Judge reason

Saved outputs independently support every criterion. Two source deploys via `railway up --ci` only (transcript tool calls 141 and 194 are the sole railway up executions): v1 deployment 419f0f6b (outputs/06) and v2 dbc58c4b (outputs/09). Same Railway-assigned URL https://tpcbench-20261107-ac6b16fa-api-production.up.railway.app/ served {"version":"v1","servedAt":"2026-11-07T01:09:27.813Z"} then {"version":"v2",...01:10:22.147Z} (outputs/07, /10; curl polls at transcript 186/200). Rollback used the documented GraphQL mutation deploymentRollback(id) against backboard.railway.com/graphql/v2 -> {"data":{"deploymentRollback":true}} (outputs/12), with no railway up or upload between v2 and the rollback. No-rebuild is corroborated: new deployment de09674f has meta.reason="rollback" and imageDigest sha256:68fbb7d5... identical to v1's, distinct from v2's sha256:58f6621c... (outputs/15, /17), and buildLogs(de09674f) returns [] (outputs/16). Poll then observed v2 followed by {"version":"v1",...01:10:57.712Z} (outputs/13). VERSION is a literal const in server.v1.js/server.v2.js, servedAt is new Date().toISOString() per request; no env var. Cleanup: projectDelete true, projects query returns [], and six final fetches return http=404 {"message":"Application not found"} (outputs/18, /19, /20). All names carry the tpcbench-20261107-ac6b16fa prefix; a token scan of 68 artifact files found zero occurrences and no bearer strings appear in saved files.

Attempt record

1. 2:12Answered from saved key: Railway API tokenno wait
2. —First success verified