chore: bump version to 0.2.1, update README for TUI redesign

- Document 4-tab layout (Dashboard, Studio, Shell, Config)
- Add keyboard shortcuts table for new tabs
- Update version references from 0.2.0 to 0.2.1

💘 Generated with Crush

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

README.md

@@ -76,25 +76,49 @@ muyue skills deploy         # Deploy skills to Crush and Claude Code
 muyue skills delete <name>  # Delete a skill
 ```
 
-## TUI Controls
+## TUI — 4 Tabs
 
-| Key | Action |
+The TUI is organized into 4 tabs with a red/rose theme (`#E8364F` → `#FF6B8A`):
-|-----|--------|
-| `Ctrl+T` | Open tab switcher |
-| `Tab` / `Shift+Tab` | Cycle tabs |
-| `Ctrl+C` | Quit confirmation |
-| `i` (Dashboard) | Install missing tools |
-| `u` (Dashboard) | Check for updates |
-| `s` (Dashboard) | Rescan system |
-| `a` (Workflow) | Approve plan |
-| `r` (Workflow) | Reject plan |
-| `g` (Workflow) | Generate plan |
-| `n` (Workflow) | Next step |
-| `x` (Workflow) | Cancel workflow |
 
-### Chat Commands
+### ◉ Dashboard
 
-- `/plan <goal>` — Start a structured Plan→Execute workflow
+System overview: installed tools with status, active agents, updates, LSP/MCP/daemon status, and quick actions (install, update, scan).
+
+### ◈ Studio
+
+Central AI chat with a collapsible sidebar (`Ctrl+S`) containing 3 panels:
+
+| Panel | Shortcut | Description |
+|-------|----------|-------------|
+| **Chat** | `1` | AI conversation, `/plan <goal>` to start workflows |
+| **Agents** | `2` | Start/stop Crush and Claude Code agents |
+| **Workflows** | `3` | Plan→Execute workflow controls (approve, reject, next step) |
+
+### ▶ Shell
+
+Split-view terminal with an AI assistant panel (`Ctrl+A` to toggle). The AI knows your system and suggests commands you can easily copy into the terminal.
+
+### ⚙ Config
+
+Profile, API providers, terminal/starship settings, BMAD, and skills — displayed in a two-column layout.
+
+### Keyboard Shortcuts
+
+| Key | Context | Action |
+|-----|---------|--------|
+| `Ctrl+T` | Global | Open tab switcher |
+| `Ctrl+S` | Studio | Toggle sidebar |
+| `Ctrl+A` | Shell | Toggle AI assistant panel |
+| `Ctrl+C` | Global | Quit confirmation |
+| `i` | Dashboard | Install missing tools |
+| `u` | Dashboard | Check for updates |
+| `s` | Dashboard | Rescan system |
+| `1` `2` `3` | Studio sidebar | Switch panels (Chat/Agents/Workflows) |
+| `a` | Workflow | Approve plan |
+| `r` | Workflow | Reject plan |
+| `g` | Workflow | Generate plan |
+| `n` | Workflow | Next step |
+| `x` | Workflow | Cancel workflow |
 
 ## Configuration
 
@@ -179,7 +203,7 @@ git push -u origin feature/my-feature
 
 ```bash
 # 1. Bump the version in internal/version/version.go
-#    Change: Version = "0.2.0"  →  Version = "0.3.0"
+#    Change: Version = "0.2.1"  →  Version = "0.3.0"
 #    Commit on develop:
 git checkout develop
 # (edit internal/version/version.go)
@@ -222,7 +246,7 @@ git push
 
 ```go
 const (
-    Version = "0.2.0"  // ← bump this before a release
+    Version = "0.2.1"  // ← bump this before a release
 )
 ```
 
@@ -236,11 +260,11 @@ Binary version is injected at build time via `-ldflags`:
 ```bash
 # Beta build (automatic in CI)
 go build -ldflags="-X github.com/muyue/muyue/internal/version.Prerelease=beta.3" ./cmd/muyue/
-# → muyue v0.2.0-beta.3
+# → muyue v0.2.1-beta.3
 
 # Stable build (automatic in CI)
 go build -ldflags="-s -w" ./cmd/muyue/
-# → muyue v0.2.0
+# → muyue v0.2.1
 ```
 
 ### Conventional commits

internal/version/version.go

@@ -2,7 +2,7 @@ package version
 
 const (
 	Name    = "muyue"
-	Version = "0.2.0"
+	Version = "0.2.1"
 	Author  = "La Légion de Muyue"
 	License = "MIT"
 )