style: fix ruff lint violations across service and tests

Wraps over-long lines, sorts imports, drops an unused local, and bumps the
agent submodule for its own import-sort fix so make check passes.

tests/adapters/test_sqlite_ingest_reviews.py

@@ -31,7 +31,10 @@ def test_review_store_round_trips_jev_facet_arrays_and_idempotent_create(tmp_pat
             {
                 "facet": "tags",
                 "value": "spatial sound",
-                "definition": "Audio techniques that place sound in immersive spatial configurations.",
+                "definition": (
+                    "Audio techniques that place sound in immersive "
+                    "spatial configurations."
+                ),
             },
         ),
     )