feat: infrance

traderai/desktop.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import asyncio
 import os
 from pathlib import Path
 import shutil
@@ -25,6 +26,10 @@ def resource_path(*parts: str) -> Path:
 def main() -> None:
     try:
         _chdir_to_app_dir()
+        backend_port = _backend_port_from_args()
+        if backend_port is not None:
+            _run_server(backend_port)
+            return
         _log("TraderAI desktop starting")
         _log(f"cwd={Path.cwd()}")
         _log(f"executable={sys.executable}")
@@ -36,9 +41,13 @@ def main() -> None:
             _log("existing TraderAI backend found; opening window")
             _open_window(url)
             return
-        server_thread = threading.Thread(target=_run_server, args=(port,), daemon=True)
-        server_thread.start()
-        _log("backend thread started")
+        if getattr(sys, "frozen", False):
+            backend_process = _start_backend_process(port)
+            _log(f"backend process started pid={backend_process.pid}")
+        else:
+            server_thread = threading.Thread(target=_run_server, args=(port,), daemon=True)
+            server_thread.start()
+            _log("backend thread started")
         _wait_for_server(url)
         _log("backend health check passed")
         _open_window(url)
@@ -62,6 +71,22 @@ def _select_port() -> int:
     return _free_port()
 
 
+def _backend_port_from_args() -> int | None:
+    args = sys.argv[1:]
+    if len(args) >= 2 and args[0] == "--backend-port":
+        return int(args[1])
+    return None
+
+
+def _start_backend_process(port: int) -> subprocess.Popen:
+    command = [sys.executable, "--backend-port", str(port)]
+    _log(f"starting backend subprocess: {' '.join(command)}")
+    kwargs: dict[str, object] = {}
+    if sys.platform == "win32":
+        kwargs["creationflags"] = subprocess.CREATE_NO_WINDOW
+    return subprocess.Popen(command, **kwargs)
+
+
 def _port_available(port: int) -> bool:
     try:
         with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
@@ -88,6 +113,9 @@ def _existing_server_ready(url: str) -> bool:
 def _run_server(port: int) -> NoReturn:
     try:
         _log(f"backend starting on port {port}")
+        if sys.platform == "win32" and hasattr(asyncio, "WindowsProactorEventLoopPolicy"):
+            asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy())
+            _log("set Windows Proactor event loop policy for subprocess-compatible backend")
         from traderai.server import app
 
         config = uvicorn.Config(