```mermaid
graph TD
    subgraph AI_LLM
        GEMINI
    end 
    subgraph AI_Server_Proxy
        Prompts[Prompt Template API]

        LLM_REQ[AI Request Proxy API]
        LLM_RESP[AI Response Proxy API]
        LLM_REQ --> LLM_P[Wrap Prompt]
        LLM_P --> GEMINI
        GEMINI --> LLM_RESP

    end
    %% Phase 1: AI Interaction
    subgraph AI_Interaction [1. AI Interaction & Local Logs]
        A[Mobile Periodic Check or Push]
        B(Mobile AI Assistant)
        RESULT(Mobile Display Result)
        A --> Prompts
        Prompts --> |Template Desc & ID| B
        B -->|User Input| C{Privacy Proxy}
        C -->|Desensitize| LLM_REQ
        LLM_RESP -->|Return| RESULT
        C -->|Local Save| E[(Interaction Records Local DB)]
        RESULT --> E
    end

    

    %% Phase 2: Archiving Decision
    subgraph Decision_Phase [2. Summary & Backup Trigger]
        E -->|AI Local Summary| F[Asset/Info Identification]
        F -->|Ask User| G{Confirm Backup?}
        G -->|No| H[Local Retention Only]
    end

    %% Phase 3: Sentinel Dual Encryption
    subgraph Secure_Vault [3. Sentinel Dual Encryption]
        G -->|Yes: Authorize| I[TEE Invokes Key]
        I <-->|Inner Layer Enc/Dec| J[User Ciphertext Data_Enc_D0]
        J -->|Upload| K[Sentinel Server]
        K -->|Download| J
        K -->|Server PubKey/Outer Layer Enc/Dec| L[Final Ciphertext Enc_Data_Final]
        L <-->|Distributed Storage| M[(Arweave / Filecoin)]
        M <-->|Record Hash| N[Smart Contract Lock/Proof]
    end

    %% Styling
    style I fill:#f96,stroke:#333
    style K fill:#bbf,stroke:#333
    style M fill:#9f9,stroke:#333
```