diff --git a/src/viano_bug_analysis/schemas/hypothesis-context-v1.schema.json b/src/viano_bug_analysis/schemas/hypothesis-context-v1.schema.json
index 11636a6..4a4ba13 100644
--- a/src/viano_bug_analysis/schemas/hypothesis-context-v1.schema.json
+++ b/src/viano_bug_analysis/schemas/hypothesis-context-v1.schema.json
@@ -109,6 +109,12 @@
             },
             "additionalProperties": false
           }
+        },
+        "model_encoding": {
+          "const": "shared_json_v1"
+        },
+        "context_selection": {
+          "const": "phase_selection_v1"
         }
       },
       "required": [
diff --git a/tests/test_entity_resolution.py b/tests/test_entity_resolution.py
index 7468db9..40a1050 100644
--- a/tests/test_entity_resolution.py
+++ b/tests/test_entity_resolution.py
@@ -467,3 +467,41 @@ def test_description_matches_prioritize_specific_names_without_automatic_selecti
     assert next(m for m in matches if m['candidate_id']=='K0002')['more_specific_matches']==['K0001']
     assert next(m for m in matches if m['candidate_id']=='K0001')['more_specific_matches']==[]
     assert 'selected' not in str(guidance)
+
+
+def test_resolved_selected_interpretation_transitions_to_hypotheses_and_replays(built_case):
+    from viano_bug_analysis.analysis import HypothesisBuilder
+    from test_hypothesis_builder import ProposalAdapter
+    store=built_case[0]
+    model=Model();service=service_for(store)
+    interpreter=CaseInterpreter(store,gateway(model),project_research=service)
+    interpreted=asyncio.run(interpreter.interpret('case-A','stable-package'))
+    assert interpreted.status=='COMPLETED'
+    with PackageReader(interpreted.package) as reader:
+        doc=json.loads(reader.read_bytes(interpreted.interpretation_ref))
+        context=json.loads(reader.read_bytes(doc['context_ref']))
+        assert context['model_encoding']=='shared_json_v1'
+        assert context['context_selection']=='phase_selection_v1'
+        frozen={n:reader.read_bytes(n) for n in reader.files if n!='manifest.json'}
+    proposal=ProposalAdapter()
+    builder=HypothesisBuilder(store,gateway(proposal))
+    builder.interpreter=interpreter
+    result=asyncio.run(builder.build('case-A','stable-package'))
+    assert result.status=='COMPLETED' and PackageValidator().validate(result.package).valid
+    assert proposal.requests[0]['prompt_version']=='hypotheses_v4'
+    assert len(model.requests)==3 and len(service.database.calls)==1
+    assert asyncio.run(builder.build('case-A','stable-package')).reused
+    assert len(proposal.requests)==1 and len(model.requests)==3
+    with PackageReader(result.package) as reader:
+        for name,raw in frozen.items():assert reader.read_bytes(name)==raw
+
+
+def test_embedded_interpretation_context_contract_stays_in_sync():
+    from importlib.resources import files
+    schemas=files('viano_bug_analysis.schemas')
+    canonical=json.loads(schemas.joinpath('case-interpretation-context-v1.schema.json').read_text())
+    hypothesis=json.loads(schemas.joinpath('hypothesis-context-v1.schema.json').read_text())
+    embedded=hypothesis['properties']['case_context']
+    assert embedded['properties']==canonical['properties']
+    assert embedded['required']==canonical['required']
+    assert embedded['additionalProperties']==canonical['additionalProperties']