Initial publish: 29 findings, 6 prompts, methodology, open questions

Full comparative analysis of GPT-5, Claude Opus 4.6, Claude Sonnet 4.6,
GPT-4.1, and GPT-4.1 Mini on analytical tasks (not coding).

Contents:
- findings/ALL-FINDINGS.md — complete 3,249-line research log with all
  29 findings, methodology notes, and open questions
- prompts/ — 6 exact prompts used across experiments
- methodology.md — experimental setup and evaluation criteria
- open-questions.md — unanswered questions for future work
- README.md — overview and summary table

Key findings:
- Cross-document consistency: Opus is 2.4x faster with more findings
- Gap-finding: GPT-5 reasoning tokens find domain-specific gaps
- Race conditions: Opus excels at temporal interaction reasoning
- Bias detection: Signal-to-noise ratio > model capability
- Adversarial analysis: GPT-5 exhaustive, Opus qualitatively different

Signed-off-by: Rodin

prompts/gap-finding.md

@@ -0,0 +1,47 @@
+# Prompt: Gap-Finding in Architecture Documents
+
+Used in Finding #9.
+
+## Setup
+
+- Single document (full text, no truncation)
+- Same focused analytical question to all models
+- No tools, no project context beyond the document
+- Temperature 0.3 for GPT-4.1/Mini, default for GPT-5
+
+## Prompt
+
+```
+You are a systems reliability engineer reviewing a failure modes document
+for a trading platform. Your task is to identify MISSING failure scenarios
+— things that COULD go wrong in this architecture but are NOT covered in
+the document.
+
+Focus on:
+1. Scenarios specific to THIS architecture (not generic "server could crash")
+2. Interactions between components that could produce unexpected states
+3. External dependency failures not covered
+4. Timing/ordering issues in the described sequences
+5. Recovery procedures that have gaps
+
+For each missing scenario:
+- **Scenario:** What goes wrong
+- **Why it's specific to this system:** Why generic monitoring wouldn't catch it
+- **Impact:** What state the system ends up in
+- **Why the document misses it:** What assumption makes this invisible
+
+## Document:
+
+[FULL TEXT OF failure-modes.md, 383 lines]
+```
+
+## Results
+
+| Model | Time | Output tokens | Reasoning tokens | Scenarios found |
+|-------|------|---------------|------------------|-----------------|
+| GPT-4.1 Mini | 16s | 2,003 | 0 | 10 |
+| GPT-4.1 | 24s | 2,575 | 0 | 15 |
+| GPT-5 | 45s | 8,565 | 6,656 | 14 |
+
+GPT-5 found the most domain-specific and actionable gaps despite finding
+fewer total scenarios than GPT-4.1. Quality > quantity.