fix(database): respect Workers PBKDF2 iteration limit

scripts/test-cloud.mjs

@@ -111,6 +111,8 @@ const setup = await call("/api/db-admin/setup", "POST", {
   username: "lifeos-admin", password: "local test password with 28 chars", acknowledged: true
 });
 assert.equal(setup.status, 200);
+assert.equal(sqlite.prepare("SELECT iterations FROM lifeos_admin_credentials WHERE user_id = ?").get("alice").iterations, 100_000,
+  "password hashing stays within the deployed Workers PBKDF2 limit");
 assert.equal((await call("/api/db-admin/config")).body.configured, true);
 assert.equal((await call("/api/db-admin/setup", "POST", { username: "lifeos-admin", password: "replacement password 123", acknowledged: true })).status, 409);
 assert.equal((await call("/api/db-admin/tables/tasks/rows", "GET", undefined, { ...headers, "x-lifeos-admin-session": setup.body.token })).status, 200);