The earlier Phase 1-4 recovery left one unique worker-1 slice unrecovered: provenance extraction logic was still duplicated in the runner and the full-state log path still dropped the structured research fields. This change centralizes provenance extraction in agent state helpers, reuses it from the LLM runner, and writes the same structured fields into TradingAgents full-state logs with focused regression tests.\n\nConstraint: Preserve the existing debate-string output shape while making provenance reuse consistent across runner and state-log surfaces\nRejected: Cherry-pick worker-1 auto-checkpoint wholesale | it mixed duplicate A/B files and uv.lock churn with the useful provenance helper changes\nConfidence: high\nScope-risk: narrow\nDirective: Keep research provenance extraction centralized; new consumers should call the helper instead of re-listing field names by hand\nTested: python -m pytest -q tradingagents/tests/test_research_guard.py orchestrator/tests/test_trading_graph_config.py orchestrator/tests/test_llm_runner.py orchestrator/tests/test_profile_stage_chain.py orchestrator/tests/test_profile_ab.py orchestrator/tests/test_contract_v1alpha1.py orchestrator/tests/test_live_mode.py\nTested: python -m compileall tradingagents/agents/utils/agent_states.py tradingagents/graph/trading_graph.py orchestrator/llm_runner.py orchestrator/tests/test_trading_graph_config.py tradingagents/tests/test_research_guard.py\nNot-tested: Live-provider end-to-end analysis run that emits a new full_states_log file
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