update docs

docs/architecture.md

@@ -143,56 +143,24 @@ env, env_json_str = NATSBridge.smartsend(
 ## Architecture Diagram (Cross-Platform)
 
 ```mermaid
-flowchart TB
-    subgraph JuliaApp["Julia Application"]
-        JuliaAppCode[App Code]
-        JuliaBridge[NATSBridge.jl]
-        JuliaNATS[<b>NATS.jl</b>]
+flowchart TD
+    subgraph Client
+        App[Julia/JS/Python/MicroPython Application]
     end
 
-    subgraph JSApp["JavaScript Application"]
-        JSAppCode[App Code]
-        JSBridge[NATSBridge.js]
-        JSNATS[<b>nats.js</b>]
+    subgraph Server
+        Julia/JS/Python/MicroPython[Julia/JS/Python/MicroPython Service]
+        NATS[NATS Server]
+        FileServer[HTTP File Server]
     end
 
-    subgraph PythonApp["Python/MicroPython Application"]
-        PythonAppCode[App Code]
-        PythonBridge[NATSBridge.py]
-        PythonNATS[<b>nats.py</b>]
-    end
+    App -->|NATS| NATS
+    NATS -->|NATS| Julia/JS/Python/MicroPython
+    Julia/JS/Python/MicroPython -->|NATS| NATS
+    Julia/JS/Python/MicroPython -->|HTTP POST| FileServer
 
-    subgraph Infrastructure["Infrastructure"]
-        NATS[<b>NATS Server</b><br/>Message Broker]
-        FileServer[<b>HTTP File Server</b><br/>Upload/Download]
-    end
-
-    JuliaAppCode --> JuliaBridge
-    JuliaBridge --> JuliaNATS
-    JSAppCode --> JSBridge
-    JSBridge --> JSNATS
-    PythonAppCode --> PythonBridge
-    PythonBridge --> PythonNATS
-
-    JuliaNATS --> NATS
-    JSNATS --> NATS
-    PythonNATS --> NATS
-
-    NATS --> JuliaNATS
-    NATS --> JSNATS
-    NATS --> PythonNATS
-
-    JuliaBridge -.->|HTTP POST upload| FileServer
-    JSBridge -.->|HTTP POST upload| FileServer
-    PythonBridge -.->|HTTP POST upload| FileServer
-
-    FileServer -.->|HTTP GET download| JuliaBridge
-    FileServer -.->|HTTP GET download| JSBridge
-    FileServer -.->|HTTP GET download| PythonBridge
-
-    style JuliaApp fill:#c5e1a5
-    style JSApp fill:#bbdefb
-    style PythonApp fill:#f8bbd0
+    style App fill:#e8f5e9
+    style Julia/JS/Python/MicroPython fill:#e8f5e9
     style NATS fill:#fff3e0
     style FileServer fill:#f3e5f5
 ```