Phase 2.2: performance optimizations, debug tools, app close fix

backend/run_server.py

@@ -1,9 +1,22 @@
 """Entry point for PyInstaller bundle"""
-print("[RFCP] run_server.py starting...", flush=True)
-
 import os
 import sys
 
+# Force unbuffered stdout/stderr — critical for piped output (Electron, bat files)
+os.environ['PYTHONUNBUFFERED'] = '1'
+if hasattr(sys.stdout, 'reconfigure'):
+    try:
+        sys.stdout.reconfigure(line_buffering=True)
+    except Exception:
+        pass
+if hasattr(sys.stderr, 'reconfigure'):
+    try:
+        sys.stderr.reconfigure(line_buffering=True)
+    except Exception:
+        pass
+
+print("[RFCP] run_server.py starting...", flush=True)
+
 # Set base path for PyInstaller
 if getattr(sys, 'frozen', False):
     base_dir = os.path.dirname(sys.executable)