Add map import and export with durable refresh progress

scripts/test-map-sharing-sql.mjs

@@ -0,0 +1,22 @@
+import { readFile, readdir } from "node:fs/promises";
+import { PGlite } from "../.data/sql-verification/node_modules/@electric-sql/pglite/dist/index.js";
+const db = new PGlite();
+try {
+  await db.exec(`create role anon; create role authenticated; create role service_role;
+    create schema auth; create table auth.users(id uuid primary key);
+    create function auth.uid() returns uuid language sql as $$ select null::uuid $$;
+    create schema storage; create table storage.buckets(id text primary key,name text,public boolean,file_size_limit bigint);`);
+  for (const file of (await readdir("supabase/migrations"))
+    .filter((f) => f.endsWith(".sql"))
+    .sort())
+    await db.exec(await readFile(`supabase/migrations/${file}`, "utf8"));
+  await db.exec(await readFile("tests/sql/map-sharing.sql", "utf8"));
+  console.log(
+    "Map sharing SQL passed: private solo/rooms, owner attribution, publication blocked, original owner can submit.",
+  );
+} catch (error) {
+  console.error(error.message, error.where ?? "");
+  process.exitCode = 1;
+} finally {
+  await db.close();
+}