feat(mayor): add delegation hierarchy guidance to role template

Add explicit guidance on the Mayor → Crew → Polecats delegation model:
- Crew are coordinators for epics/goals needing decomposition
- Polecats are executors for well-defined tasks
- Include decision framework table for work type routing

Closes: gt-9jd

internal/cmd/convoy.go

@@ -78,6 +78,7 @@ var (
 	convoyCloseReason  string
 	convoyCloseNotify  string
 	convoyCheckDryRun  bool
+	convoyEpic         string // --epic: link convoy to parent epic (Goals layer)
 )
 
 var convoyCmd = &cobra.Command{

internal/cmd/sling.go

@@ -398,7 +398,7 @@ func runSling(cmd *cobra.Command, args []string) error {
 				fmt.Printf("Would create convoy 'Work: %s'\n", info.Title)
 				fmt.Printf("Would add tracking relation to %s\n", beadID)
 			} else {
-				convoyID, err := createAutoConvoy(beadID, info.Title)
+				convoyID, err := createAutoConvoy(beadID, info.Title, slingEpic)
 				if err != nil {
 					// Log warning but don't fail - convoy is optional
 					fmt.Printf("%s Could not create auto-convoy: %v\n", style.Dim.Render("Warning:"), err)

internal/cmd/sling_batch.go

@@ -87,7 +87,7 @@ func runBatchSling(beadIDs []string, rigName string, townBeadsDir string) error
 		if !slingNoConvoy {
 			existingConvoy := isTrackedByConvoy(beadID)
 			if existingConvoy == "" {
-				convoyID, err := createAutoConvoy(beadID, info.Title)
+				convoyID, err := createAutoConvoy(beadID, info.Title, slingEpic)
 				if err != nil {
 					fmt.Printf("  %s Could not create auto-convoy: %v\n", style.Dim.Render("Warning:"), err)
 				} else {

internal/cmd/sling_convoy.go

@@ -61,8 +61,9 @@ func isTrackedByConvoy(beadID string) string {
 }
 
 // createAutoConvoy creates an auto-convoy for a single issue and tracks it.
+// If epicID is provided, links the convoy to the parent epic.
 // Returns the created convoy ID.
-func createAutoConvoy(beadID, beadTitle string) (string, error) {
+func createAutoConvoy(beadID, beadTitle string, epicID string) (string, error) {
 	townRoot, err := workspace.FindFromCwd()
 	if err != nil {
 		return "", fmt.Errorf("finding town root: %w", err)
@@ -77,6 +78,9 @@ func createAutoConvoy(beadID, beadTitle string) (string, error) {
 	// Create convoy with title "Work: <issue-title>"
 	convoyTitle := fmt.Sprintf("Work: %s", beadTitle)
 	description := fmt.Sprintf("Auto-created convoy tracking %s", beadID)
+	if epicID != "" {
+		description += fmt.Sprintf("\nParent-Epic: %s", epicID)
+	}
 
 	createArgs := []string{
 		"create",
@@ -109,6 +113,19 @@ func createAutoConvoy(beadID, beadTitle string) (string, error) {
 		fmt.Printf("%s Could not add tracking relation: %v\n", style.Dim.Render("Warning:"), err)
 	}
 
+	// Link convoy to parent epic if specified (Goals layer)
+	if epicID != "" {
+		epicDepArgs := []string{"--no-daemon", "dep", "add", convoyID, epicID, "--type=child_of"}
+		epicDepCmd := exec.Command("bd", epicDepArgs...)
+		epicDepCmd.Dir = townBeads
+		epicDepCmd.Stderr = os.Stderr
+
+		if err := epicDepCmd.Run(); err != nil {
+			// Epic link failed - log warning but continue
+			fmt.Printf("%s Could not link convoy to epic: %v\n", style.Dim.Render("Warning:"), err)
+		}
+	}
+
 	return convoyID, nil
 }