Current topic: "Updating Screenshot Documentation"
Topic summary: I have reviewed `GEMINI.md` and `TESTING_SETUP.md`. I will now update `GEMINI.md`'s "Quick Start" section to include the new high-fidelity screenshot command and add a detailed explanation of the `-PscreenshotBuild` flag to the "Screenshot Testing" section of `TESTING_SETUP.md`. This will ensure that developers know how to generate production-representative screenshots for the Play Store.

Strategic Intent: Update documentation files to include the high-fidelity screenshot generation workflow.