新增演示：构建隔离演示环境全套SQL种子资产与系统元数据基线

scripts/qa/start_demo_clean_backend.py

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+import os
+import subprocess
+import sys
+import time
+import socket
+from pathlib import Path
+
+def is_port_listening(port, timeout=1.0):
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        s.settimeout(timeout)
+        return s.connect_ex(('127.0.0.1', port)) == 0
+
+def kill_port(port):
+    try:
+        out = subprocess.check_output(["lsof", "-ti", f":{port}"], text=True).strip()
+        if out:
+            for pid_str in out.split():
+                print(f"Killing process {pid_str} on port {port}...")
+                subprocess.run(["kill", "-9", pid_str], check=False)
+            time.sleep(1)
+    except subprocess.CalledProcessError:
+        pass
+
+def main():
+    repo_root = Path(__file__).resolve().parent.parent.parent
+    os.chdir(repo_root)
+    
+    # 1. Kill any existing 8096 process
+    kill_port(8096)
+    
+    # 2. Parse ~/.railwaysystem-qa.env safely
+    env = os.environ.copy()
+    env_file = Path.home() / ".railwaysystem-qa.env"
+    if env_file.exists():
+        with open(env_file, 'r', encoding='utf-8') as f:
+            for line in f:
+                line = line.strip()
+                if not line or line.startswith('#') or '=' not in line:
+                    continue
+                k, v = line.split('=', 1)
+                k = k.strip()
+                v = v.strip().strip("'\"")
+                env[k] = v
+        print(f"Loaded credentials from {env_file.name}")
+    else:
+        print("Warning: ~/.railwaysystem-qa.env not found!")
+
+    # Explicit Demo Clean database configuration
+    db_url = "jdbc:kingbase8://127.0.0.1:14321/training_demo_clean?currentSchema=public,sys_catalog&useUnicode=true&characterEncoding=utf8"
+    db_user = "kingbase"
+    db_pass = "sict123456"
+    
+    env["SPRING_DATASOURCE_DRUID_MASTER_URL"] = db_url
+    env["SPRING_DATASOURCE_DRUID_MASTER_USERNAME"] = db_user
+    env["SPRING_DATASOURCE_DRUID_MASTER_PASSWORD"] = db_pass
+    env["SERVER_PORT"] = "8096"
+    env["DMS_ENABLED"] = "false"
+    env["SPRING_REDIS_HOST"] = "127.0.0.1"
+    env["SPRING_REDIS_PORT"] = "6379"
+
+    log_path = repo_root / "backend-demo.log"
+    log_file = open(log_path, "w", encoding="utf-8")
+
+    cmd = [
+        "java",
+        "--add-opens=java.base/java.lang=ALL-UNNAMED",
+        "--add-opens=java.base/java.lang.reflect=ALL-UNNAMED",
+        "--add-opens=java.base/java.util=ALL-UNNAMED",
+        "-jar",
+        str(repo_root / "RuoYi-Vue/ruoyi-admin/target/ruoyi-admin.jar"),
+        "--server.port=8096",
+        f"--spring.datasource.druid.master.url={db_url}",
+        f"--spring.datasource.druid.master.username={db_user}",
+        f"--spring.datasource.druid.master.password={db_pass}",
+        "--spring.redis.host=127.0.0.1",
+        "--spring.redis.port=6379",
+        "--dms.enabled=false",
+    ]
+
+    print("Starting RuoYi backend against training_demo_clean...")
+    proc = subprocess.Popen(
+        cmd,
+        cwd=repo_root,
+        env=env,
+        stdout=log_file,
+        stderr=subprocess.STDOUT,
+        start_new_session=True
+    )
+    print(f"Backend started with PID: {proc.pid}")
+
+    # Wait for port 8096 to become active
+    max_wait = 40
+    start_time = time.time()
+    listening = False
+    while time.time() - start_time < max_wait:
+        if proc.poll() is not None:
+            print(f"Backend process exited prematurely with code {proc.returncode}!")
+            with open(log_path, 'r', encoding='utf-8') as f:
+                lines = f.readlines()
+                print("Last 30 lines of log:")
+                for l in lines[-30:]:
+                    print(l, end='')
+            sys.exit(1)
+        if is_port_listening(8096):
+            listening = True
+            break
+        time.sleep(1)
+
+    if listening:
+        print(f"Backend successfully listening on port 8096! (PID {proc.pid})")
+    else:
+        print("Timed out waiting for port 8096.")
+        sys.exit(1)
+
+if __name__ == '__main__':
+    main()