v2.0.0: Agent Collaboration Hub (Official)

🚀 Major Release: Agent Collaboration Hub\n\nNew Features:\n- 🤖 Multi-Agent System: PM, SA, PG agents working in concert.\n- 📝 Auto-Secretary: One-click Chat-to-Form conversion.\n- 🛡️ Security Harden: Sanitized Prompts & PII Protection.\n\nDocumentation:\n- Updated README with 'Design Principles' (Security, Single Source of Truth).\n- MIT License added.\n\nNote: This release consolidates previous v2.0.x patches into a single stable build.