filters/folder-memory/README.md

@@ -20,6 +20,10 @@
 - **Async Processing**: Runs in the background without blocking the user's chat experience.
 - **ORM Integration**: Directly updates folder data using OpenWebUI's internal models for reliability.
 
+## ⚠️ Prerequisites
+
+- **Conversations must occur inside a folder.** This plugin only triggers when a chat belongs to a folder (i.e., you need to create a folder in OpenWebUI and start a conversation within it).
+
 ## 📦 Installation
 
 1. Copy `folder_memory.py` to your OpenWebUI `plugins/filters/` directory (or upload via Admin UI).

plugins/filters/folder-memory/README_CN.md

@@ -22,6 +22,10 @@
 - **异步处理**：在后台运行，不阻塞用户的聊天体验。
 - **ORM 集成**：直接使用 OpenWebUI 的内部模型更新文件夹数据，确保可靠性。
 
+## ⚠️ 前置条件
+
+- **对话必须在文件夹内进行。** 此插件仅在聊天属于某个文件夹时触发（即您需要先在 OpenWebUI 中创建一个文件夹，并在其内部开始对话）。
+
 ## 📦 安装指南
 
 1. 将 `folder_memory.py` (或中文版 `folder_memory_cn.py`) 复制到 OpenWebUI 的 `plugins/filters/` 目录（或通过管理员 UI 上传）。