第六、七轮：离线 ort/WebGPU、R9 查看器整周期、安全层截止下沉、enc_once 前瞻 bug（feat 动态轴）、UTF-8、断点 RNG 续跑与 --stop-at、R2 池无关性自检、R8 出题缓存、本机自检 selftest、冒烟 smoke；遗留清单并入审查文档第六节

ml/selftest_proc.py

@@ -0,0 +1,71 @@
+"""本机自检的进程部分（2026-10-18 第七轮，遗留 C-5：Windows 生命周期从未实测）。由 ml/selftest.sh 调用。
+  tree   ：按控制台同一套标志（Windows: CREATE_NEW_PROCESS_GROUP|CREATE_NO_WINDOW；POSIX: 新会话）起 bash → python + node 两个孙进程，
+           再用控制台同一套停止方法（Windows: taskkill /T /F；POSIX: 按会话 TERM）结束，检查孙进程是否全部消失。
+  detach ：起一个"启动器"进程，它按同一标志拉起子树后立刻退出，检查子树是否还活着（等价于关掉控制台黑窗口后训练是否继续）。
+输出一行 JSON：{"tree_killed": bool, "survive_parent_exit": bool, ...}"""
+import json, os, subprocess, sys, time, tempfile, shutil
+
+ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, ROOT)
+from ml.monitor import find_bash, kill_session   # noqa: E402
+
+FLAGS = {'creationflags': subprocess.CREATE_NEW_PROCESS_GROUP | 0x08000000} if os.name == 'nt' else {'start_new_session': True}
+
+
+def alive(pid):
+    if os.name == 'nt':
+        r = subprocess.run(['tasklist', '/FI', f'PID eq {pid}', '/NH'], capture_output=True, text=True)
+        return str(pid) in r.stdout
+    try: os.kill(pid, 0); return True
+    except OSError: return False
+
+
+def tree_cmd(d):
+    py = sys.executable.replace('\\', '/'); dd = d.replace('\\', '/')
+    return (f'"{py}" -c "import os,time;open(\'{dd}/p.pid\',\'w\').write(str(os.getpid()));time.sleep(300)" & '
+            f'node -e "require(\'fs\').writeFileSync(\'{dd}/n.pid\',String(process.pid));setInterval(()=>{{}},1000)" & wait')
+
+
+def wait_pids(d, t=20):
+    for _ in range(t * 4):
+        try: return int(open(os.path.join(d, 'p.pid')).read()), int(open(os.path.join(d, 'n.pid')).read())
+        except Exception: time.sleep(0.25)
+    return None, None
+
+
+def main():
+    bash = find_bash(); out = {'os': os.name, 'bash': bash}
+    if not bash: out['error'] = '找不到 bash'; print(json.dumps(out, ensure_ascii=False)); return
+    # tree
+    d = tempfile.mkdtemp(prefix='st_tree_')
+    p = subprocess.Popen([bash, '-c', tree_cmd(d)], stdin=subprocess.DEVNULL, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, **FLAGS)
+    pp, pn = wait_pids(d)
+    out['tree_started'] = pp is not None and pn is not None
+    if out['tree_started']:
+        if os.name == 'nt': subprocess.run(['taskkill', '/T', '/F', '/PID', str(p.pid)], capture_output=True)
+        else: kill_session(p.pid)
+        time.sleep(3)
+        out['tree_left'] = {'python': alive(pp), 'node': alive(pn)}
+        out['tree_killed'] = not any(out['tree_left'].values())
+        for x in (pp, pn):   # 清场
+            if alive(x):
+                if os.name == 'nt': subprocess.run(['taskkill', '/F', '/PID', str(x)], capture_output=True)
+                else: os.kill(x, 9)
+    shutil.rmtree(d, ignore_errors=True)
+    # detach：启动器拉起子树后立即退出
+    d = tempfile.mkdtemp(prefix='st_det_')
+    launcher = ('import subprocess,sys;' f'f={FLAGS!r};' 'subprocess.Popen([sys.argv[1],"-c",sys.argv[2]],stdin=subprocess.DEVNULL,stdout=subprocess.DEVNULL,stderr=subprocess.DEVNULL,**f)')
+    subprocess.run([sys.executable, '-c', launcher, bash, tree_cmd(d)], timeout=30)
+    pp, pn = wait_pids(d)
+    time.sleep(3)
+    out['survive_parent_exit'] = bool(pp and pn and alive(pp) and alive(pn))
+    for x in (pp, pn):
+        if x and alive(x):
+            if os.name == 'nt': subprocess.run(['taskkill', '/F', '/PID', str(x)], capture_output=True)
+            else: os.kill(x, 9)
+    shutil.rmtree(d, ignore_errors=True)
+    print(json.dumps(out, ensure_ascii=False))
+
+
+if __name__ == '__main__':
+    main()