CC: prepare generic VISION package candidate

tests/test_visual_evidence.py

@@ -0,0 +1,57 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+
+from svrnty_vision.visual_evidence import visual_evidence_from_vlm_response
+
+
+def test_vlm_raw_mode_response_becomes_visual_evidence() -> None:
+    response = SimpleNamespace(
+        rubric_mode="raw",
+        justification="",
+        model_id="qwen-test",
+        raw_scores_json='{"description":"solid red square","objects":["red square"],"detected_text":[]}',
+    )
+
+    evidence = visual_evidence_from_vlm_response(
+        response,
+        source_reference="fixture://red-square.png",
+        provider_mode="sovereign",
+        retention_disclosure="synchronous_no_async_persistence",
+        timestamp="2026-06-06T00:00:00Z",
+    )
+
+    assert evidence.producing_package_id == "visual-perception-package-candidate"
+    assert evidence.producing_tool_id == "vision.image_analyze"
+    assert evidence.capability_surface == "vision.image_analyze"
+    assert evidence.source_reference == "fixture://red-square.png"
+    assert evidence.provider_mode == "sovereign"
+    assert evidence.retention_disclosure == "synchronous_no_async_persistence"
+    assert evidence.observed_content_summary == "solid red square"
+    assert "description: solid red square" in evidence.extracted_claims
+    assert "objects: red square" in evidence.extracted_claims
+    assert "detected_text: []" in evidence.extracted_claims
+    assert evidence.validation_status == "candidate_validated"
+    assert "research_synthesis" not in evidence.model_dump()
+
+
+def test_non_json_vlm_response_gets_safe_raw_fallback() -> None:
+    response = SimpleNamespace(
+        rubric_mode="raw",
+        justification="",
+        model_id="qwen-test",
+        raw_scores_json="a screenshot of a pricing page with two columns",
+    )
+
+    evidence = visual_evidence_from_vlm_response(
+        response,
+        source_reference="fixture://pricing.png",
+        provider_mode="sovereign",
+        retention_disclosure="synchronous_no_async_persistence",
+        timestamp="2026-06-06T00:00:00Z",
+    )
+
+    assert evidence.observed_content_summary == "a screenshot of a pricing page with two columns"
+    assert evidence.extracted_claims == [
+        "raw: a screenshot of a pricing page with two columns"
+    ]