v1.1.0 - Buyer-friendly demo improvements

What's New

Added

• --concise flag for buyer-friendly side-by-side comparison output
• --simulated flag for deterministic demo recordings (no API needed)
• artifacts/ directory with pre-generated sample outputs for all scenarios
• demo/output_formatter.py for clean comparison table formatting
• Smoke tests for all scenarios (9 tests total)
• Export common types from stage0/__init__.py
• README section: "What this proves / What this does NOT prove"

Changed

• Refactored simulated demo to use actual planner steps
• Improved stats calculation in output formatter

Fixed

• Silent security fallback when Stage0Client initialization fails
• Null handling for side_effects and tools
• Live API and simulated mode now produce identical results

Quick Start

# Buyer-friendly demo (recommended)
python run_demo.py --scenario all --concise --simulated --auto

# Test live API
python run_demo.py --scenario frameworks --concise --auto