# Parity Team

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Debokti Ghosh](https://cerebralvalley.ai/u/dvoktg)
- **GitHub:** https://github.com/Debokti/parity-migration-engine
- **Demo video:** https://youtu.be/gE7FPcY2X3k
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3918

Global enterprises remain tethered to mission-critical Java monoliths built decades ago. Over 70% of modern rewrites fail because complex business logic, regulatory compliance rules, and financial rounding edge-cases are buried across millions of lines of code.

Parity Engine solves this with a Tri-Model Autonomous Migration System that transforms legacy monoliths into modern Angular 17 Micro-Frontends—and mathematically proves 100% functional, state, and financial math parity before production.

Key Innovations:
1. Closed-Loop Deterministic Pipeline (Capture ➔ Specify ➔ Migrate ➔ Prove):
   • Trace Extraction: Meta AI's Muse Spark model analyzes legacy execution traces and extracts formal, machine-verifiable BehaviorSpec contracts (JSON Schema).
   • Code Synthesis: Specialized models synthesize modern Angular 17.3 MFEs with AG Grid and reactive state.
   • Self-Healing Verification: Headless Playwright re-runs recorded golden traces against the synthesized MFE, using an autonomous self-healing agent to diagnose and resolve regressions.

2. Zero-Disruption Coexistence & Zero-Trust Governance:
   • Runs modern Angular 17 within the legacy Tomcat monolith via Webpack Module Federation without touching core legacy code.
   • Auth Bridge dynamically translates legacy JSESSIONID cookies into cryptographically signed HMAC-SHA256 Bearer tokens.
   • Strictly enforces enterprise 4-Eyes Maker/Checker governance and Segregation of Duties (SoD) with automated rejection proofs (HTTP 400).

3. 100% Mathematical Proof:
   • Verified across 6 complex enterprise supply chain finance scenarios (multi-currency, facility overdraw caps, 85% advance limits, dual-checker workflows).
   • Exactly 699 out of 699 deterministic checks passed (100.0%) with 0 discrepancies, verifying exact cent-level BigDecimal Banker's Rounding matching.

## More from Meta Global AI Developer Hackathon

- [Miraia](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3915)
- [Kodemex Software](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3916)
- [8 Bit Thugs](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3917)
- [Team Vigil](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3919)
- [Secure Sense Innovations](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3920)
- [Fortune Hunter](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/3921)

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