%% VaultMesh Digital Twins — Three-Pillar Sovereign Architecture
%% Proposal: €10M HORIZON-CL4-2025-DIGITAL-03
%% Partners: VaultMesh (IE), Fraunhofer AISEC (DE), Siemens (DE), TU Munich (DE),
%%           Charité Berlin (DE), Barcelona (ES)

graph TB
    subgraph Core["🧠 VaultMesh Core Infrastructure"]
        LAWCHAIN[LAWCHAIN<br/>Tamper-Evident Audit Spine<br/>RFC3161 + Blockchain Anchors]
        PSI[Ψ-Field Service<br/>Collective Sensing & Anomaly Detection<br/>Cross-Pillar Intelligence]
        FEDERATION[Federation Router<br/>Sovereign Data Exchange<br/>mTLS + Capability Snapshots]
        RECEIPTS[Receipt Engine<br/>Cryptographic Proof-of-Action<br/>Every Twin Update = Receipt]
        TREASURY[Treasury Subsystem<br/>Value & Resource Tracking<br/>Cross-Organizational Metering]
    end

    subgraph Pillar1["🏙️ PILLAR 1: Urban Digital Twins"]
        URBAN_SENSORS[Smart City Sensors<br/>IoT Mesh Network<br/>Real-Time Data Streams]
        URBAN_TWIN[Urban Twin Core<br/>3D City Model + Dynamics<br/>Traffic, Energy, Environment]
        URBAN_SIM[Simulation Engine<br/>What-If Scenarios<br/>Policy Impact Modeling]
        URBAN_DASH[Citizen Dashboard<br/>Public Transparency Portal<br/>Open Data API]

        URBAN_PILOT_BCN[🧪 Barcelona Pilot<br/>Smart Mobility + Energy Grid<br/>6-Month Deployment]
        URBAN_PILOT_BCN -.->|"30% Energy Reduction Target"| URBAN_SIM

        WP3_URBAN[WP3: Urban Infrastructure<br/>Lead: Siemens<br/>Contribute: TU Munich, Barcelona]
    end

    subgraph Pillar2["🏥 PILLAR 2: Biomedical Digital Twins"]
        BIO_DATA[Clinical Data Sources<br/>EHR, Wearables, Labs<br/>GDPR-Native Anonymization]
        BIO_TWIN[Patient Twin Model<br/>Personalized Physiology Sim<br/>Drug Response Prediction]
        BIO_PRIVACY[Privacy Layer<br/>Differential Privacy<br/>Federated Analytics]
        BIO_ETHICS[Ethics Oversight<br/>IRB Integration<br/>Consent Management]

        BIO_PILOT_CHARITE[🧪 Charité Berlin Pilot<br/>Diabetes Treatment Optimization<br/>200-Patient Cohort]
        BIO_PILOT_CHARITE -.->|"20% Outcome Improvement Target"| BIO_TWIN

        WP4_BIO[WP4: Biomedical Systems<br/>Lead: Charité Berlin<br/>Contribute: Fraunhofer AISEC]
    end

    subgraph Pillar3["🏭 PILLAR 3: Industrial Digital Twins"]
        IND_SENSORS[Industrial IoT<br/>PLCs, SCADA, Edge Devices<br/>OT/IT Convergence]
        IND_TWIN[Factory Twin Model<br/>Production Line Simulation<br/>Predictive Maintenance]
        IND_OPTIM[Optimization Engine<br/>Resource Allocation<br/>Supply Chain Resilience]
        IND_SECURITY[OT Security Layer<br/>ICS Threat Detection<br/>DORA/NIS2 Compliance]

        IND_PILOT_SIEMENS[🧪 Siemens Testbed<br/>Smart Factory (Amberg)<br/>12-Month Validation]
        IND_PILOT_SIEMENS -.->|"15% Throughput Increase Target"| IND_OPTIM

        WP3_IND[WP3: Industrial Infrastructure<br/>Lead: Siemens<br/>Contribute: TU Munich]
    end

    subgraph Coordination["🎯 Cross-Pillar Coordination Layer"]
        INTEROP[Interoperability Protocol<br/>Twin-to-Twin Communication<br/>Standardized Schema Exchange]
        GOVERNANCE[Governance Framework<br/>Multi-Stakeholder Rules<br/>Sovereignty Boundaries]
        STANDARDS[Standards Contributions<br/>ETSI, IEC, ISO/IEC 30141<br/>Digital Twin Taxonomy]

        WP1[WP1: Requirements & Architecture<br/>Lead: Fraunhofer AISEC<br/>M1-6]
        WP2[WP2: Core Development<br/>Lead: VaultMesh<br/>M7-18]
        WP5[WP5: Pilots & Validation<br/>Lead: VaultMesh<br/>M13-24]
    end

    subgraph Policy["🇪🇺 EU Policy Alignment"]
        AI_ACT[AI Act Compliance<br/>Art. 9-14: Human Oversight<br/>High-Risk System Docs]
        DORA[DORA Compliance<br/>Art. 5-6: ICT Risk Mgmt<br/>Art. 17: Incident Reporting]
        NIS2[NIS2 Compliance<br/>Art. 21: Security Measures<br/>Art. 23: Notifications]
        GAIA_X[Gaia-X Alignment<br/>Sovereign Cloud Standards<br/>Federation Services]
    end

    %% Core → Pillars Integration
    LAWCHAIN -->|"Audit Trail"| URBAN_TWIN
    LAWCHAIN -->|"Audit Trail"| BIO_TWIN
    LAWCHAIN -->|"Audit Trail"| IND_TWIN

    PSI -->|"Urban Anomalies"| URBAN_SENSORS
    PSI -->|"Clinical Alerts"| BIO_TWIN
    PSI -->|"OT Threats"| IND_SECURITY

    FEDERATION -->|"City-to-City Exchange"| URBAN_TWIN
    FEDERATION -->|"Multi-Site Research"| BIO_TWIN
    FEDERATION -->|"Supply Chain Mesh"| IND_TWIN

    RECEIPTS -->|"Every Sensor Update"| URBAN_SENSORS
    RECEIPTS -->|"Every Patient Event"| BIO_DATA
    RECEIPTS -->|"Every Process Change"| IND_SENSORS

    TREASURY -->|"Resource Metering"| URBAN_SIM
    TREASURY -->|"Computation Cost"| BIO_TWIN
    TREASURY -->|"Asset Tracking"| IND_OPTIM

    %% Pillar 1: Urban Flow
    URBAN_SENSORS --> URBAN_TWIN
    URBAN_TWIN --> URBAN_SIM
    URBAN_SIM --> URBAN_DASH
    URBAN_DASH -.->|"Citizen Feedback"| URBAN_TWIN

    %% Pillar 2: Biomedical Flow
    BIO_DATA --> BIO_PRIVACY
    BIO_PRIVACY --> BIO_TWIN
    BIO_TWIN --> BIO_ETHICS
    BIO_ETHICS -.->|"Oversight Approval"| BIO_TWIN

    %% Pillar 3: Industrial Flow
    IND_SENSORS --> IND_TWIN
    IND_TWIN --> IND_OPTIM
    IND_OPTIM --> IND_SECURITY
    IND_SECURITY -.->|"Threat Intelligence"| IND_TWIN

    %% Cross-Pillar Coordination
    URBAN_TWIN <-.->|"Interop Protocol"| INTEROP
    BIO_TWIN <-.->|"Interop Protocol"| INTEROP
    IND_TWIN <-.->|"Interop Protocol"| INTEROP
    INTEROP --> GOVERNANCE
    GOVERNANCE --> STANDARDS

    %% Work Package Assignments
    WP1 --> GOVERNANCE
    WP1 --> INTEROP
    WP2 --> LAWCHAIN
    WP2 --> PSI
    WP2 --> FEDERATION
    WP3_URBAN --> URBAN_TWIN
    WP3_IND --> IND_TWIN
    WP4_BIO --> BIO_TWIN
    WP5 --> URBAN_PILOT_BCN
    WP5 --> BIO_PILOT_CHARITE
    WP5 --> IND_PILOT_SIEMENS

    %% Policy Integration
    PSI -->|"AI Act: Human Oversight"| AI_ACT
    LAWCHAIN -->|"DORA: Audit Trail"| DORA
    IND_SECURITY -->|"NIS2: OT Security"| NIS2
    FEDERATION -->|"Gaia-X: Sovereignty"| GAIA_X

    %% Ψ-Field Collective Intelligence
    PSI -->|"Cross-Domain Patterns"| INTEROP
    URBAN_SIM -.->|"Anomaly Reports"| PSI
    BIO_TWIN -.->|"Adverse Events"| PSI
    IND_SECURITY -.->|"Threat Signals"| PSI

    classDef core fill:#f3e5f5,stroke:#6a1b9a,stroke-width:3px
    classDef urban fill:#bbdefb,stroke:#0d47a1,stroke-width:2px
    classDef bio fill:#c8e6c9,stroke:#2e7d32,stroke-width:2px
    classDef industrial fill:#ffccbc,stroke:#bf360c,stroke-width:2px
    classDef coord fill:#fff9c4,stroke:#f57f17,stroke-width:2px
    classDef policy fill:#e1bee7,stroke:#4a148c,stroke-width:2px
    classDef pilot fill:#ffab91,stroke:#d84315,stroke-width:3px

    class LAWCHAIN,PSI,FEDERATION,RECEIPTS,TREASURY core
    class URBAN_SENSORS,URBAN_TWIN,URBAN_SIM,URBAN_DASH urban
    class BIO_DATA,BIO_TWIN,BIO_PRIVACY,BIO_ETHICS bio
    class IND_SENSORS,IND_TWIN,IND_OPTIM,IND_SECURITY industrial
    class INTEROP,GOVERNANCE,STANDARDS,WP1,WP2,WP5 coord
    class AI_ACT,DORA,NIS2,GAIA_X policy
    class URBAN_PILOT_BCN,BIO_PILOT_CHARITE,IND_PILOT_SIEMENS pilot