chore: import upstream snapshot with attribution

tests/resources/agents/async-tools/tools/python/boom_async.py

@@ -0,0 +1,16 @@
+"""boom_async fixture tool (always raises, to exercise the async failure path)."""
+
+from __future__ import annotations
+
+from omnigent_client.tools import tool
+
+
+@tool
+def boom_async() -> str:
+    """
+    Always raise so the failure path of the async pipeline is exercised.
+
+    :raises RuntimeError: Always, with message ``ASYNC_TOOL_BOOM_MARKER``.
+    :returns: Never returns normally.
+    """
+    raise RuntimeError("ASYNC_TOOL_BOOM_MARKER")

tests/resources/agents/async-tools/tools/python/count_chars.py

@@ -0,0 +1,16 @@
+"""count_chars fixture tool (sync; returns character count)."""
+
+from __future__ import annotations
+
+from omnigent_client.tools import tool
+
+
+@tool
+def count_chars(text: str) -> int:
+    """
+    Return the literal character count of ``text``.
+
+    :param text: Text to measure, e.g. ``"abc"``.
+    :returns: Length of ``text``, e.g. ``3``.
+    """
+    return len(text)

tests/resources/agents/async-tools/tools/python/delayed_echo.py

@@ -0,0 +1,23 @@
+"""delayed_echo fixture tool (slow; exercises async dispatch ↔ auto-delivery)."""
+
+from __future__ import annotations
+
+import time
+
+from omnigent_client.tools import tool
+
+
+@tool
+def delayed_echo(label: str) -> str:
+    """
+    Sleep 2s, then echo ``label`` inside an unambiguous marker.
+
+    The delay makes the dispatch -> auto-delivery sequence observable as
+    distinct events; the marker is a distinctive substring so e2e
+    assertions like ``"ECHO_FROM_ASYNC[..." in final_text`` are unambiguous.
+
+    :param label: Text to echo back, e.g. ``"alpha"``.
+    :returns: ``f"ECHO_FROM_ASYNC[{label}]"``.
+    """
+    time.sleep(2)
+    return f"ECHO_FROM_ASYNC[{label}]"