updated diagram to remove AWS references

docs/Sequence Diagram.mmd

@@ -6,7 +6,7 @@ sequenceDiagram
     participant F as Fusion 
     participant TK as Tokenize (on-prem)
     participant PR as PII Identification (on-prem)
-    participant V as Vault
+    participant V as Vault (on-prem)
     participant RT as AgentCore Runtime + Bedrock (cloud)
     participant GW as AgentCore Gateway (cloud)
     participant RG as RAG (on-prem)
@@ -29,6 +29,6 @@ sequenceDiagram
     F->>RS: {session_id, text}
     RS->>V: lookup session tokens
     RS-->>F: final (王小明 restored)
-    F-->>UI: {final, deidentified_prompt, agent_tokenized}
+    F-->>UI: {restored talking points}
     UI-->>A: split view (restored vs tokenized)
 ```