fix(peek): Support cross-rig crew paths like beads/crew/dave

gt peek now correctly handles crew worker paths by detecting the crew/
prefix and using the proper crew session name format (gt-{rig}-crew-{name}).

Changes:
- Add CaptureSession method to Manager for raw session ID capture
- Detect crew/ prefix in peek command and use CrewSessionName
- Update help text with crew path examples

Fixes: gt-yud21

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

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

internal/cmd/peek.go

@@ -3,7 +3,9 @@ package cmd
 import (
 	"fmt"
 	"strconv"
+	"strings"
 
+	"github.com/steveyegge/gastown/internal/session"
 	"github.com/spf13/cobra"
 )
 
@@ -18,8 +20,8 @@ func init() {
 var peekCmd = &cobra.Command{
 	Use:     "peek <rig/polecat> [count]",
 	GroupID: GroupComm,
-	Short:   "View recent output from a polecat session",
+	Short:   "View recent output from a polecat or crew session",
-	Long: `Capture and display recent terminal output from a polecat session.
+	Long: `Capture and display recent terminal output from an agent session.
 
 This is the ergonomic alias for 'gt session capture'. Use it to check
 what an agent is currently doing or has recently output.
@@ -28,10 +30,15 @@ The nudge/peek pair provides the canonical interface for agent sessions:
   gt nudge - send messages TO a session (reliable delivery)
   gt peek  - read output FROM a session (capture-pane wrapper)
 
+Supports both polecats and crew workers:
+  - Polecats: rig/name format (e.g., greenplace/furiosa)
+  - Crew: rig/crew/name format (e.g., beads/crew/dave)
+
 Examples:
-  gt peek greenplace/furiosa         # Last 100 lines (default)
+  gt peek greenplace/furiosa         # Polecat: last 100 lines (default)
-  gt peek greenplace/furiosa 50      # Last 50 lines
+  gt peek greenplace/furiosa 50      # Polecat: last 50 lines
-  gt peek greenplace/furiosa -n 200  # Last 200 lines`,
+  gt peek beads/crew/dave            # Crew: last 100 lines
+  gt peek beads/crew/dave -n 200     # Crew: last 200 lines`,
 	Args: cobra.RangeArgs(1, 2),
 	RunE: runPeek,
 }
@@ -59,7 +66,18 @@ func runPeek(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	output, err := mgr.Capture(polecatName, lines)
+	var output string
+
+	// Handle crew/ prefix for cross-rig crew workers
+	// e.g., "beads/crew/dave" -> session name "gt-beads-crew-dave"
+	if strings.HasPrefix(polecatName, "crew/") {
+		crewName := strings.TrimPrefix(polecatName, "crew/")
+		sessionID := session.CrewSessionName(rigName, crewName)
+		output, err = mgr.CaptureSession(sessionID, lines)
+	} else {
+		output, err = mgr.Capture(polecatName, lines)
+	}
+
 	if err != nil {
 		return fmt.Errorf("capturing output: %w", err)
 	}

internal/session/manager.go

@@ -395,6 +395,21 @@ func (m *Manager) Capture(polecat string, lines int) (string, error) {
 	return m.tmux.CapturePane(sessionID, lines)
 }
 
+// CaptureSession returns the recent output from a session by raw session ID.
+// Use this for crew workers or other non-polecat sessions where the session
+// name doesn't follow the standard gt-{rig}-{polecat} pattern.
+func (m *Manager) CaptureSession(sessionID string, lines int) (string, error) {
+	running, err := m.tmux.HasSession(sessionID)
+	if err != nil {
+		return "", fmt.Errorf("checking session: %w", err)
+	}
+	if !running {
+		return "", ErrSessionNotFound
+	}
+
+	return m.tmux.CapturePane(sessionID, lines)
+}
+
 // Inject sends a message to a polecat session.
 // Uses a longer debounce delay for large messages to ensure paste completes.
 func (m *Manager) Inject(polecat, message string) error {