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en/flow/user_interaction_and_privacy_archiving_flowchart.md

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+```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
+```