fix: misc improvements and dependency updates

- Update nix vendorHash after fatih/color removal
- Bump version to 0.30.7
- Add GroupID to remaining commands for proper cobra grouping
- Apply semantic color rendering to list and stale commands
- Update pre-commit hook template

cmd/bd/migrate_sync.go

@@ -13,9 +13,11 @@ import (
 	"github.com/steveyegge/beads/internal/syncbranch"
 )
 
+// TODO: Consider integrating into 'bd doctor' migration detection
 var migrateSyncCmd = &cobra.Command{
-	Use:   "migrate-sync <branch-name>",
-	Short: "Migrate to sync.branch workflow for multi-clone setups",
+	Use:     "migrate-sync <branch-name>",
+	GroupID: "maint",
+	Short:   "Migrate to sync.branch workflow for multi-clone setups",
 	Long: `Migrate to using a dedicated sync branch for beads data.
 
 This command configures the repository to commit .beads changes to a separate