feat(smolagents-daytona): smolagents DaytonaExecutor

[mislavivanda]

Summary by cubic

Adds the smolagents-daytona package, a Daytona sandbox executor for smolagents CodeAgents. Installing it registers the daytona executor type via entry point, so CodeAgent(executor_type="daytona") runs generated code in an isolated, stateful sandbox.

Bug fixes

• The executor inherits the upstream install_packages fix that puts user-site before system site-packages, so the earlier local override was dropped.

CI and release

• Adds lint, unit, and live integration test jobs; the live E2E test drives the documented CodeAgent context-manager usage and asserts sys.path ordering in a real sandbox.
• Registers the package for release-please and updates the README table.
• Until smolagents>=1.27.0 ships, CI installs smolagents from a specific commit and uses --no-deps.

^{Written for commit f460970. Summary will update on new commits.}

[cubic-dev-ai]

All reported issues were addressed across 15 files

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[cubic-dev-ai]

All reported issues were addressed across 3 files (changes from recent commits).

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[cubic-dev-ai]

1 issue found across 4 files (changes from recent commits).

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="packages/smolagents-daytona/tests/unit_tests/test_executor.py">

<violation number="1" location="packages/smolagents-daytona/tests/unit_tests/test_executor.py:171">
P3: This delta drops the local `install_packages` override and makes the test assert on the exact private implementation of the inherited smolagents base-class method, hard-coupling the unit test to upstream internals (`"site.getusersitepackages()"`, `"sys.path.insert"`, `"getsitepackages"`, `"importlib.invalidate_caches()"`, and `not "sys.path.append"`). The upstream base-class default is still being actively refined (the correct snippet is being sent to huggingface/smolagents#2724 per the PR discussion), so a benign upstream refactor to a different but equally valid mechanism (e.g. `site.addusersitepackages()` or a named helper) will break CI even though the runtime behavior stays correct. Prefer asserting the observable contract (installed packages importable, order of `user_site` vs system site on `sys.path`) over matching the generated source text.</violation>
</file>

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Re-trigger cubic</sub>

[cubic-dev-ai]

P3: This delta drops the local install_packages override and makes the test assert on the exact private implementation of the inherited smolagents base-class method, hard-coupling the unit test to upstream internals ("site.getusersitepackages()", "sys.path.insert", "getsitepackages", "importlib.invalidate_caches()", and not "sys.path.append"). The upstream base-class default is still being actively refined (the correct snippet is being sent to huggingface/smolagents#2724 per the PR discussion), so a benign upstream refactor to a different but equally valid mechanism (e.g. site.addusersitepackages() or a named helper) will break CI even though the runtime behavior stays correct. Prefer asserting the observable contract (installed packages importable, order of user_site vs system site on sys.path) over matching the generated source text.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At packages/smolagents-daytona/tests/unit_tests/test_executor.py, line 171:

<comment>This delta drops the local `install_packages` override and makes the test assert on the exact private implementation of the inherited smolagents base-class method, hard-coupling the unit test to upstream internals (`"site.getusersitepackages()"`, `"sys.path.insert"`, `"getsitepackages"`, `"importlib.invalidate_caches()"`, and `not "sys.path.append"`). The upstream base-class default is still being actively refined (the correct snippet is being sent to huggingface/smolagents#2724 per the PR discussion), so a benign upstream refactor to a different but equally valid mechanism (e.g. `site.addusersitepackages()` or a named helper) will break CI even though the runtime behavior stays correct. Prefer asserting the observable contract (installed packages importable, order of `user_site` vs system site on `sys.path`) over matching the generated source text.</comment>

<file context>
@@ -168,13 +168,15 @@ def test_final_answer_exception_base_renders_exception_subclass(self):
 
-    def test_install_packages_repairs_user_site_visibility(self):
-        """Packages must be importable by the live interpreter, not just pip-installed.
+    def test_inherited_install_packages_repairs_user_site_visibility(self):
+        """The inherited smolagents default must keep user-site packages importable.
 
</file context>