chore(scripts): mark the shebang-carrying Python scripts executable

Xem xét tám tệp được liệt kê có chứa shebang trong scripts/ và so sánh mode của chúng với scripts/ci/.py và scripts/bench_mlxlm.py. Áp dụng bit thực thi trong index, sau đó chạy git ls-files -s scripts/**/.py để xác minh mọi script có chứa shebang đều là 100755. Kiểm tra ba tệp không có shebang và ghi lại liệu chúng vẫn không thể thực thi hay được chuẩn hóa.

Summary

Eight Python scripts under scripts/ carry a #!/usr/bin/env python3 shebang but are not executable in the index, so the direct invocation some of them document for themselves fails with "permission denied".

Background

The scripts/ci/*.py files (and scripts/bench_mlxlm.py) are already mode 100755, so the executable convention is established. The affected files sit at 100644 despite their shebang. scripts/bench_embeddings.py:9 documents its own invocation as scripts/bench_embeddings.py --bin target/release/mlxcel-server ..., which cannot run today.

Proposed Solution

Set the executable bit in the index with git update-index --chmod=+x (or chmod +x then commit) on the shebang-carrying files. Verify with git ls-files -s scripts/**/*.py.

Implementation Notes

• Non-executable despite a shebang: scripts/bench_embeddings.py, scripts/benchmark_gemma3n_python.py, scripts/benchmark_llama3_python.py, scripts/benchmark_python.py, scripts/bridge_overhead_microbench_py.py, scripts/gather_qmm_shape_microbench.py, scripts/layer_shaped_microbench_py.py, scripts/requantize_mlp.py (confirmed 100644 for the sampled files).
• Separately, scripts/insert_apache_header.py, scripts/tools/internlm_rope_oracle.py, and scripts/tools/quantize_mtp_drafter.py have neither a shebang nor +x. Decide whether to normalize them or leave them as python3 <file> only.

Acceptance Criteria

• Every scripts/**/*.py with a shebang is executable in the index
• The three shebang-less files are either normalized or explicitly left alone with a note in the PR

Original Suggestion

Title: chore(scripts): make the shebang'd Python scripts executable

Ten Python scripts under scripts/ carry a #!/usr/bin/env python3 shebang but are not executable, so the invocation some of them document for themselves fails with "permission denied". Every scripts/ci/*.py (and scripts/bench_mlxlm.py) is +x, so the convention is established.

Evidence

Non-executable despite a shebang: scripts/bench_embeddings.py, scripts/benchmark_gemma3n_python.py, scripts/benchmark_llama3_python.py, scripts/benchmark_python.py, scripts/bridge_overhead_microbench_py.py, scripts/gather_qmm_shape_microbench.py, scripts/layer_shaped_microbench_py.py, scripts/requantize_mlp.py.

scripts/bench_embeddings.py:9 documents its own invocation as scripts/bench_embeddings.py --bin target/release/mlxcel-server ..., which fails today.

Separately, scripts/insert_apache_header.py, scripts/tools/internlm_rope_oracle.py, and scripts/tools/quantize_mtp_drafter.py have neither a shebang nor +x — decide whether to bring them in line or leave them as python3 <file>-only.

Suggested fix

git update-index --chmod=+x on the shebang'd files (or chmod +x + commit). Purely mechanical; verify with git ls-files -s scripts/*.py.

Acceptance criteria

• Every scripts/**/*.py with a shebang is executable in the index
• The three shebang-less files are either normalized or explicitly left alone with a note in the PR