Add resumable LLM investigation loop with bounded controller execution

tests/profiles/vcore/test_real_package.py

@@ -128,4 +128,18 @@ def test_full_bug20_package_pair(tmp_path):
         budget.record_evidence(*identity,asked["hypothesis_id"],asked["action_id"],ref)
         budget.settle(*identity,asked["hypothesis_id"],asked["action_id"],semantic_score=50,reason="Offline provenance regression")
     assert CaseBuilder(store).build(*identity).reused
+    from viano_bug_analysis.analysis import Investigator,InvestigationConfig,InvestigationLimits
+    from test_investigator import LoopAdapter
+    def choose_packaged_source(reply,context):
+        if context["previous_result"] is None:
+            reply["next"]={"kind":"tool","operation":"source.read_context","arguments":{"source_ref":code_ref,"start_line":1,"end_line":3}}
+    loop_adapter=LoopAdapter(choose_packaged_source)
+    investigated=asyncio.run(Investigator(store,gateway(loop_adapter,max_request_bytes=4*1024*1024),
+        InvestigationConfig(max_iterations_per_hypothesis=1),InvestigationLimits(max_context_bytes=2*1024*1024),
+        router=InvestigationToolRouter(database_tool=DatabaseQueryTool(normalize_schema_descriptor))).run(*identity,max_steps=10))
+    assert investigated.status=="COMPLETED" and len(loop_adapter.contexts)==6
+    with PackageReader(investigated.package) as reader:
+        assert reader.manifest["state"]=="BUILDING_DIAGNOSIS"
+        assert reader.manifest["artifacts"]["diagnosis"] is None
+        assert reader.manifest["artifacts"]["change_request"] is None
     assert [hashlib.sha256(path.read_bytes()).hexdigest() for path in (diag, src)] == original_hashes