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/sling.go

@@ -401,7 +401,7 @@ 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)