初始提交：抖音视频批量采集流水线

App 端免签名接口（设备注册 + detail + CDN 直链），一体化流水线
下载→抽音→传COS→记录→删本地，AI 作品四档判定，四份文档：
README（使用指南）、PROGRESS（批次进度）、RE（逆向全过程）、AI（判定规则）。

Co-Authored-By: Claude Code <noreply@anthropic.com>

tests/test_smoke.py

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+"""不联网的冒烟测试：验证 crypto 正确性、链接解析、文件名清洗、去重记录。"""
+
+from __future__ import annotations
+
+# 移到 scripts/ tests/ 后，直接运行时脚本目录成了 sys.path[0]，
+# 把项目根加回来，import douyin / pipeline 才找得到。
+import sys as _sys
+from pathlib import Path as _Path
+_sys.path.insert(0, str(_Path(__file__).resolve().parent.parent))
+
+import tempfile
+from pathlib import Path
+
+from douyin import Registry, extract_aweme_id, safe_filename
+from douyin.crypto import self_test
+from douyin.urls import ParseError
+
+
+def test_crypto():
+    self_test()
+
+
+def test_extract_id():
+    cases = {
+        "7123456789012345678": "7123456789012345678",
+        "https://www.douyin.com/video/7123456789012345678": "7123456789012345678",
+        "https://www.douyin.com/note/7123456789012345678": "7123456789012345678",
+        "https://www.douyin.com/?modal_id=7123456789012345678": "7123456789012345678",
+        "https://www.iesdouyin.com/share/video/7123456789012345678/": "7123456789012345678",
+        "看看这个 https://www.douyin.com/video/7123456789012345678?a=1 好玩":
+            "7123456789012345678",
+    }
+    for raw, want in cases.items():
+        got = extract_aweme_id(raw)
+        assert got == want, f"{raw!r} -> {got}, 期望 {want}"
+
+    for bad in ["随便一段没有链接的文字", "https://example.com/foo"]:
+        try:
+            extract_aweme_id(bad)
+        except ParseError:
+            pass
+        else:
+            raise AssertionError(f"{bad!r} 本应报 ParseError")
+    print("extract_aweme_id OK")
+
+
+def test_safe_filename():
+    assert safe_filename('a/b\\c:d*e?f"g<h>i|j') == "a_b_c_d_e_f_g_h_i_j"
+    assert safe_filename("   ") == "untitled"
+    assert len(safe_filename("x" * 200)) == 80
+    assert safe_filename("多个   空格") == "多个 空格"
+    print("safe_filename OK")
+
+
+def test_registry():
+    with tempfile.TemporaryDirectory() as d:
+        root = Path(d)
+        reg = Registry(root / ".downloaded.json")
+        f = root / "v.mp4"
+        f.write_bytes(b"x" * 10)
+        assert "111" not in reg
+        reg.add("111", f, 10, "标题")
+        assert "111" in reg
+        # 重新加载后仍在
+        assert "111" in Registry(root / ".downloaded.json")
+        # 文件被删则视为未下载
+        f.unlink()
+        assert "111" not in Registry(root / ".downloaded.json")
+    print("Registry OK")
+
+
+if __name__ == "__main__":
+    test_crypto()
+    test_extract_id()
+    test_safe_filename()
+    test_registry()
+    print("\n全部冒烟测试通过")