I'm new to this custom ROM world and you need to teach me how to do it. What it's basically is to complete a LineageOS / AOSP setup for the Google Pixel 6 and 6a that is roughly 80 % complete(get the source code and initial build still needed). The setup preparation need to be continued on a Linux setup already available(call/share screen needed or via messages). The outstanding work is to strip out every non-essential, power-hungry component while keeping the device fully usable as a secure, low-drain communicator. Auto-start custom application needed to be set also and the tests will be done with it. Essential functions that must stay intact • Phone calls & SMS • Wi-Fi & mobile data • Bluetooth & NFC • GPS (hardware access only, no Google location stack) Core sensors that must remain operational • Accelerometer & gyroscope • Proximity sensor • Ambient light sensor What still needs to be removed or strictly disabled • Google Play Services and any remaining Google frameworks • Background apps and services that auto-start • System-level push notifications • Minimize interfaces/theme • Location services frameworks (the goal is GPS fix without the extra analytics layer) Deliverables 1. A Buildable LineageOS / AOSP setup for Pixel 6/6a that meets the above requirements. → done together since we will work on the provided station. 2. Test the build on the target. → done together since we will work on the provided station. 3. A clean, reproducible build script or documented steps so I can rebuild the ROM myself. → done together since we will work on the provided station. 4. A short validation sheet confirming that communications, sensors, and low-power objectives are met (idle drain and wakelock stats). If you have DEEP EXPERIENCE pruning AOSP code, disabling Play Services hooks, and tuning kernel or device trees for battery life, your expertise will wrap up this project quickly and cleanly.