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/root.go

@@ -0,0 +1,66 @@
+package commands
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/muyue/muyue/internal/config"
+	"github.com/muyue/muyue/internal/desktop"
+	"github.com/muyue/muyue/internal/profiler"
+	"github.com/spf13/cobra"
+)
+
+var rootCmd = &cobra.Command{
+	Use:   "muyue",
+	Short: "Muyue is your AI-powered development companion",
+	Long:  `Muyue - A modern development environment with AI assistance, tool management, and seamless desktop integration.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		cfg := loadOrSetupConfig()
+		return desktop.Run(cfg, os.Args[1:])
+	},
+}
+
+func Execute() error {
+	return rootCmd.Execute()
+}
+
+func loadOrSetupConfig() *config.MuyueConfig {
+	if !config.Exists() {
+		fmt.Println("First time setup detected!")
+		cfg, err := profiler.RunFirstTimeSetup()
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Setup error: %v\n", err)
+			os.Exit(1)
+		}
+
+		for i := range cfg.AI.Providers {
+			if cfg.AI.Providers[i].Active && cfg.AI.Providers[i].APIKey == "" {
+				key, err := profiler.AskAPIKey(cfg.AI.Providers[i].Name)
+				if err == nil && key != "" {
+					cfg.AI.Providers[i].APIKey = key
+				}
+			}
+		}
+
+		if err := config.Save(cfg); err != nil {
+			fmt.Fprintf(os.Stderr, "Save error: %v\n", err)
+			os.Exit(1)
+		}
+
+		fmt.Println("\nSetup complete! Starting muyue...")
+		return cfg
+	}
+
+	cfg, err := config.Load()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Config load error: %v\n", err)
+		os.Exit(1)
+	}
+
+	return cfg
+}
+
+func init() {
+	rootCmd.PersistentFlags().Int("port", 8080, "HTTP port for the desktop server")
+	rootCmd.PersistentFlags().Bool("no-open", false, "Don't open browser on startup")
+}