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/admin_actions.go

@@ -3,7 +3,6 @@ package classes
 import (
 	"context"
 	"fmt"
-	"log/slog"
 	"strconv"
 	"time"
 
@@ -241,7 +240,7 @@ func ForceDeleteCleanup(ctx context.Context, db *gorm.DB, bucket *blob.Bucket, u
 		// The rows are gone by now, so a blob that cannot be removed is
 		// orphaned, not lost data: log it and carry on.
 		if err := attach.DeleteKeys(ctx, bucket, keys); err != nil {
-			slog.Default().Warn("golem15.user: remove attachment blobs of a deleted user", "user_id", userID, "err", err)
+			pluginLog.Warn("golem15.user: remove attachment blobs of a deleted user", "user_id", userID, "err", err)
 		}
 	})
 	return nil