What was done
Gemini read decompiled Smali from Kyocera's framework and rebuilt the softkey guide API as Java, which the author used to fix a softkey quirk in his podcast app. The run cost about 47K tokens (~$0.05).
Where the human stepped in
The author pulled and decompiled the APKs, picked the candidate class and tested on real phones. Several reconstructed methods were stubs, some labels were inferred rather than verified, and the listener method needed extra searching.