Use compact investigation working sets with durable local evidence recall

src/viano_bug_analysis/llm/gateway.py

@@ -131,7 +131,7 @@ class LLMGateway:
                 LOGGER.warning("LLM endpoint unavailable provider=%s code=%s", provider.id, code)
             except ValidationError as invalid:
                 info={'validation_keyword':invalid.validator}
-                if request['prompt_version']=='investigation_project_v14':
+                if request['prompt_version'] in {'investigation_project_v14','investigation_project_v15'}:
                     from .diagnostics import schema_feedback
                     info.update(schema_feedback(invalid))
                 error = LLMError("LLM_OUTPUT_SCHEMA",diagnostics=info)