feat: add sandboxed code execution with CPU and memory limits.

test_output_v2.txt

@@ -0,0 +1,21 @@
+============================= test session starts =============================
+platform win32 -- Python 3.13.9, pytest-9.0.1, pluggy-1.6.0
+rootdir: \\wsl.localhost\Ubuntu\root\LLMAgentBuilder
+plugins: anyio-4.11.0, langsmith-0.4.42
+collected 4 items / 1 error
+
+=================================== ERRORS ====================================
+_____________________ ERROR collecting tests/test_api.py ______________________
+ImportError while importing test module '\\wsl.localhost\Ubuntu\root\LLMAgentBuilder\tests\test_api.py'.
+Hint: make sure your test modules/packages have valid Python names.
+Traceback:
+C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.2544.0_x64__qbz5n2kfra8p0\Lib\importlib\__init__.py:88: in import_module
+    return _bootstrap._gcd_import(name[level:], package, level)
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+tests\test_api.py:2: in <module>
+    from server.main import app
+E   ModuleNotFoundError: No module named 'server'
+=========================== short test summary info ===========================
+ERROR tests/test_api.py
+!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
+============================== 1 error in 2.48s ===============================

test_output_v3.txt

@@ -0,0 +1,31 @@
+============================= test session starts =============================
+platform win32 -- Python 3.13.9, pytest-9.0.1, pluggy-1.6.0
+rootdir: \\wsl.localhost\Ubuntu\root\LLMAgentBuilder
+plugins: anyio-4.11.0, langsmith-0.4.42
+collected 4 items / 1 error
+
+=================================== ERRORS ====================================
+_____________________ ERROR collecting tests/test_api.py ______________________
+ImportError while importing test module '\\wsl.localhost\Ubuntu\root\LLMAgentBuilder\tests\test_api.py'.
+Hint: make sure your test modules/packages have valid Python names.
+Traceback:
+C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.13_3.13.2544.0_x64__qbz5n2kfra8p0\Lib\importlib\__init__.py:88: in import_module
+    return _bootstrap._gcd_import(name[level:], package, level)
+           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+tests\test_api.py:2: in <module>
+    from server.main import app
+server\main.py:16: in <module>
+    from server.sandbox import run_in_sandbox
+server\sandbox.py:4: in <module>
+    import resource
+E   ModuleNotFoundError: No module named 'resource'
+============================== warnings summary ===============================
+server\models.py:17
+  \\wsl.localhost\Ubuntu\root\LLMAgentBuilder\server\models.py:17: PydanticDeprecatedSince20: Pydantic V1 style `@validator` validators are deprecated. You should migrate to Pydantic V2 style `@field_validator` validators, see the migration guide for more details. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.12/migration/
+    @validator('model')
+
+-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
+=========================== short test summary info ===========================
+ERROR tests/test_api.py
+!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
+========================= 1 warning, 1 error in 2.92s =========================