feat: Add gt crew start command as alias for gt start crew

Users naturally expect "gt crew start <name>" to work alongside
"gt start crew <name>". This adds the alias, handling all input
formats: "name", "rig/name", and "rig/crew/name".

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/cmd/crew.go

@@ -30,6 +30,7 @@ Unlike polecats which are witness-managed and transient, crew workers are:
 - Tmux optional: Can work in terminal directly
 
 Commands:
+  gt crew start <name>     Start a crew workspace (creates if needed)
   gt crew add <name>       Create a new crew workspace
   gt crew list             List crew workspaces with status
   gt crew at <name>        Attach to crew workspace session
@@ -211,6 +212,25 @@ var crewPrevCmd = &cobra.Command{
 	RunE:   runCrewPrev,
 }
 
+var crewStartCmd = &cobra.Command{
+	Use:   "start <name>",
+	Short: "Start a crew workspace (creates if needed)",
+	Long: `Start a crew workspace, creating it if it doesn't exist.
+
+This is an alias for 'gt start crew'. It combines 'gt crew add' and 'gt crew at --detached'.
+The crew session starts in the background with Claude running and ready.
+
+The name can include the rig in slash format (e.g., gastown/joe).
+If not specified, the rig is inferred from the current directory.
+
+Examples:
+  gt crew start joe                    # Start joe in current rig
+  gt crew start gastown/joe            # Start joe in gastown rig
+  gt crew start joe --rig beads        # Start joe in beads rig`,
+	Args: cobra.ExactArgs(1),
+	RunE: runCrewStart,
+}
+
 func init() {
 	// Add flags
 	crewAddCmd.Flags().StringVar(&crewRig, "rig", "", "Rig to create crew workspace in")
@@ -240,6 +260,9 @@ func init() {
 
 	crewRestartCmd.Flags().StringVar(&crewRig, "rig", "", "Rig to use")
 
+	crewStartCmd.Flags().StringVar(&crewRig, "rig", "", "Rig to use")
+	crewStartCmd.Flags().StringVar(&crewAccount, "account", "", "Claude Code account handle to use")
+
 	// Add subcommands
 	crewCmd.AddCommand(crewAddCmd)
 	crewCmd.AddCommand(crewListCmd)
@@ -252,6 +275,7 @@ func init() {
 	crewCmd.AddCommand(crewRestartCmd)
 	crewCmd.AddCommand(crewNextCmd)
 	crewCmd.AddCommand(crewPrevCmd)
+	crewCmd.AddCommand(crewStartCmd)
 
 	rootCmd.AddCommand(crewCmd)
 }

internal/cmd/crew_lifecycle.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strings"
 	"time"
 
 	"github.com/spf13/cobra"
@@ -155,6 +156,26 @@ func runCrewRefresh(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
+// runCrewStart is an alias for runStartCrew, handling multiple input formats.
+// It supports: "name", "rig/name", and "rig/crew/name" formats.
+func runCrewStart(cmd *cobra.Command, args []string) error {
+	name := args[0]
+
+	// Handle rig/crew/name format (e.g., "gastown/crew/joe" -> "gastown/joe")
+	if strings.Contains(name, "/crew/") {
+		parts := strings.SplitN(name, "/crew/", 2)
+		if len(parts) == 2 && parts[0] != "" && parts[1] != "" {
+			name = parts[0] + "/" + parts[1]
+		}
+	}
+
+	// Set the start.go flags from crew.go flags before calling
+	startCrewRig = crewRig
+	startCrewAccount = crewAccount
+
+	return runStartCrew(cmd, []string{name})
+}
+
 func runCrewRestart(cmd *cobra.Command, args []string) error {
 	name := args[0]
 	// Parse rig/name format (e.g., "beads/emma" -> rig=beads, name=emma)