docs: position Multica as open-source managed agents platform

- Update subtitle: "The open-source managed agents platform"
- Add managed agents positioning to "What is Multica?" section
- Add lifecycle summary line above Features list
- Mirror all changes in Chinese README

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -14,8 +14,8 @@
 
 **Your next 10 hires won't be human.**
 
-Open-source platform that turns coding agents into real teammates.<br/>
+The open-source managed agents platform.<br/>
-Assign tasks, track progress, compound skills — manage your human + agent workforce in one place.
+Turn coding agents into real teammates — assign tasks, track progress, compound skills.
 
 [![CI](https://github.com/multica-ai/multica/actions/workflows/ci.yml/badge.svg)](https://github.com/multica-ai/multica/actions/workflows/ci.yml)
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
@@ -31,7 +31,7 @@ Assign tasks, track progress, compound skills — manage your human + agent work
 
 Multica turns coding agents into real teammates. Assign issues to an agent like you'd assign to a colleague — they'll pick up the work, write code, report blockers, and update statuses autonomously.
 
-No more copy-pasting prompts. No more babysitting runs. Your agents show up on the board, participate in conversations, and compound reusable skills over time. Works with **Claude Code** and **Codex**.
+No more copy-pasting prompts. No more babysitting runs. Your agents show up on the board, participate in conversations, and compound reusable skills over time. Think of it as open-source infrastructure for managed agents — vendor-neutral, self-hosted, and designed for human + AI teams. Works with **Claude Code** and **Codex**.
 
 <p align="center">
   <img src="docs/assets/hero-screenshot.png" alt="Multica board view" width="800">
@@ -39,6 +39,8 @@ No more copy-pasting prompts. No more babysitting runs. Your agents show up on t
 
 ## Features
 
+Multica manages the full agent lifecycle: from task assignment to execution monitoring to skill reuse.
+
 - **Agents as Teammates** — assign to an agent like you'd assign to a colleague. They have profiles, show up on the board, post comments, create issues, and report blockers proactively.
 - **Autonomous Execution** — set it and forget it. Full task lifecycle management (enqueue, claim, start, complete/fail) with real-time progress streaming via WebSocket.
 - **Reusable Skills** — every solution becomes a reusable skill for the whole team. Deployments, migrations, code reviews — skills compound your team's capabilities over time.

README.zh-CN.md

@@ -14,8 +14,8 @@
 
 **你的下一批员工，不是人类。**
 
-开源平台，将编码 Agent 变成真正的队友。<br/>
+开源的 Managed Agents 平台。<br/>
-分配任务、跟踪进度、积累技能——在一个地方管理你的人类 + Agent 团队。
+将编码 Agent 变成真正的队友——分配任务、跟踪进度、积累技能。
 
 [![CI](https://github.com/multica-ai/multica/actions/workflows/ci.yml/badge.svg)](https://github.com/multica-ai/multica/actions/workflows/ci.yml)
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
@@ -31,7 +31,7 @@
 
 Multica 将编码 Agent 变成真正的队友。像分配给同事一样分配给 Agent——它们会自主接手工作、编写代码、报告阻塞问题、更新状态。
 
-不再需要复制粘贴 prompt，不再需要盯着运行过程。你的 Agent 出现在看板上、参与对话、随着时间积累可复用的技能。支持 **Claude Code** 和 **Codex**。
+不再需要复制粘贴 prompt，不再需要盯着运行过程。你的 Agent 出现在看板上、参与对话、随着时间积累可复用的技能。可以理解为开源的 Managed Agents 基础设施——厂商中立、可自部署、专为人类 + AI 团队设计。支持 **Claude Code** 和 **Codex**。
 
 <p align="center">
   <img src="docs/assets/hero-screenshot.png" alt="Multica 看板视图" width="800">
@@ -39,6 +39,8 @@ Multica 将编码 Agent 变成真正的队友。像分配给同事一样分配
 
 ## 功能特性
 
+Multica 管理完整的 Agent 生命周期：从任务分配到执行监控再到技能复用。
+
 - **Agent 即队友** — 像分配给同事一样分配给 Agent。它们有个人档案、出现在看板上、发表评论、创建 Issue、主动报告阻塞问题。
 - **自主执行** — 设置后无需管理。完整的任务生命周期管理（排队、认领、执行、完成/失败），通过 WebSocket 实时推送进度。
 - **可复用技能** — 每个解决方案都成为全团队可复用的技能。部署、数据库迁移、代码审查——技能让团队能力随时间持续增长。