fix: verify container actually running after start, show logs on failure

sources/python/main.py

@@ -109,8 +109,16 @@ server {{
 
     print(f"[{name}] Starting...")
     r = run(f"bash {start_path}", timeout=30)
-    if r.returncode != 0:
+    if r.returncode != 0 or "Error" in r.stderr or "Error" in r.stdout:
-        print(f"❌ {name}: {r.stderr}")
+        print(f"❌ {name}: {r.stderr or r.stdout}")
+        return False
+    
+    # Verify container is running
+    time.sleep(2)
+    check = run(f"docker inspect -f '{{{{.State.Running}}}}' {container} 2>/dev/null")
+    if check.stdout.strip() != "true":
+        logs = run(f"docker logs {container} 2>&1").stdout[-500:]
+        print(f"❌ {name} failed to start:\n{logs}")
         return False
 
     # Save state