Fix research pipeline runtime failures

tests/test_crawler.py

@@ -176,6 +176,13 @@ def test_url_dedup_no_duplicate() -> None:
 # ---------------------------------------------------------------------------
 
 
+async def test_fetcher_configures_all_httpx_timeout_phases() -> None:
+    """httpx requires a pool timeout when the other phases are explicit."""
+    fetcher = AsyncFetcher()
+    assert fetcher._client.timeout.pool == 10.0
+    await fetcher.close()
+
+
 async def test_fetcher_blocked_url() -> None:
     """Fetcher must return BLOCKED for SSRF-blocked URLs."""
     fetcher = AsyncFetcher()
@@ -266,4 +273,4 @@ def test_normalized_document_hash_matches() -> None:
         text="test content for hash",
     )
     expected = hashlib.sha256(b"test content for hash").hexdigest()
-    assert doc.content_hash == expected
+    assert doc.content_hash == expected