Compact architecture diagram to three nodes

https://claude.ai/code/session_01YNwrPB3iN3JWpkVgM5XwVQ

Author: claude

README.md

@@ -17,23 +17,14 @@ any operating system.
 ## Architecture
 
 ```mermaid
-graph TB
+graph LR
     Client["HTTP Client<br/>(Any OS)"]
+    App["FastAPI Application<br/>middleware · routers · MT5 client"]
+    MT5["MetaTrader 5<br/>Terminal (Windows)"]
 
-    subgraph "Windows Host"
-        subgraph "FastAPI Application"
-            Middleware["Middleware Stack<br/>CORS · Logging · Error Handler · Rate Limiter · Auth"]
-            Routers["Routers<br/>health · symbols · market · account · history · calc · trading"]
-            Deps["MT5 Client Singleton<br/>+ JSON/Parquet Formatter"]
-            Middleware --> Routers --> Deps
-        end
-
-        Deps --> pdmt5["pdmt5<br/>MT5 Client Library"]
-        pdmt5 --> MT5["MetaTrader 5<br/>Terminal"]
-    end
-
-    Client -- "HTTP/REST" --> Middleware
-    Deps -- "JSON / Parquet" --> Client
+    Client -- "HTTP/REST" --> App
+    App -- "JSON / Parquet" --> Client
+    App <--> MT5
 ```
 
 ## Features