Revert "refactor: clean up legacy code, rename hopper to entity_extractor, and add third-party notices"

This reverts commit 54fcef9887.

Please do not submit unrelated docs and codes in the same commit. I am reverting this commit so that the related files can be submitted in better-organized future commits.

tests/unit/agents/test_entity_extractor.py

@@ -1,76 +0,0 @@
-# Copyright 2026 Google LLC
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Unit tests for Artemis entity extraction and package resolver."""
-
-from unittest.mock import AsyncMock, MagicMock, patch
-import pytest
-
-from artemis.agents.entity_extractor.entity_extractor import (
-    ExtractionResult,
-    extract_entity,
-)
-
-
-def test_extraction_result_model():
-    """Verify ExtractionResult attributes and validation."""
-    res = ExtractionResult(found=True, output="com.google.android.apps.nexuslauncher", reason="Exact match")
-    assert res.found is True
-    assert res.output == "com.google.android.apps.nexuslauncher"
-    assert res.reason == "Exact match"
-
-
-@pytest.mark.asyncio
-async def test_extract_entity_success():
-    """Verify successful LLM entity extraction invocation."""
-    mock_ctx = MagicMock()
-    mock_llm = MagicMock()
-    expected_result = ExtractionResult(
-        found=True,
-        output="com.google.android.calculator",
-        reason="Found calculator package in list",
-    )
-    mock_llm.ainvoke = AsyncMock(return_value=expected_result)
-
-    with patch("artemis.agents.entity_extractor.entity_extractor.get_llm") as mock_get_llm:
-        mock_get_llm.return_value.with_structured_output.return_value = mock_llm
-        result = await extract_entity(
-            request="Calculator",
-            data="com.google.android.calculator\ncom.google.android.calendar",
-            ctx=mock_ctx,
-        )
-
-    assert result.found is True
-    assert result.output == "com.google.android.calculator"
-    assert result.reason == "Found calculator package in list"
-
-
-@pytest.mark.asyncio
-async def test_extract_entity_handles_exception():
-    """Verify extraction returns a graceful failure result when LLM throws an exception."""
-    mock_ctx = MagicMock()
-    mock_llm = MagicMock()
-    mock_llm.ainvoke = AsyncMock(side_effect=RuntimeError("LLM connection timed out"))
-
-    with patch("artemis.agents.entity_extractor.entity_extractor.get_llm") as mock_get_llm:
-        mock_get_llm.return_value.with_structured_output.return_value = mock_llm
-        result = await extract_entity(
-            request="Settings",
-            data="com.android.settings",
-            ctx=mock_ctx,
-        )
-
-    assert result.found is False
-    assert result.output is None
-    assert "LLM extraction error" in result.reason

tests/unit/agents/test_outputter.py

@@ -26,7 +26,26 @@ from artemis.utils.logger import get_logger  # noqa: E402
 logger = get_logger(__name__)
 
 
+class _CyFunctionDetectorMeta(type):
+    def __instancecheck__(self, instance):
+        name = type(instance).__name__
+        return (
+            name
+            in (
+                "cyfunction",
+                "cython_function_or_method",
+                "builtin_function_or_method",
+            )
+            or "cyfunction" in name.lower()
+        )
+
+
+class CyFunctionDetector(metaclass=_CyFunctionDetectorMeta):
+    pass
+
+
 class MockPydanticSchema(BaseModel):
+    model_config = {"ignored_types": (CyFunctionDetector,)}
     color: str
     price: float
     currency_symbol: str