feat: session lifecycle wrapper with manifest capture and session logging

Refactor new/resume/open to use session.Run() which wraps child process launch with pre/post manifest capture and append-only session logging to logs/sessions.log. Bump version to 0.2.0.

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

cmd/new.go

@@ -5,14 +5,15 @@ import (
 
 	"github.com/spf13/cobra"
 	"github.com/warrenronsiek/ctask/internal/config"
+	"github.com/warrenronsiek/ctask/internal/session"
 	"github.com/warrenronsiek/ctask/internal/shell"
 	"github.com/warrenronsiek/ctask/internal/workspace"
 )
 
 var newCmd = &cobra.Command{
-	Use:   "new [title]",
-	Short: "Create a new task workspace and launch the agent",
-	Long:  "Create a new task workspace and launch the agent. If title is omitted, generates task-HHMMSS.",
+	Use:          "new [title]",
+	Short:        "Create a new task workspace and launch the agent",
+	Long:         "Create a new task workspace and launch the agent. If title is omitted, generates task-HHMMSS.",
 	Args:         cobra.MaximumNArgs(1),
 	SilenceUsage: true,
 	RunE:         runNew,
@@ -28,7 +29,7 @@ var (
 
 func init() {
 	newCmd.Flags().StringVarP(&newCategory, "category", "c", "general", "Workspace category subdirectory")
-	newCmd.Flags().BoolVar(&newContainer, "container", false, "Launch in container sandbox (v0.2)")
+	newCmd.Flags().BoolVar(&newContainer, "container", false, "Launch in container sandbox (deferred)")
 	newCmd.Flags().BoolVar(&newShell, "shell", false, "Open interactive shell instead of agent")
 	newCmd.Flags().StringVarP(&newAgent, "agent", "a", "", "Command to exec as the agent")
 	newCmd.Flags().BoolVar(&newNoLaunch, "no-launch", false, "Create workspace only, do not launch")
@@ -72,14 +73,12 @@ func runNew(cmd *cobra.Command, args []string) error {
 
 	envVars := config.EnvVars(ws.Meta.Slug, ws.Meta.Mode, root, ws.Path, ws.Meta.Category)
 
-	if newShell {
-		return shell.ExecShell(ws.Path, envVars, ws.Meta.Slug, ws.Meta.Mode)
-	}
-
-	// Agent mode: print banner and exec
-	for _, line := range shell.BannerLines(ws.Meta.Mode, ws.Meta.Slug, ws.Path) {
-		fmt.Println(line)
-	}
-
-	return shell.ExecAgent(agent, ws.Path, envVars)
+	return session.Run(session.LaunchOpts{
+		WsDir:   ws.Path,
+		EnvVars: envVars,
+		Agent:   agent,
+		Mode:    ws.Meta.Mode,
+		Slug:    ws.Meta.Slug,
+		Shell:   newShell,
+	})
 }

cmd/open.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/spf13/cobra"
 	"github.com/warrenronsiek/ctask/internal/config"
-	"github.com/warrenronsiek/ctask/internal/shell"
+	"github.com/warrenronsiek/ctask/internal/session"
 	"github.com/warrenronsiek/ctask/internal/workspace"
 )
 
@@ -40,6 +40,12 @@ func runOpen(cmd *cobra.Command, args []string) error {
 
 	envVars := config.EnvVars(ws.Meta.Slug, ws.Meta.Mode, root, ws.Path, ws.Meta.Category)
 
-	// Spawn interactive subshell (not agent, not cd in parent)
-	return shell.ExecShell(ws.Path, envVars, ws.Meta.Slug, ws.Meta.Mode)
+	return session.Run(session.LaunchOpts{
+		WsDir:   ws.Path,
+		EnvVars: envVars,
+		Agent:   ws.Meta.Agent,
+		Mode:    ws.Meta.Mode,
+		Slug:    ws.Meta.Slug,
+		Shell:   true, // open always launches shell
+	})
 }

cmd/resume.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/spf13/cobra"
 	"github.com/warrenronsiek/ctask/internal/config"
+	"github.com/warrenronsiek/ctask/internal/session"
 	"github.com/warrenronsiek/ctask/internal/shell"
 	"github.com/warrenronsiek/ctask/internal/workspace"
 )
@@ -26,20 +27,25 @@ var (
 )
 
 func init() {
-	resumeCmd.Flags().BoolVar(&resumeContainer, "container", false, "Resume in container mode (v0.2)")
+	resumeCmd.Flags().BoolVar(&resumeContainer, "container", false, "Resume in container mode (deferred)")
 	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 {
+	return doResume(args[0], resumeContainer, resumeShell, resumeAgent)
+}
+
+// doResume is the shared resume logic used by both resume and last commands.
+func doResume(query string, container, useShell bool, agentOverride string) error {
+	if container {
 		fmt.Println(shell.ContainerNotice())
 		return nil
 	}
 
 	root := config.ResolveRoot()
-	ws := resolveOne(root, args[0], false)
+	ws := resolveOne(root, query, false)
 
 	// Update updated_at
 	now := time.Now().UTC().Truncate(time.Second)
@@ -49,21 +55,19 @@ func runResume(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("updating metadata: %w", err)
 	}
 
-	agent := resumeAgent
+	agent := agentOverride
 	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)
+	return session.Run(session.LaunchOpts{
+		WsDir:   ws.Path,
+		EnvVars: envVars,
+		Agent:   agent,
+		Mode:    ws.Meta.Mode,
+		Slug:    ws.Meta.Slug,
+		Shell:   useShell,
+	})
 }

cmd/root.go

@@ -6,7 +6,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var version = "0.1.0"
+var version = "0.2.0"
 
 var rootCmd = &cobra.Command{
 	Use:   "ctask",