Rebuild: edge:bench, and its result in the spec (TypeScript is fast enough)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

start/env.ts

@@ -34,4 +34,11 @@ export default await Env.create(new URL('../', import.meta.url), {
   DB_POOL_MAX: Env.schema.number.optional(),
   DB_SEARCH_PATH: Env.schema.string.optional(),
   DB_DEBUG: Env.schema.boolean.optional(),
+
+  // NNTP (the coordinator's relay; edge:bench --capture)
+  NNTP_HOST: Env.schema.string.optional(),
+  NNTP_PORT: Env.schema.number.optional(),
+  NNTP_USER: Env.schema.string.optional(),
+  NNTP_PASSWORD: Env.schema.string.optional(),
+  NNTP_SECURE: Env.schema.boolean.optional(),
 })