feat: all six CLI commands (new, list, resume, open, info, archive)

Complete command implementations with all flags per spec. Shared query resolution helper.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cmd/resume.go

@@ -0,0 +1,68 @@
+package cmd
+
+import (
+	"fmt"
+	"path/filepath"
+	"time"
+
+	"github.com/spf13/cobra"
+	"github.com/warrenronsiek/ctask/internal/config"
+	"github.com/warrenronsiek/ctask/internal/shell"
+	"github.com/warrenronsiek/ctask/internal/workspace"
+)
+
+var resumeCmd = &cobra.Command{
+	Use:   "resume <query>",
+	Short: "Reopen an existing workspace and launch the agent",
+	Args:  cobra.ExactArgs(1),
+	RunE:  runResume,
+}
+
+var (
+	resumeContainer bool
+	resumeShell     bool
+	resumeAgent     string
+)
+
+func init() {
+	resumeCmd.Flags().BoolVar(&resumeContainer, "container", false, "Resume in container mode (v0.2)")
+	resumeCmd.Flags().BoolVar(&resumeShell, "shell", false, "Open shell instead of agent")
+	resumeCmd.Flags().StringVarP(&resumeAgent, "agent", "a", "", "Override agent command")
+	rootCmd.AddCommand(resumeCmd)
+}
+
+func runResume(cmd *cobra.Command, args []string) error {
+	if resumeContainer {
+		fmt.Println(shell.ContainerNotice())
+		return nil
+	}
+
+	root := config.ResolveRoot()
+	ws := resolveOne(root, args[0], false)
+
+	// Update updated_at
+	now := time.Now().UTC().Truncate(time.Second)
+	ws.Meta.UpdatedAt = now
+	metaPath := filepath.Join(ws.Path, "task.yaml")
+	if err := workspace.WriteMeta(metaPath, ws.Meta); err != nil {
+		return fmt.Errorf("updating metadata: %w", err)
+	}
+
+	agent := resumeAgent
+	if agent == "" {
+		agent = ws.Meta.Agent
+	}
+
+	envVars := config.EnvVars(ws.Meta.Slug, ws.Meta.Mode, root, ws.Path, ws.Meta.Category)
+
+	if resumeShell {
+		return shell.ExecShell(ws.Path, envVars, ws.Meta.Slug, ws.Meta.Mode)
+	}
+
+	// Agent mode
+	for _, line := range shell.BannerLines(ws.Meta.Mode, ws.Meta.Slug, ws.Path) {
+		fmt.Println(line)
+	}
+
+	return shell.ExecAgent(agent, ws.Path, envVars)
+}