feat: console help, examples and named loggers (SummerCMS v0.4.0)

Every command gets long help and examples, descriptions in imperative
sentence case, and a warn-only TestCommandsDocumented over bonfire.CheckDocs.
The plugin logs through a diary component logger instead of the process
default logger. Requires SummerCMS v0.4.0; command names and flags unchanged.

user:token:create and user:token:list gain --json, user:backfill-handles a
progress bar; planning IDs leave the descriptions.

classes/avatar.go

@@ -5,7 +5,6 @@ import (
 	"crypto/md5"
 	"errors"
 	"fmt"
-	"log/slog"
 	"strconv"
 	"strings"
 
@@ -52,7 +51,7 @@ func AvatarURL(ctx context.Context, app *backpack.App, user *models.User, size i
 	}
 	url, err := f.Thumb(ctx, bucket, size, size, "auto")
 	if err != nil {
-		slog.Default().Error("golem15.user: avatar thumb", "err", err)
+		pluginLog.Error("golem15.user: avatar thumb", "err", err)
 		return "/" + attach.BlobKey(f.DiskName), nil
 	}
 	return url, nil