feat: add Wikipedia as research pipeline source alongside SearXNG

Runs wiki_search in parallel with SearXNG queries; Wikipedia results
(which already carry content via their extract field) are merged into
the source pool before outline generation, skipping a separate fetch
step. Also fixes a pre-existing F811 ruff violation in the test file.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_research_pipeline.py

@@ -123,8 +123,6 @@ async def test_pipeline_creates_section_notes_and_index():
         n.title = title
         return n
 
-    mock_update = AsyncMock()
-
     with patch("fabledassistant.services.research._generate_sub_queries", new_callable=AsyncMock, return_value=["q1"]), \
          patch("fabledassistant.services.research._search_searxng", new_callable=AsyncMock, return_value=[{"url": "http://x.com", "title": "X", "snippet": "s"}]), \
          patch("fabledassistant.services.research.fetch_url_content", new_callable=AsyncMock, return_value="content"), \
@@ -192,3 +190,42 @@ async def test_pipeline_falls_back_when_all_sections_fail():
         result = await run_research_pipeline("test topic", user_id=1, model="test-model")
 
     assert result.id == 77
+
+
+@pytest.mark.asyncio
+async def test_pipeline_includes_wikipedia_sources():
+    """run_research_pipeline should merge Wikipedia results into the source pool."""
+    from unittest.mock import MagicMock
+
+    wiki_results = [{"title": "Wiki Article", "extract": "Wikipedia content about the topic.", "url": "https://en.wikipedia.org/wiki/Topic"}]
+
+    outline = [
+        {"title": "Section A", "focus": "Focus A"},
+        {"title": "Section B", "focus": "Focus B"},
+    ]
+
+    note_id_counter = iter(range(30, 40))
+
+    def _make_note(user_id, title, body, tags, project_id=None, parent_id=None):
+        n = MagicMock()
+        n.id = next(note_id_counter)
+        n.title = title
+        return n
+
+    with patch("fabledassistant.services.research._generate_sub_queries", new_callable=AsyncMock, return_value=["q1"]), \
+         patch("fabledassistant.services.research._search_searxng", new_callable=AsyncMock, return_value=[{"url": "http://x.com", "title": "X", "snippet": "s"}]), \
+         patch("fabledassistant.services.research.wiki_search", new_callable=AsyncMock, return_value=wiki_results), \
+         patch("fabledassistant.services.research.fetch_url_content", new_callable=AsyncMock, return_value="content"), \
+         patch("fabledassistant.services.research._generate_outline", new_callable=AsyncMock, return_value=outline) as mock_outline, \
+         patch("fabledassistant.services.research._synthesize_section", new_callable=AsyncMock, side_effect=lambda t, f, s, m: (t, f"Body for {t}")), \
+         patch("fabledassistant.services.research._generate_executive_summary", new_callable=AsyncMock, return_value="Summary."), \
+         patch("fabledassistant.services.research.create_note", new_callable=AsyncMock, side_effect=_make_note), \
+         patch("fabledassistant.services.research.update_note", new_callable=AsyncMock):
+
+        from fabledassistant.services.research import run_research_pipeline
+        await run_research_pipeline("test topic", user_id=1, model="test-model")
+
+    # The sources passed to _generate_outline should include the Wikipedia article
+    sources_arg = mock_outline.call_args[0][1]  # second positional arg
+    source_urls = [s["url"] for s in sources_arg]
+    assert "https://en.wikipedia.org/wiki/Topic" in source_urls