feat: Add crew session cycling fix and daemon exponential backoff (gt-ws8ol)

- Fix crew next/prev: Pass session name via key binding to avoid run-shell context issue
- Add TouchTownActivity() for town-level activity signaling
- Implement daemon exponential backoff based on activity.json:
  - 0-5 min idle → 5 min heartbeat
  - 5-15 min idle → 10 min heartbeat
  - 15-45 min idle → 30 min heartbeat
  - 45+ min idle → 60 min heartbeat (max)

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

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

internal/cmd/crew.go

@@ -273,6 +273,11 @@ func init() {
 	crewCmd.AddCommand(crewRenameCmd)
 	crewCmd.AddCommand(crewPristineCmd)
 	crewCmd.AddCommand(crewRestartCmd)
+
+	// Add --session flag to next/prev commands for tmux key binding support
+	// When run via run-shell, tmux session context may be wrong, so we pass it explicitly
+	crewNextCmd.Flags().StringVarP(&crewCycleSession, "session", "s", "", "tmux session name (for key bindings)")
+	crewPrevCmd.Flags().StringVarP(&crewCycleSession, "session", "s", "", "tmux session name (for key bindings)")
 	crewCmd.AddCommand(crewNextCmd)
 	crewCmd.AddCommand(crewPrevCmd)
 	crewCmd.AddCommand(crewStartCmd)

internal/cmd/crew_cycle.go

@@ -8,16 +8,30 @@ import (
 	"github.com/spf13/cobra"
 )
 
+// crewCycleSession is the --session flag for crew next/prev commands.
+// When run via tmux key binding (run-shell), the session context may not be
+// correct, so we pass the session name explicitly via #{session_name} expansion.
+var crewCycleSession string
+
 // cycleCrewSession switches to the next or previous crew session in the same rig.
 // direction: 1 for next, -1 for previous
-func cycleCrewSession(direction int) error {
-	// Get current session (uses existing function from handoff.go)
-	currentSession, err := getCurrentTmuxSession()
-	if err != nil {
-		return fmt.Errorf("not in a tmux session: %w", err)
-	}
-	if currentSession == "" {
-		return fmt.Errorf("not in a tmux session")
+// sessionOverride: if non-empty, use this instead of detecting current session
+func cycleCrewSession(direction int, sessionOverride string) error {
+	var currentSession string
+	var err error
+
+	if sessionOverride != "" {
+		// Use the provided session name (from tmux key binding)
+		currentSession = sessionOverride
+	} else {
+		// Get current session (uses existing function from handoff.go)
+		currentSession, err = getCurrentTmuxSession()
+		if err != nil {
+			return fmt.Errorf("not in a tmux session: %w", err)
+		}
+		if currentSession == "" {
+			return fmt.Errorf("not in a tmux session")
+		}
 	}
 
 	// Parse rig name from current session
@@ -73,9 +87,9 @@ func cycleCrewSession(direction int) error {
 }
 
 func runCrewNext(cmd *cobra.Command, args []string) error {
-	return cycleCrewSession(1)
+	return cycleCrewSession(1, crewCycleSession)
 }
 
 func runCrewPrev(cmd *cobra.Command, args []string) error {
-	return cycleCrewSession(-1)
+	return cycleCrewSession(-1, crewCycleSession)
 }

internal/cmd/root.go

@@ -22,6 +22,10 @@ across distributed teams of AI agents working on shared codebases.`,
 		// Build command path: gt status, gt mail send, etc.
 		cmdPath := buildCommandPath(cmd)
 		keepalive.TouchWithArgs(cmdPath, args)
+
+		// Also signal town-level activity for daemon exponential backoff
+		// This resets the backoff when any gt command runs
+		keepalive.TouchTownActivity(cmdPath)
 	},
 }