chore: analysis tooling, research artifacts, and code quality

- Analysis: parameter sweep scripts, adversarial testing, 2D frontier maps
- Research: KRAIKEN_RESEARCH_REPORT, SECURITY_REVIEW, STORAGE_LAYOUT
- FuzzingBase: consolidated fuzzing helper, BackgroundLP simulation
- Sweep results: CSV data for full 4D sweep (1050 combos), bull-bear,
  AS sweep, VWAP fix validation
- Code quality: .gitignore for fuzz CSVs, gas snapshot, updated docs
- Remove dead analysis helpers (CSVHelper, CSVManager, ScenarioRecorder)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

onchain/analysis/V3_STEP_LOG.md

@@ -0,0 +1,31 @@
+# OptimizerV3 Step Function Test — 2026-02-12 14:26 UTC
+
+## Transition Band (score 141-159)
+
+### transition-low (score=142, AS=19.0% AW=92, buybias=10)
+Result: **0/5** ✅
+
+### transition-mid (score=150, AS=55.0% AW=60, buybias=10)
+Result: **5/5** ❌
+
+### transition-high (score=158, AS=91.0% AW=28, buybias=10)
+Result: **0/5** ✅
+
+## Bear Verification (score <= 140)
+
+### bear-max (score=140, AS=10.0% AW=100, buybias=10)
+Result: **0/5** ✅
+
+### bear-120 (score=120, AS=10.0% AW=100, buybias=10)
+Result: **0/5** ✅
+
+## Bull Verification (score >= 160)
+
+### bull-min (score=160, AS=100.0% AW=20, buybias=10)
+Result: **0/5** ✅
+
+### bull-200 (score=200, AS=100.0% AW=20, buybias=10)
+Result: **0/5** ✅
+
+
+### Complete: 2026-02-12 14:27 UTC