Map admins: owners invite friends to co-manage maps

Owners can invite players by name from the map workshop; invitees accept
from their dashboard and then manage the map (details, locations,
submission, refresh, contributions, appeals) through owner-delegated
checks. Adds the map_admins table, invite/admin API endpoints, dashboard
invite box, workshop admin management, and Russian translations.

components/Dashboard.tsx

@@ -11,7 +11,9 @@ import type { MapListing } from "@/lib/catalog";
 import type { ProcessingJob } from "@/shared/processing-progress";
 import { ProcessingProgress } from "./ProcessingProgress";
 import { ImportMap } from "./MapTransfer";
+import { AdminInvites } from "./AdminInvites";
 type Draft = MapListing & {
+  access?: "owner" | "admin";
   upload_jobs: ProcessingJob | null;
 };
 export function Dashboard() {
@@ -128,6 +130,7 @@ export function Dashboard() {
           </Link>
         </div>
       )}
+      <AdminInvites onChange={load} />
       {maps.map((m) => (
         <article className="draft-row" key={m.id}>
           <div>
@@ -135,6 +138,9 @@ export function Dashboard() {
               {m.source === "plugin" ? t("SERVER EXPORT") : t("PLAYER CAPTURE")}
             </span>
             <h3>{m.name}</h3>
+            {m.access === "admin" && (
+              <span className="badge">{t("Map admin")}</span>
+            )}{" "}
             <span className="badge">
               {m.contribution_status
                 ? t("Contribution: {status}", {