feat: initial release of muyue - AI-powered dev environment assistant

Complete implementation of muyue v0.1.0, a single-binary Go tool that
transforms the development environment with AI-powered orchestration.

Core features:
- TUI with 5 tabs (Dashboard/Chat/Workflow/Agents/Config) using Charm stack
- AI chat via MiniMax M2.7 with async message handling
- Structured Plan→Execute workflow engine (gather→plan→review→execute)
- System scanner detecting 14 tools + 8 runtimes across Linux/macOS/Windows
- Auto-installer for Crush, Claude Code, BMAD, Starship, runtimes
- Background update daemon with hourly checks
- LSP auto-config for 16 language servers
- MCP auto-config for 12 servers (deployed to Crush + Claude Code)
- Skills system with 5 built-ins + AI-powered generation
- Crush/Claude Code proxy for unified control
- HTML preview server for visual outputs
- First-time setup wizard with interactive profiling
- Cross-platform: Linux (primary), macOS, Windows, WSL

CI/CD:
- GitHub Actions CI: build + test + lint on Linux/macOS/Windows
- Release workflow: cross-compile 6 binaries with checksums on tag push

💘 Generated with Crush

Assisted-by: GLM-5.1 via Crush <crush@charm.land>

README.md

@@ -0,0 +1,76 @@
+# muyue
+
+AI-powered development environment assistant by **La Légion de Muyue**.
+
+## What it does
+
+`muyue` is a single binary that transforms your entire development environment:
+
+- **Scans** your system for tools, runtimes, and configs
+- **Installs** missing tools automatically (Crush, Claude Code, BMAD, Starship, runtimes...)
+- **Updates** everything in the background
+- **Profiles** you on first run to personalize the experience
+- **Unifies** control of Crush and Claude Code from one TUI
+- **Orchestrates** AI agents via MiniMax M2.7
+- **Customizes** your terminal prompt (branch, commits, language, etc.)
+- **Configures** MCP servers, LSPs, and skills automatically
+- **Previews** HTML/visual outputs in your browser
+
+## Tech Stack
+
+- **Go** — single binary, no dependencies
+- **Charm** — Bubble Tea, Lip Gloss, Huh (TUI, styling, forms)
+- **Starship** — terminal prompt customization
+- **MiniMax M2.7** — AI orchestration
+- **BMAD-METHOD** — structured development workflows
+
+## Install
+
+```bash
+go build -o muyue ./cmd/muyue/
+```
+
+Or with Make:
+
+```bash
+make build
+make install-local
+```
+
+## Usage
+
+```bash
+muyue              # Start interactive TUI
+muyue scan         # Scan system
+muyue install      # Install missing tools
+muyue update       # Check and apply updates
+muyue setup        # Run setup wizard
+muyue config       # Show configuration
+```
+
+## TUI Controls
+
+| Key | Action |
+|-----|--------|
+| `1-4` | Switch tabs |
+| `Tab` | Next tab |
+| `q` / `Ctrl+C` | Quit |
+
+## Configuration
+
+Config stored at `~/.muyue/config.yaml`.
+
+First run launches an interactive profiling wizard that:
+1. Asks your name, pseudo, email
+2. Detects your languages and editor
+3. Chooses your AI provider
+4. Scans your system
+5. Installs missing tools
+
+## Cross-Platform
+
+Built for Linux (primary), macOS, and Windows. WSL supported.
+
+## License
+
+MIT