Update llama.cpp submodule to 3e4bb29

[github-actions]

A new version of llama.cpp is available. Please update the submodule from f47edb8 to 3e4bb29 and make necessary adjustments.

Step 1: Update the submodule

cd llama.cpp
git fetch origin master
git checkout origin/master
cd ..
git add llama.cpp

Step 2: Verify and update patches

• Review the patches in llama.cpp.patches/patches/
• Check if each patch still applies cleanly to the new llama.cpp version
• Update any patches that have conflicts due to upstream changes
• Run the patch application script to verify:

  cd llama.cpp.patches && ./apply-patches.sh

Step 3: Update BUILD.mk dependencies

• Review llama.cpp/BUILD.mk for any new source files or dependencies added upstream
• Remove references to any deleted source files
• Ensure all new dependencies are properly included
• Check the upstream changes for new/removed files in llama.cpp/src/, llama.cpp/common/, llama.cpp/ggml/

Step 4: Update llamafile integration code

• Check if the llamafile code that calls llama.cpp server/main needs updates
• Review llamafile/ for any API changes in llama.cpp that need to be reflected
• Pay attention to changes in llama.cpp/include/ for API modifications

Verification

After making changes, verify the build works:

make clean
make -j$(nproc)

Reference

• Upstream changes: ggml-org/llama.cpp@f47edb8...3e4bb29
• Example PR with similar updates: Update llama.cpp to f47edb8 #847

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This issue was automatically created by the update-llama-cpp workflow.