Rename jni layer cpp files

[mohammed-saalim]

Summary

Renamed JNI layer files to better align with their Java counterparts, improving the name mapping between JNI and Java layers as suggested in #10890.

Changes

• Renamed jni_layer.cpp → jni_module.cpp
• Renamed jni_layer_llama.cpp → jni_llm_module.cpp
• Updated all references in:
  • extension/android/CMakeLists.txt
  • extension/android/jni/BUCK
  • extension/android/jni/selective_jni.buck.bzl
  • extension/android/jni/jni_layer_training.cpp

Testing

• Verified zero remaining references to old filenames
• All build file references updated correctly
• Git history preserved via git mv

Fixes #10890

[pytorch-bot]

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[github-actions]

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[Copilot]

Pull request overview

This PR renames the Android JNI C++ entrypoints to better align file names with their Java counterparts (per #10890), and updates build-system references accordingly.

Changes:

• Renamed the core JNI source file reference from jni_layer.cpp to jni_module.cpp across Buck/CMake.
• Renamed the LLM JNI source file reference from jni_layer_llama.cpp to jni_llm_module.cpp across Buck/CMake.
• Updated internal references/comments to reflect the new filenames.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
extension/android/jni/selective_jni.buck.bzl	Updates selective JNI target to point at jni_module.cpp.
extension/android/jni/jni_module.cpp	New/renamed core JNI implementation file.
extension/android/jni/jni_llm_module.cpp	New/renamed LLM JNI implementation file.
extension/android/jni/jni_layer_training.cpp	Updates comment referencing the renamed core JNI file.
extension/android/jni/BUCK	Updates Buck build targets to use renamed JNI sources and export the new filename.
extension/android/CMakeLists.txt	Updates CMake sources list to use renamed JNI sources.

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[meta-codesync]

@kirklandsign has imported this pull request. If you are a Meta employee, you can view this in D93154524.

[mohammed-saalim]

is there something i should work on? @kirklandsign

[Copilot]

Pull request overview

Copilot reviewed 4 out of 6 changed files in this pull request and generated no new comments.

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