Third-party notices

• bsdiff/bspatch — Copyright 2003–2005 Colin Percival. The redistribution conditions and disclaimer are retained in ApkPatchLibraryServer/jni/com_cundong_utils_DiffUtils.c and ApkPatchLibrary/src/main/cpp/bspatch.c.
• bzip2 — Copyright Julian Seward and contributors. Original notices are retained in ApkPatchLibrary/src/main/cpp/bzip2/ and the complete license in licenses/bzip2-1.0.6.txt; both host and Android builds use this one copy.
• Gradle Wrapper — Apache-2.0; generated wrapper scripts retain their notices.

The locally supplied Taobao APKs are external test inputs, excluded from version control and CI artifacts. The project's Apache-2.0 license does not relicense those APKs.