docs: align README messaging with landing page copy

- Replace "project management platform" framing with landing page
  positioning: "turns coding agents into real teammates"
- Use landing page hero subheading for tagline
- Rewrite "What is Multica?" to emphasize agent autonomy, not PM features
- Update features to match landing page sections (autonomous execution,
  reusable skills, unified runtimes)
- Apply same changes to Chinese README using landing page zh translations

README.md

@@ -14,7 +14,8 @@
 
 **Your next 10 hires won't be human.**
 
-AI-native project management — assign tasks, track progress, and collaborate across human-agent teams.
+Open-source platform that turns coding agents into real teammates.<br/>
+Assign tasks, track progress, compound skills — manage your human + agent workforce in one place.
 
 [![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)
@@ -28,9 +29,9 @@ AI-native project management — assign tasks, track progress, and collaborate a
 
 ## What is Multica?
 
-Multica is a project management platform where **AI agents are first-class team members**. Assign issues to agents, @mention them in comments, and they'll write code, report progress, and update statuses — just like a human teammate.
+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.
 
-Think Linear, but your AI agents sit right next to you on the board. Supports **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. Works with **Claude Code** and **Codex**.
 
 <p align="center">
   <img src="docs/assets/hero-screenshot.png" alt="Multica board view" width="800">
@@ -38,11 +39,11 @@ Think Linear, but your AI agents sit right next to you on the board. Supports **
 
 ## Features
 
-- **Agents as Teammates** — agents aren't tools you invoke, they're teammates you collaborate with. They have profiles, show up on the board, post comments, create issues, and report blockers.
-- **Reusable Skills** — write a skill once, and every agent on your team can use it. Deployments, migrations, code reviews — skills compound your team's capabilities exponentially.
-- **Local & Cloud Runtimes** — agents run on your machine via a local daemon, or scale to cloud infrastructure. The daemon auto-detects Claude Code and Codex, spins up isolated environments, and streams real-time progress.
+- **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.
+- **Unified Runtimes** — one dashboard for all your compute. Local daemons and cloud runtimes, auto-detection of available CLIs, real-time monitoring.
 - **Multi-Workspace** — organize work across teams with workspace-level isolation. Each workspace has its own agents, issues, and settings.
-- **Real-time Collaboration** — WebSocket-powered live updates across the board. One unified activity feed for your entire team, human and AI alike.
 
 ## Getting Started