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.

controllers/api/posts_search.go

@@ -1,7 +1,6 @@
 package api
 
 import (
-	"log/slog"
 	"net/http"
 	"strconv"
 
@@ -38,7 +37,7 @@ func searchWithEngine(app *backpack.App, r *http.Request, db *gorm.DB, search st
 	}
 	res, err := beachcomber.SearchPage(r.Context(), svc.Engine(), svc.IndexName(&models.Post{}), q)
 	if err != nil {
-		slog.Default().Warn("journal: Typesense search failed, falling back to DB search", "err", err)
+		pluginLog.Warn("journal: Typesense search failed, falling back to DB search", "err", err)
 		return nil, false
 	}
 	ids := make([]uint, 0, len(res.IDs))