reorganize application code into fiveparaminte-main directory structure

main.py

@@ -62,6 +62,22 @@ def _get_local_ips():
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
+    # Protect against Windows IOCP Proactor crashes (WinError 64 / 121 / 10054 on accept)
+    import sys
+    if sys.platform == "win32":
+        try:
+            loop = asyncio.get_running_loop()
+            def silence_windows_iocp_errors(loop, context):
+                msg = str(context.get("message", ""))
+                exc = context.get("exception")
+                winerr = getattr(exc, "winerror", None)
+                if winerr in (64, 121, 10054) or "Accept failed on a socket" in msg or "The specified network name is no longer available" in msg:
+                    return
+                loop.default_exception_handler(context)
+            loop.set_exception_handler(silence_windows_iocp_errors)
+        except Exception:
+            pass
+
     servers = []
 
     # === Start Contec CMS7000PLUS TCP Servers ===