build(deps): bump pypdf from 6.14.2 to 6.15.0

Bumps [pypdf](https://github.com/py-pdf/pypdf) from 6.14.2 to 6.15.0.
- [Release notes](https://github.com/py-pdf/pypdf/releases)
- [Changelog](https://github.com/py-pdf/pypdf/blob/main/CHANGELOG.md)
- [Commits](https://github.com/py-pdf/pypdf/compare/6.14.2...6.15.0)

---
updated-dependencies:
- dependency-name: pypdf
  dependency-version: 6.15.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "strix-agent"
-version = "1.5.1"
+version = "1.5.2"
 description = "Open-source AI Hackers for your apps"
 readme = "README.md"
 license = "Apache-2.0"

strix/core/runner.py

@@ -430,7 +430,6 @@ async def run_strix_scan(
     except BudgetExceededError as exc:
         logger.info("Scan %s stopped: %s", scan_id, exc)
         if root_id is not None:
-            await coordinator.cancel_descendants(root_id)
             with contextlib.suppress(Exception):
                 await coordinator.set_status(root_id, "stopped")
         return None
@@ -443,26 +442,28 @@ async def run_strix_scan(
             scan_id,
         )
         if root_id is not None:
-            await coordinator.cancel_descendants(root_id)
             with contextlib.suppress(Exception):
                 await coordinator.set_status(root_id, "stopped")
         return None
     except (asyncio.CancelledError, KeyboardInterrupt):
         logger.info("Scan %s interrupted by the user", scan_id)
         if root_id is not None:
-            await coordinator.cancel_descendants(root_id)
             with contextlib.suppress(Exception):
                 await coordinator.set_status(root_id, "running")
         raise
     except BaseException:
         logger.exception("Strix scan %s failed", scan_id)
         if root_id is not None:
-            await coordinator.cancel_descendants(root_id)
             with contextlib.suppress(Exception):
                 await coordinator.set_status(root_id, "failed")
         raise
     finally:
         configure_spill_writer(None)
+        # Settle descendants before closing sessions: on a clean finish a child
+        # can still be mid-turn, and closing its session underneath it crashes it.
+        if root_id is not None:
+            with contextlib.suppress(Exception):
+                await coordinator.cancel_descendants(root_id)
         for s in sessions_to_close:
             with contextlib.suppress(Exception):
                 s.close()

tests/test_runner_teardown.py

@@ -0,0 +1,93 @@
+from __future__ import annotations
+
+import asyncio
+import types
+from typing import Any
+
+import pytest
+from agents import ModelSettings
+
+import strix.tools.notes.tools as notes_tools
+import strix.tools.todo.tools as todo_tools
+from strix.core import runner
+from strix.core.agents import AgentCoordinator
+from strix.runtime import session_manager
+
+
+def _wire_runner(monkeypatch: pytest.MonkeyPatch, tmp_path: Any) -> None:
+    monkeypatch.setattr(runner, "run_dir_for", lambda _scan_id: tmp_path)
+    monkeypatch.setattr(runner, "runtime_state_dir", lambda _run_dir: tmp_path)
+    monkeypatch.setattr(runner, "setup_scan_logging", lambda _run_dir: lambda: None)
+    monkeypatch.setattr(runner, "set_scan_id", lambda _scan_id: None)
+
+    settings = _settings()
+    monkeypatch.setattr(runner, "load_settings", lambda: settings)
+    monkeypatch.setattr(runner, "configure_sdk_model_defaults", lambda _s: None)
+    monkeypatch.setattr(runner, "uses_chat_completions_tool_schema", lambda _m, _s: False)
+    monkeypatch.setattr(todo_tools, "hydrate_todos_from_disk", lambda _d: None)
+    monkeypatch.setattr(notes_tools, "hydrate_notes_from_disk", lambda _d: None)
+
+    async def _create_or_reuse(*_a: Any, **_k: Any) -> dict[str, Any]:
+        return {"client": object(), "session": object(), "caido_client": None}
+
+    async def _cleanup(*_a: Any, **_k: Any) -> None:
+        return None
+
+    monkeypatch.setattr(session_manager, "create_or_reuse", _create_or_reuse)
+    monkeypatch.setattr(session_manager, "cleanup", _cleanup)
+    monkeypatch.setattr(runner, "build_root_task", lambda _c: "task")
+    monkeypatch.setattr(runner, "build_scope_context", lambda _c: "")
+    monkeypatch.setattr(runner, "make_model_settings", lambda *_a, **_k: ModelSettings())
+    monkeypatch.setattr(runner, "build_strix_agent", lambda **_k: object())
+    monkeypatch.setattr(runner, "make_child_factory", lambda **_k: lambda **_kk: object())
+    monkeypatch.setattr(runner, "open_agent_session", lambda _root_id, _db: object())
+
+
+def _settings() -> Any:
+    return types.SimpleNamespace(
+        llm=types.SimpleNamespace(
+            model="openai/gpt-4o",
+            reasoning_effort="high",
+            force_required_tool_choice=False,
+            timeout=300,
+            prompt_cache=True,
+            extra_headers=None,
+        ),
+        runtime=types.SimpleNamespace(max_context_images=3),
+    )
+
+
+@pytest.mark.asyncio
+async def test_a_live_child_is_settled_before_sessions_close(
+    monkeypatch: pytest.MonkeyPatch, tmp_path: Any
+) -> None:
+    _wire_runner(monkeypatch, tmp_path)
+    coordinator = AgentCoordinator()
+    child_started = asyncio.Event()
+    child_task: dict[str, asyncio.Task[None]] = {}
+
+    async def _root_finishes(**kwargs: Any) -> None:
+        root_id = kwargs["agent_id"]
+
+        async def _child_mid_turn() -> None:
+            child_started.set()
+            await asyncio.sleep(3600)
+
+        await coordinator.register("child", "Child", parent_id=root_id)
+        task = asyncio.create_task(_child_mid_turn())
+        child_task["t"] = task
+        await coordinator.attach_runtime("child", task=task)
+        await child_started.wait()
+
+    monkeypatch.setattr(runner, "run_agent_loop", _root_finishes)
+
+    await runner.run_strix_scan(
+        scan_config={"targets": [], "scan_mode": "deep"},
+        scan_id="scan-test",
+        image="img",
+        coordinator=coordinator,
+    )
+
+    task = child_task["t"]
+    assert task.done(), "the child task was left running past scan teardown"
+    assert task.cancelled(), "the child was not cancelled cleanly on a finish"

uv.lock

@@ -1849,11 +1849,11 @@ crypto = [
 
 [[package]]
 name = "pypdf"
-version = "6.14.2"
+version = "6.15.0"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/03/72/7dfd5ff1c9c37de97a731701f51af091325f123d9d4270361c9c69e4431f/pypdf-6.14.2.tar.gz", hash = "sha256:7873f502fe4385e79539b21d872392dc0c4e3714327c15881cbc7fbfd1f95b25", size = 6491182, upload-time = "2026-06-23T14:18:30.859Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/17/17/ee75a92718ec7212de831e71454d702225aa5e474a805cce169806044453/pypdf-6.15.0.tar.gz", hash = "sha256:d39c4d955a76409284a905e2d65b40076d77ab76129e0faaeeb6612403ecfc79", size = 6993794, upload-time = "2026-08-06T13:06:49.929Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/49/e6/136aa8993a2ae7214e0b0ef2edaa0d2e08d1d4e4982635b08a835ff31ec8/pypdf-6.14.2-py3-none-any.whl", hash = "sha256:3f07891af76dc002657e04993ab9b4de81de29f9013b9761d0b7968bff12e946", size = 349514, upload-time = "2026-06-23T14:18:28.867Z" },
+    { url = "https://files.pythonhosted.org/packages/af/72/ce3067ac31e214a66388159f8462ddb8c13dd00170f24d555a1f1ae8ee91/pypdf-6.15.0-py3-none-any.whl", hash = "sha256:14e001d6504822cb1ca9c7ed9a69bccb320f59b320730f55af804361abe4d5ee", size = 378123, upload-time = "2026-08-06T13:06:47.709Z" },
 ]
 
 [[package]]
@@ -2378,7 +2378,7 @@ wheels = [
 
 [[package]]
 name = "strix-agent"
-version = "1.5.1"
+version = "1.5.2"
 source = { editable = "." }
 dependencies = [
     { name = "caido-sdk-client" },