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_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 {