more features checks. setup improvements

docs/features/checked/policy/delta-verdict-engine.md

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+# Delta Verdict Engine
+
+## Module
+Policy
+
+## Status
+VERIFIED
+
+## Verification Summary
+Full delta verdict computation verified across 3 test projects (2059 tests total, 0 failures):
+- **WhatIfSimulationService**: hypothetical SBOM diffs (add/remove/upgrade/downgrade) with VEX override and reachability downgrade
+- **DeltaVerdictBuilder**: content-addressed VerdictId, gate escalation (Critical->G4, High->G3), PassWithExceptions
+- **ConsoleSimulationDiffService**: deterministic delta diff with severity breakdowns, rule impact, explain samples
+- **SimulationAnalyticsService**: delta summary with outcome/severity change tracking, high-impact findings, determinism hashes
+- **EffectiveDecisionMap**: materialized baseline decisions for delta comparison
+- **PolicyEngineDeterminismTests**: same inputs produce identical verdict hashes, order-independent, concurrent-safe
+
+## Evidence
+- `docs/qa/feature-checks/runs/policy/delta-verdict-engine/run-002/`