feat: add Cobra CLI, LSP/MCP registries, workflow engine, and enriched dashboard

Major changes:
- Refactor CLI entry point to Cobra commands (root, setup, scan, doctor, install, update, lsp, mcp, skills, config, version)
- Add LSP registry with health checks, auto-install, and editor config generation
- Add MCP registry with editor detection, status tracking, and per-editor configuration
- Add workflow engine with planner and step execution for automated task chains
- Add conversation search, export (Markdown/JSON), and detailed token counting
- Add streaming shell chat handler with tool call/result events
- Add skill validation, dry-run testing, and export endpoints
- Enrich dashboard with Tools/Activity/Status tabs and tool cards grid
- Add PRD documentation
- Complete i18n for both EN and FR

💘 Generated with Crush

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

cmd/muyue/commands/mcp.go

@@ -0,0 +1,54 @@
+package commands
+
+import (
+	"fmt"
+
+	"github.com/muyue/muyue/internal/config"
+	"github.com/muyue/muyue/internal/mcp"
+	"github.com/spf13/cobra"
+)
+
+var mcpCmd = &cobra.Command{
+	Use:   "mcp",
+	Short: "MCP management",
+}
+
+func init() {
+	rootCmd.AddCommand(mcpCmd)
+	mcpCmd.AddCommand(&cobra.Command{
+		Use:   "config",
+		Short: "Generate MCP configs for Crush + Claude Code",
+		RunE:  runMCPConfig,
+	})
+	mcpCmd.AddCommand(&cobra.Command{
+		Use:   "scan",
+		Short: "Scan available MCP servers",
+		RunE:  runMCPScan,
+	})
+}
+
+func runMCPConfig(cmd *cobra.Command, args []string) error {
+	cfg, err := config.Load()
+	if err != nil {
+		return err
+	}
+	if err := mcp.ConfigureAll(cfg); err != nil {
+		return err
+	}
+	fmt.Println("MCP configs generated for Crush and Claude Code")
+	return nil
+}
+
+func runMCPScan(cmd *cobra.Command, args []string) error {
+	servers := mcp.ScanServers()
+	fmt.Printf("%-25s %-15s %-10s\n", "Name", "Category", "Status")
+	fmt.Println("──────────────────────────────────────────")
+	for _, s := range servers {
+		status := "✗ missing"
+		if s.Installed {
+			status = "✓ installed"
+		}
+		fmt.Printf("%-25s %-15s %-10s\n", s.Name, s.Category, status)
+	}
+	return nil
+}