docs: update docs and readme

docs/en/intro/index.mdx

@@ -1,53 +1,60 @@
 ---
 title: Introduction
-description: CowAgent - AI Super Assistant powered by LLMs
+description: CowAgent - Open-source super AI assistant and Agent Harness
 ---
 
-<img src="https://cdn.link-ai.tech/doc/78c5dd674e2c828642ecc0406669fed7.png" alt="CowAgent" width="600px"/>
+<div align="center">
+  <img src="https://cdn.link-ai.tech/doc/78c5dd674e2c828642ecc0406669fed7.png" alt="CowAgent" width="450px"/>
+</div>
 
-**CowAgent** is an AI super assistant powered by LLMs with autonomous task planning, long-term memory, skills system, multimodal messages, multiple model support, and multi-platform deployment.
+**CowAgent** is an open-source super AI assistant and Agent Harness. It proactively plans tasks, runs tools and skills, and autonomously grows with memory and knowledge.
 
-CowAgent can proactively think and plan tasks, operate computers and external resources, create and execute Skills, and continuously grow with long-term memory. It supports flexible switching between multiple models, handles text, voice, images, files and other multimodal messages, and can be integrated into WeChat, web, Feishu, DingTalk, WeCom, and WeChat Official Account. It runs 7x24 hours on your personal computer or server.
+CowAgent is lightweight, easy to deploy, and built to extend. Plug in any major LLM provider, run it across Web and major IM platforms, 24/7 on a personal computer or server.
 
-<Card title="GitHub" icon="github" href="https://github.com/zhayujie/CowAgent">
-  github.com/zhayujie/CowAgent
-</Card>
+<CardGroup cols={2}>
+  <Card title="GitHub" icon="github" href="https://github.com/zhayujie/CowAgent">
+    Open-source repository — Star and contribute
+  </Card>
+  <Card title="Try Online" icon="cloud" href="https://link-ai.tech/cowagent/create">
+    No setup required — experience CowAgent instantly
+  </Card>
+</CardGroup>
 
 ## Core Capabilities
 
 <CardGroup cols={2}>
   <Card title="Autonomous Task Planning" icon="brain" href="/en/intro/architecture">
-    Understands complex tasks and autonomously plans execution, continuously thinking and invoking tools until goals are achieved. Supports accessing file systems, terminals, browsers, schedulers, and other system resources through tools.
+    Decomposes complex tasks and executes them step by step, looping over tools and skills until the goal is reached.
   </Card>
-  <Card title="Long-term Memory" icon="database" href="/en/memory">
-    Three-tier memory flow (context → daily memory → global memory) with daily Deep Dream distillation, keyword and vector retrieval support.
+  <Card title="Long-term Memory" icon="database" href="/en/memory/index">
+    Three-tier architecture (context → daily → core), automatic Deep Dream distillation, hybrid keyword + vector retrieval.
   </Card>
-  <Card title="Knowledge Base" icon="book" href="/en/knowledge">
-    Automatically organizes structured knowledge with knowledge graph visualization, building a continuously growing knowledge network through cross-references.
+  <Card title="Personal Knowledge Base" icon="book" href="/en/knowledge/index">
+    Auto-curates structured knowledge into a Markdown wiki, builds an evolving knowledge graph with visual browsing.
   </Card>
   <Card title="Skills System" icon="puzzle-piece" href="/en/skills/index">
-    Implements a Skills creation and execution engine with built-in skills, and supports custom Skills development through natural language conversation.
+    A complete skill creation and execution engine. Install from Skill Hub or generate custom skills via natural-language conversation.
   </Card>
-  <Card title="Multimodal Messages" icon="image" href="/en/channels/web">
-    Supports parsing, processing, generating, and sending text, images, voice, files, and other message types.
+  <Card title="Multimodal Messaging" icon="image" href="/en/channels/web">
+    First-class support for text, images, voice, and files — recognition, generation, and delivery.
   </Card>
   <Card title="Tool System" icon="wrench" href="/en/tools/index">
-    Built-in tools for file I/O, terminal execution, browser automation, scheduled tasks, messaging, and more. The Agent autonomously invokes tools to accomplish complex tasks.
+    Built-in file I/O, terminal, browser, scheduler, memory retrieval, web search, and more — with native MCP integration.
   </Card>
   <Card title="Command System" icon="terminal" href="/en/cli/index">
-    Provides terminal CLI and in-chat commands for process management, skill installation, configuration, context inspection, and other common operations.
+    Terminal CLI and in-chat commands for process management, skill installation, configuration, and context inspection.
   </Card>
-  <Card title="Multiple Model Support" icon="microchip" href="/en/models/index">
-    Supports mainstream model providers including OpenAI, Claude, Gemini, DeepSeek, MiniMax, GLM, Qwen, Kimi, Doubao, and more.
+  <Card title="Pluggable Models" icon="microchip" href="/en/models/index">
+    Claude, GPT, Gemini, DeepSeek, Qwen, GLM, Kimi, MiniMax, Doubao, and more — swap providers from the Web console with one click.
   </Card>
-  <Card title="Multi-platform Deployment" icon="server" href="/en/channels/weixin">
-    Runs on local computers or servers, integrable into WeChat, web, Feishu, DingTalk, WeChat Official Account, and WeCom applications.
+  <Card title="Multi-channel Integration" icon="server" href="/en/channels/index">
+    A single Agent simultaneously serves Web, WeChat, Feishu, DingTalk, WeCom, QQ, and Official Accounts.
   </Card>
 </CardGroup>
 
-## Quick Experience
+## Quick Start
 
-Run the following command in your terminal for one-click install, configuration, and startup:
+Run one of the commands below to install, configure, and start CowAgent in a single step:
 
 <Tabs>
   <Tab title="Linux / macOS">
@@ -62,25 +69,25 @@ Run the following command in your terminal for one-click install, configuration,
   </Tab>
 </Tabs>
 
-By default, the Web service starts after running. Access `http://localhost:9899/chat` to chat in the web interface.
+Once started, open `http://localhost:9899` to access the **Web console** — the unified place to chat, configure providers, connect channels, and install skills.
 
 <CardGroup cols={2}>
   <Card title="Quick Start" icon="rocket" href="/en/guide/quick-start">
     Complete installation and run guide
   </Card>
   <Card title="Architecture" icon="sitemap" href="/en/intro/architecture">
-    CowAgent system architecture design
+    CowAgent system architecture
   </Card>
 </CardGroup>
 
 ## Disclaimer
 
-1. This project follows the [MIT License](https://github.com/zhayujie/CowAgent/blob/master/LICENSE) and is intended for technical research and learning. Users must comply with local laws, regulations, policies, and corporate bylaws. Any illegal or rights-infringing use is prohibited.
-2. Agent mode consumes more tokens than normal chat mode. Choose models based on effectiveness and cost. Agent has access to the host operating system — deploy with caution.
-3. CowAgent focuses on open-source development and does not participate in, authorize, or issue any cryptocurrency.
+1. This project is licensed under the [MIT License](https://github.com/zhayujie/CowAgent/blob/master/LICENSE) and is intended for technical research and learning. You are responsible for complying with applicable laws and regulations in your jurisdiction; the maintainers assume no liability for any consequences arising from use of this project.
+2. **Cost & safety:** Agent mode consumes substantially more tokens than plain chat — pick models that balance quality and cost. The Agent has access to your local operating system; deploy only in trusted environments.
+3. CowAgent is a pure open-source project and does not participate in, authorize, or issue any cryptocurrency.
 
 ## Community
 
-Add our assistant on WeChat to join the open-source community:
+Scan the WeChat QR code to join the open-source community group:
 
 <img width="140" src="https://img-1317903499.cos.ap-guangzhou.myqcloud.com/docs/open-community.png" />