Studio: VLM-caption figures at ingest + pass image hits to LLM + render in card

tests/python/test_rag_tool_handler.py

@@ -153,6 +153,25 @@ def test_format_hits_offsets_ids_by_start_id():
     assert '<chunk id="1"' not in result
 
 
+def test_format_hits_emits_image_url_for_image_kind():
+    from core.rag.tool import _format_hits_for_llm
+
+    hits = [
+        {
+            "filename": "paper.pdf",
+            "text": "Figure 1 shows a bar chart of X over time.",
+            "kind": "image",
+            "image_path": "/abs/path/images/doc-123/img-0007.png",
+            "document_id": "doc-123",
+            "page_number": 5,
+        }
+    ]
+    result = _format_hits_for_llm(hits)
+    assert 'kind="image"' in result
+    assert 'image_url="/api/rag/images/doc-123/img-0007.png"' in result
+    assert "Figure 1 shows a bar chart" in result
+
+
 def test_format_hits_escapes_xml_in_source():
     from core.rag.tool import _format_hits_for_llm