fix(playbook): preserve exact match scores in hybrid recommendations

apps/api/src/services/playbook_service.py

@@ -350,6 +350,11 @@ class PlaybookService:
                 hybrid_by_id = {match.playbook_id: match for match in hybrid_matches}
                 for playbook_id, jaccard_score in jaccard_results:
                     if playbook_id in hybrid_by_id:
+                        match = hybrid_by_id[playbook_id]
+                        if match.similarity_score < jaccard_score:
+                            match.similarity_score = jaccard_score
+                            if match.match_type == "vector":
+                                match.match_type = "hybrid"
                         continue
                     hybrid_matches.append(
                         PlaybookMatch(

apps/api/tests/test_playbook_service.py

@@ -250,6 +250,21 @@ class TestPlaybookService:
         playbook = create_test_playbook()
         await mock_repo.create(playbook)
 
+        class LowerScoringRagService:
+            async def hybrid_search(self, **_kwargs):
+                return [
+                    PlaybookMatch(
+                        playbook_id=playbook.playbook_id,
+                        similarity_score=0.4,
+                        match_type="hybrid",
+                    )
+                ]
+
+        async def fake_rag_service():
+            return LowerScoringRagService()
+
+        service._get_rag_service = fake_rag_service
+
         # Query with matching symptoms
         symptoms = SymptomPattern(
             alert_names=["HighCPU"],