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.

plugin.go

@@ -6,7 +6,6 @@ import (
 	"embed"
 	"fmt"
 	"io/fs"
-	"log/slog"
 	"net/http"
 	"strings"
 	"time"
@@ -138,7 +137,7 @@ func (p *Plugin) startBlacklistSweep(bl bouncer.BlacklistStore) {
 			select {
 			case <-ticker.C:
 				if err := bl.Sweep(context.Background(), time.Now()); err != nil {
-					slog.Default().Error("golem15.user: jwt blacklist sweep", "err", err)
+					pluginLog.Error("golem15.user: jwt blacklist sweep", "err", err)
 				}
 			case <-stop:
 				return