feat(v5.7.4): Semantic Closure Gate, Delete unused files, PDF Fixes

V5.6.1: Deterministic Sanitizer & Imposition-Aware Pricing - Final Demo Polish

V5.4: Resolve False Zero Prices & Implement Partial Transparency - Hebrew PDF Support Hardened

Upgrade: Planner v4.2 (Smart Gateway) & Integrity Layer v1.0 Integration

Hardening 1.3.1: Global Cart Margin Analyzer + Full Stress Test Suite Passing (4/4)

Finalizing Margin Warnings and Classifier refinements for Sanity checks

UAT Fixes: Fix UUID, Unlock Alucobond, Inject Persona, UI Isolation

Phase 1.3 Final Hardening - Transparency & Business Truth

feat: V38 architecture improvements - UI cart edit, LLM optimization, and detailed logging

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