feat: add CUDA benchmark CLI and shared search algorithms

.gitignore

@@ -1,2 +1,50 @@
-slime
-slime-cuda
+# Local build output (source assembly snapshots are intentionally retained).
+bin/
+build/
+cmake-build-*/
+*.o
+*.obj
+*.a
+*.so
+*.dll
+*.exe
+*.d
+*.ptx
+*.cubin
+*.fatbin
+/slime
+/slime-cuda
+/sliming
+/codex/slime_cpu
+/codex/slime_cuda
+
+# Python environments and caches.
+__pycache__/
+*.py[cod]
+.venv/
+venv/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+
+# Temporary logs and scratch files, not benchmark JSON or research fixtures.
+*.log
+*.stderr
+*.tmp
+*.swp
+*.swo
+*~
+/exp/*.smt2
+/artifacts/
+
+# Machine-local configuration and credentials.
+.env
+.env.*
+!.env.example
+/.aws/
+/.codex/
+/.agents/
+/.idea/
+/.vscode/
+.DS_Store
+Thumbs.db