docs: add SkillsMP discovery link in READMEs and documentation

Author: yeasy

README.md

@@ -172,6 +172,14 @@ ASK searches these sources by default:
 | **OpenAI** | dir | Codex skills from [openai/skills](https://github.com/openai/skills) |
 | **MATLAB** | dir | Official [matlab/skills](https://github.com/matlab/skills) |
 
+### 🔍 Skill Discovery
+
+Looking for more skills? Check out [SkillsMP](https://skillsmp.com), the open-source marketplace for AI Agent Skills. You can search thousands of community skills and add them using `ask repo add` or by installing directly from their repositories.
+
+### 🔍 Skill Discovery
+
+Looking for more skills? Check out [SkillsMP](https://skillsmp.com), the open-source marketplace for AI Agent Skills. You can search thousands of community skills and add them using `ask repo add` or by installing directly from their repositories.
+
 ### Add Custom Sources
 
 ```yaml

README_zh.md

@@ -145,6 +145,10 @@ ASK 默认搜索以下来源：
 | **OpenAI** | dir | [openai/skills](https://github.com/openai/skills) Codex 技能 |
 | **MATLAB** | dir | 官方 [matlab/skills](https://github.com/matlab/skills) |
 
+### 🔍 发现更多技能
+
+想要寻找更多技能？请访问 [SkillsMP](https://skillsmp.com)，这是最大的开源 AI Agent 技能市场。您可以搜索数以千计的社区技能，并通过 `ask repo add` 添加它们，或直接从其仓库安装。
+
 ### 添加自定义来源
 
 ```yaml

docs/skill-sources.md

@@ -19,6 +19,21 @@ ASK comes with six pre-configured sources:
 
 ---
 
+## Skill Discovery
+
+Looking for more skills? Check out [SkillsMP](https://skillsmp.com), the open-source marketplace for AI Agent Skills.
+
+SkillsMP indexes thousands of skills from GitHub. When you find a skill you like:
+1. Copy its GitHub repository URL.
+2. Add it to your project:
+   ```bash
+   ask repo add <owner>/<repo>/<path/to/skills>
+   ```
+3. Or install it directly if it's in a standard repository:
+   ```bash
+   ask skill install <skill-name>
+   ```
+
 ## Source Types
 
 ### Topic Sources (`topic`)