- Strictly adhere to the System V AMD64 ABI by skipping the 128-byte "Red Zone" before modifying the stack, see page 23 of https://gitlab.com/x86-psABIs/x86-64-ABI/-/jobs/artifacts/master/raw/x86-64-ABI/abi.pdf?job=build for details. - Added `inject_via_staging` as a fallback strategy: 1. Copies the payload to `/data/local/tmp`. 2. Sets permissions/context (`u:object_r:system_file:s0`). 3. Loads via standard `dlopen`. 4. Immediately unlinks the file for stealth. - Introduced `RegisterRestorer` RAII class to guarantee original registers are restored even if the injection logic returns early due to error.