feat(client): capture T-105 quantity states

client/scripts/capture_quantity_gate2_spike.py

@@ -0,0 +1,117 @@
+"""采集 T-105 人工准备的数量 1/2 两态证据；不执行页面操作。"""
+
+from __future__ import annotations
+
+import argparse
+from math import isfinite
+from pathlib import Path
+import sys
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbClient, DeviceConnectionError, SubprocessAdbRunner
+from cmbuyer_client.device.baseline import NoReconnectUiautomatorConnector
+from cmbuyer_client.pdd.quantity_gate2_spike import (
+    DECLARED_QUANTITIES,
+    EXPECTED_GOODS_ID,
+    QuantityGate2EvidenceCapturer,
+    QuantityGate2EvidenceError,
+)
+
+
+def parse_arguments(argv: list[str] | None = None) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="采集 T-105 人工准备的数量两态本机证据。")
+    parser.add_argument("--serial", required=True, help="ADB device serial；禁止自动选择。")
+    parser.add_argument("--goods-id", required=True, help="T-105 已批准的目标商品标识。")
+    parser.add_argument(
+        "--state",
+        required=True,
+        choices=sorted(DECLARED_QUANTITIES),
+        help="人工声明状态：initial=数量1，target=数量2。",
+    )
+    parser.add_argument(
+        "--declared-quantity",
+        required=True,
+        type=int,
+        help="人工看到的数量；必须与状态一致。",
+    )
+    parser.add_argument("--output-dir", required=True, type=Path, help="全新本机证据目录；不得覆盖。")
+    parser.add_argument("--timeout", type=float, default=10.0, help="ADB 与只读设备 RPC 超时（秒）。")
+    parser.add_argument("--adb", default="adb", help="adb 可执行文件路径。")
+    return parser.parse_args(argv)
+
+
+def validate_arguments(arguments: argparse.Namespace) -> None:
+    if (
+        type(arguments.serial) is not str
+        or not arguments.serial.strip()
+        or arguments.serial != arguments.serial.strip()
+    ):
+        raise ValueError("必须显式提供非空 --serial。")
+    if type(arguments.goods_id) is not str or arguments.goods_id != EXPECTED_GOODS_ID:
+        raise ValueError("--goods-id 不是 T-105 已批准目标。")
+    if type(arguments.state) is not str or arguments.state not in DECLARED_QUANTITIES:
+        raise ValueError("--state 必须是批准的人工声明状态。")
+    if type(arguments.declared_quantity) is not int or (
+        arguments.declared_quantity != DECLARED_QUANTITIES[arguments.state]
+    ):
+        raise ValueError("--declared-quantity 必须与人工声明状态一致。")
+    if not isinstance(arguments.output_dir, Path) or not arguments.output_dir.name:
+        raise ValueError("--output-dir 必须是明确的全新目录。")
+    if (
+        not isinstance(arguments.timeout, (int, float))
+        or isinstance(arguments.timeout, bool)
+        or arguments.timeout <= 0
+        or not isfinite(arguments.timeout)
+    ):
+        raise ValueError("--timeout 必须是大于 0 的有限数值。")
+
+
+def main(argv: list[str] | None = None) -> int:
+    arguments = parse_arguments(argv)
+    try:
+        validate_arguments(arguments)
+    except ValueError as error:
+        print(f"失败：{error}", file=sys.stderr)
+        return 2
+
+    try:
+        import adbutils
+        import uiautomator2 as u2
+    except ImportError:
+        print("失败：缺少 uiautomator2；请在采购工具虚拟环境中运行。", file=sys.stderr)
+        return 2
+
+    capturer = QuantityGate2EvidenceCapturer(
+        AdbClient(SubprocessAdbRunner(arguments.adb), timeout_seconds=arguments.timeout),
+        NoReconnectUiautomatorConnector(
+            adbutils.AdbClient(socket_timeout=arguments.timeout).device_list,
+            u2.connect,
+        ),
+        timeout_seconds=arguments.timeout,
+    )
+    try:
+        capturer.capture(
+            arguments.serial,
+            arguments.goods_id,
+            arguments.state,
+            arguments.declared_quantity,
+            arguments.output_dir,
+        )
+    except (DeviceConnectionError, QuantityGate2EvidenceError):
+        # 第三方异常可能含 serial、Activity、本机路径或页面正文，CLI 只输出固定摘要。
+        print("数量两态只读取证失败：已停止，未发布本机证据目录。", file=sys.stderr)
+        return 1
+    except OSError:
+        print("数量两态只读取证失败：无法发布本机证据目录。", file=sys.stderr)
+        return 1
+
+    print("数量两态只读取证完成。")
+    print("人工复核：请在指定目录检查截图、XML、应用摘要和 manifest。")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

client/src/cmbuyer_client/pdd/quantity_gate2_spike.py

@@ -0,0 +1,303 @@
+"""T-105 数量两态的纯只读取证；人工确认前不识别或操作数量控件。"""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from datetime import UTC, datetime
+from hashlib import sha256
+import json
+from math import isfinite
+import os
+from pathlib import Path
+import shutil
+from typing import Any, Protocol
+from uuid import uuid4
+
+from adbutils.errors import AdbTimeout
+from PIL import Image, UnidentifiedImageError
+from uiautomator2.exceptions import HTTPTimeoutError
+
+from ..device.adb import AdbClient, DeviceConnectionError, DeviceInspection
+from ..device.baseline import (
+    HIERARCHY_PARAMS,
+    PDD_PACKAGE,
+    SCREENSHOT_PARAMS,
+    _save_base64_screenshot,
+    _sha256_file,
+    _validate_hierarchy,
+)
+from .product_open import EXPECTED_PDD_VERSION
+from .product_url import parse_product_url
+
+
+EXPECTED_GOODS_ID = "937122477375"
+EXPECTED_DEVICE_MODEL = "PKG110"
+EXPECTED_ANDROID_VERSION = "16"
+EXPECTED_SCREEN_SIZE = (1080, 2376)
+TARGET_SELECTION = {"color": "黑色CHA(纯棉)", "size": "M(建议100-115)"}
+DECLARED_QUANTITIES = {"initial": 1, "target": 2}
+
+
+class QuantityGate2EvidenceError(RuntimeError):
+    """T-105 两态证据未形成完整原子产物。"""
+
+
+class QuantityGate2EvidenceTimeoutError(QuantityGate2EvidenceError):
+    """只读取证设备调用超时。"""
+
+
+class QuantityGate2ReadDevice(Protocol):
+    """阶段一唯一设备边界；故意不暴露任何页面动作。"""
+
+    def app_info(self, package_name: str) -> dict[str, Any]: ...
+
+    def app_current(self) -> dict[str, Any]: ...
+
+    def window_size(self) -> tuple[int, int]: ...
+
+    def jsonrpc_call(self, method: str, params: Any = None, timeout: float = 10) -> Any: ...
+
+
+@dataclass(frozen=True)
+class QuantityGate2EvidenceResult:
+    output_directory: Path
+    manifest_path: Path
+    screenshot_path: Path
+    hierarchy_path: Path
+    app_path: Path
+
+
+class QuantityGate2EvidenceCapturer:
+    """记录人工准备的数量状态，不从页面推断声明是否正确。"""
+
+    def __init__(
+        self,
+        adb_client: AdbClient,
+        connector: Callable[[str], QuantityGate2ReadDevice],
+        timeout_seconds: float,
+    ) -> None:
+        if not _is_positive_finite(timeout_seconds):
+            raise ValueError("timeout_seconds 必须是大于 0 的有限数值")
+        self._adb_client = adb_client
+        self._connector = connector
+        self._timeout_seconds = timeout_seconds
+        self._started = False
+
+    def capture(
+        self,
+        serial: str,
+        goods_id: str,
+        human_declared_state: str,
+        human_declared_quantity: int,
+        output_directory: Path,
+    ) -> QuantityGate2EvidenceResult:
+        if self._started:
+            raise QuantityGate2EvidenceError("同一取证器不可重复调用。")
+        self._started = True
+        _validate_inputs(serial, goods_id, human_declared_state, human_declared_quantity)
+        target = Path(output_directory)
+        _validate_new_target(target)
+
+        staging: Path | None = None
+        try:
+            inspection = self._adb_client.inspect(serial)
+            _require_expected_device(inspection)
+            device = self._connector(serial)
+            initial_app = _require_read_precondition(device)
+
+            target.parent.mkdir(parents=True, exist_ok=True)
+            staging = target.parent / f".{target.name}.staging-{uuid4().hex}"
+            staging.mkdir()
+
+            screenshot_path = staging / "screenshot.png"
+            screenshot_payload = _read_rpc(
+                device,
+                "takeScreenshot",
+                SCREENSHOT_PARAMS,
+                self._timeout_seconds,
+            )
+            if not isinstance(screenshot_payload, str):
+                raise QuantityGate2EvidenceError("数量状态截图无效，未发布证据。")
+            _save_base64_screenshot(screenshot_payload, screenshot_path)
+            _require_screenshot_size(screenshot_path)
+
+            hierarchy = _read_rpc(
+                device,
+                "dumpWindowHierarchy",
+                HIERARCHY_PARAMS,
+                self._timeout_seconds,
+            )
+            _validate_hierarchy(hierarchy)
+            hierarchy_path = staging / "hierarchy.xml"
+            hierarchy_path.write_text(hierarchy, encoding="utf-8")
+
+            final_app = _require_read_precondition(device)
+            if final_app != initial_app:
+                raise QuantityGate2EvidenceError("数量状态取证期间前台页面漂移，未发布证据。")
+            app_path = staging / "app.json"
+            app_path.write_text(
+                json.dumps(final_app, ensure_ascii=False, indent=2, sort_keys=True) + "\n",
+                encoding="utf-8",
+            )
+
+            manifest_path = staging / "manifest.json"
+            manifest_path.write_text(
+                json.dumps(
+                    _manifest(
+                        inspection,
+                        serial,
+                        goods_id,
+                        human_declared_state,
+                        human_declared_quantity,
+                        screenshot_path,
+                        hierarchy_path,
+                        app_path,
+                    ),
+                    ensure_ascii=False,
+                    indent=2,
+                    sort_keys=True,
+                )
+                + "\n",
+                encoding="utf-8",
+            )
+            os.rename(staging, target)
+            staging = None
+        except (DeviceConnectionError, QuantityGate2EvidenceError):
+            _clean_staging(staging)
+            raise
+        except (AdbTimeout, HTTPTimeoutError, TimeoutError) as error:
+            _clean_staging(staging)
+            raise QuantityGate2EvidenceTimeoutError("数量两态只读取证超时，未发布证据。") from error
+        except (OSError, UnidentifiedImageError, ValueError) as error:
+            _clean_staging(staging)
+            raise QuantityGate2EvidenceError("数量两态证据无法原子发布，未发布证据。") from error
+        except Exception as error:
+            _clean_staging(staging)
+            raise QuantityGate2EvidenceError("数量两态只读取证未完成，未发布证据。") from error
+
+        return QuantityGate2EvidenceResult(
+            output_directory=target,
+            manifest_path=target / "manifest.json",
+            screenshot_path=target / "screenshot.png",
+            hierarchy_path=target / "hierarchy.xml",
+            app_path=target / "app.json",
+        )
+
+
+def _is_positive_finite(value: object) -> bool:
+    return (
+        isinstance(value, (int, float))
+        and not isinstance(value, bool)
+        and value > 0
+        and isfinite(value)
+    )
+
+
+def _validate_inputs(serial: object, goods_id: object, state: object, quantity: object) -> None:
+    if type(serial) is not str or not serial.strip() or serial != serial.strip():
+        raise QuantityGate2EvidenceError("必须显式提供非空设备通道。")
+    if type(goods_id) is not str or goods_id != EXPECTED_GOODS_ID:
+        raise QuantityGate2EvidenceError("商品不是 T-105 已批准取证目标。")
+    parse_product_url(f"https://mobile.yangkeduo.com/goods.html?goods_id={goods_id}")
+    if type(state) is not str or state not in DECLARED_QUANTITIES:
+        raise QuantityGate2EvidenceError("人工声明状态无效。")
+    if type(quantity) is not int or quantity != DECLARED_QUANTITIES[state]:
+        raise QuantityGate2EvidenceError("人工声明数量与批准状态不一致。")
+
+
+def _validate_new_target(target: Path) -> None:
+    if target.exists() or not target.name:
+        raise QuantityGate2EvidenceError("输出目录必须是不存在的明确新目录。")
+
+
+def _require_expected_device(inspection: DeviceInspection) -> None:
+    if inspection.model != EXPECTED_DEVICE_MODEL or inspection.android_version != EXPECTED_ANDROID_VERSION:
+        raise QuantityGate2EvidenceError("设备不是已批准取证组合。")
+
+
+def _require_read_precondition(device: QuantityGate2ReadDevice) -> dict[str, str]:
+    info = device.app_info(PDD_PACKAGE)
+    version = (info.get("versionName") or info.get("version_name")) if isinstance(info, dict) else None
+    if version != EXPECTED_PDD_VERSION:
+        raise QuantityGate2EvidenceError("拼多多版本不是已批准取证版本。")
+    current = device.app_current()
+    if not isinstance(current, dict) or current.get("package") != PDD_PACKAGE:
+        raise QuantityGate2EvidenceError("拼多多不在前台。")
+    activity = current.get("activity")
+    if not isinstance(activity, str) or not activity.strip():
+        raise QuantityGate2EvidenceError("前台应用摘要不完整。")
+    if device.window_size() != EXPECTED_SCREEN_SIZE:
+        raise QuantityGate2EvidenceError("屏幕坐标空间不是已批准尺寸。")
+    return {"package": PDD_PACKAGE, "activity": activity, "pdd_version": EXPECTED_PDD_VERSION}
+
+
+def _read_rpc(
+    device: QuantityGate2ReadDevice,
+    method: str,
+    params: object,
+    timeout_seconds: float,
+) -> object:
+    return device.jsonrpc_call(method, params, timeout=timeout_seconds)
+
+
+def _require_screenshot_size(path: Path) -> None:
+    with Image.open(path) as image:
+        image.load()
+        if image.size != EXPECTED_SCREEN_SIZE or image.format != "PNG":
+            raise QuantityGate2EvidenceError("数量状态截图格式或尺寸无效。")
+
+
+def _clean_staging(staging: Path | None) -> None:
+    if staging is not None and staging.exists():
+        shutil.rmtree(staging)
+
+
+def _manifest(
+    inspection: DeviceInspection,
+    serial: str,
+    goods_id: str,
+    state: str,
+    quantity: int,
+    screenshot_path: Path,
+    hierarchy_path: Path,
+    app_path: Path,
+) -> dict[str, Any]:
+    return {
+        "schema_version": 1,
+        "operation": "t105-quantity-gate2-readonly-evidence",
+        "captured_at": datetime.now(UTC).isoformat(),
+        "product": {
+            "goods_id": goods_id,
+            "canonical_url": f"https://mobile.yangkeduo.com/goods.html?goods_id={goods_id}",
+        },
+        "human_declared_state": state,
+        "human_declared_quantity": quantity,
+        "human_declared_selection": TARGET_SELECTION,
+        "review_status": "human_review_required",
+        "channel": "wifi" if ":" in serial else "usb",
+        "serial_sha256": sha256(serial.encode("utf-8")).hexdigest(),
+        "device": {
+            "model": inspection.model,
+            "android_version": inspection.android_version,
+            "pdd_package": PDD_PACKAGE,
+            "pdd_version": EXPECTED_PDD_VERSION,
+        },
+        "artifacts": [
+            {
+                "path": screenshot_path.name,
+                "role": "quantity_state_raw_screenshot",
+                "sha256": _sha256_file(screenshot_path),
+            },
+            {
+                "path": hierarchy_path.name,
+                "role": "quantity_state_raw_hierarchy_local_only",
+                "sha256": _sha256_file(hierarchy_path),
+            },
+            {
+                "path": app_path.name,
+                "role": "quantity_state_app_identity",
+                "sha256": _sha256_file(app_path),
+            },
+        ],
+    }

client/tests/pdd/test_quantity_gate2.py

@@ -0,0 +1,452 @@
+"""T-105 数量两态只读取证与后续生产边界的离线测试。"""
+
+from __future__ import annotations
+
+import argparse
+import ast
+import base64
+from contextlib import redirect_stderr
+from functools import lru_cache
+from importlib.util import module_from_spec, spec_from_file_location
+from io import BytesIO, StringIO
+import json
+from pathlib import Path
+import sys
+from tempfile import TemporaryDirectory
+import unittest
+from unittest.mock import patch
+
+from PIL import Image
+
+
+CLIENT_ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(CLIENT_ROOT / "src"))
+
+from cmbuyer_client.device.adb import AdbDevice, DeviceInspection
+from cmbuyer_client.pdd.quantity_gate2_spike import (
+    DECLARED_QUANTITIES,
+    EXPECTED_GOODS_ID,
+    QuantityGate2EvidenceCapturer,
+    QuantityGate2EvidenceError,
+    QuantityGate2EvidenceTimeoutError,
+    QuantityGate2ReadDevice,
+)
+
+
+SERIAL = "192.168.0.173:5555"
+HIERARCHY = "<?xml version='1.0' encoding='UTF-8'?><hierarchy rotation='0'><node text='local raw page' /></hierarchy>"
+
+
+@lru_cache(maxsize=1)
+def _png_base64() -> str:
+    raw = BytesIO()
+    Image.new("RGB", (1080, 2376), color="white").save(raw, format="PNG")
+    return base64.b64encode(raw.getvalue()).decode("ascii")
+
+
+class FakeAdbClient:
+    def __init__(self, *, model: str = "PKG110", android_version: str = "16") -> None:
+        self.calls: list[str] = []
+        self.inspection = DeviceInspection(
+            device=AdbDevice(serial=SERIAL, state="device", model=model),
+            model=model,
+            android_version=android_version,
+        )
+
+    def inspect(self, serial: str) -> DeviceInspection:
+        self.calls.append(serial)
+        return self.inspection
+
+
+class FakeReadDevice:
+    def __init__(
+        self,
+        *,
+        version: str = "8.17.0",
+        package: str = "com.xunmeng.pinduoduo",
+        activity: str = "com.xunmeng.pinduoduo.activity.NewPageActivity",
+        screen_size: tuple[int, int] = (1080, 2376),
+        screenshot: object | None = None,
+        hierarchy: object = HIERARCHY,
+    ) -> None:
+        self.version = version
+        self.package = package
+        self.activity = activity
+        self.screen_size = screen_size
+        self.screenshot = _png_base64() if screenshot is None else screenshot
+        self.hierarchy = hierarchy
+        self.calls: list[tuple[object, ...]] = []
+        self.app_info_reads = 0
+        self.current_reads = 0
+        self.window_reads = 0
+        self.post_version: str | None = None
+        self.post_package: str | None = None
+        self.post_activity: str | None = None
+        self.post_screen_size: tuple[int, int] | None = None
+
+    def app_info(self, package_name: str) -> dict[str, str]:
+        self.calls.append(("app_info", package_name))
+        self.app_info_reads += 1
+        version = self.post_version if self.app_info_reads > 1 and self.post_version is not None else self.version
+        return {"versionName": version}
+
+    def app_current(self) -> dict[str, str]:
+        self.calls.append(("app_current",))
+        self.current_reads += 1
+        package = self.post_package if self.current_reads > 1 and self.post_package is not None else self.package
+        activity = self.post_activity if self.current_reads > 1 and self.post_activity is not None else self.activity
+        return {"package": package, "activity": activity}
+
+    def window_size(self) -> tuple[int, int]:
+        self.calls.append(("window_size",))
+        self.window_reads += 1
+        if self.window_reads > 1 and self.post_screen_size is not None:
+            return self.post_screen_size
+        return self.screen_size
+
+    def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> object:
+        self.calls.append(("jsonrpc", method, params, timeout))
+        if method == "takeScreenshot":
+            return self.screenshot
+        if method == "dumpWindowHierarchy":
+            return self.hierarchy
+        raise AssertionError(f"unexpected RPC {method}")
+
+
+def _load_script() -> object:
+    script_path = CLIENT_ROOT / "scripts" / "capture_quantity_gate2_spike.py"
+    spec = spec_from_file_location("capture_quantity_gate2_spike_for_test", script_path)
+    assert spec is not None and spec.loader is not None
+    module = module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+def _namespace(**changes: object) -> argparse.Namespace:
+    values: dict[str, object] = {
+        "serial": SERIAL,
+        "goods_id": EXPECTED_GOODS_ID,
+        "state": "initial",
+        "declared_quantity": 1,
+        "output_dir": Path("evidence"),
+        "timeout": 10.0,
+        "adb": "adb",
+    }
+    values.update(changes)
+    return argparse.Namespace(**values)
+
+
+class QuantityGate2EvidenceTests(unittest.TestCase):
+    def _capturer(
+        self,
+        adb: FakeAdbClient,
+        device: FakeReadDevice,
+        *,
+        connector_calls: list[str] | None = None,
+    ) -> QuantityGate2EvidenceCapturer:
+        def connect(serial: str) -> FakeReadDevice:
+            if connector_calls is not None:
+                connector_calls.append(serial)
+            return device
+
+        return QuantityGate2EvidenceCapturer(adb, connect, timeout_seconds=2)
+
+    def test_initial_and_target_states_publish_only_raw_read_evidence(self) -> None:
+        for state, quantity in DECLARED_QUANTITIES.items():
+            with self.subTest(state=state), TemporaryDirectory() as temporary:
+                adb = FakeAdbClient()
+                device = FakeReadDevice()
+                connector_calls: list[str] = []
+                target = Path(temporary) / state
+
+                result = self._capturer(adb, device, connector_calls=connector_calls).capture(
+                    SERIAL,
+                    EXPECTED_GOODS_ID,
+                    state,
+                    quantity,
+                    target,
+                )
+
+                manifest = json.loads(result.manifest_path.read_text(encoding="utf-8"))
+                app = json.loads(result.app_path.read_text(encoding="utf-8"))
+                self.assertEqual(adb.calls, [SERIAL])
+                self.assertEqual(connector_calls, [SERIAL])
+                self.assertEqual(
+                    [call[1] for call in device.calls if call[0] == "jsonrpc"],
+                    ["takeScreenshot", "dumpWindowHierarchy"],
+                )
+                self.assertEqual(manifest["operation"], "t105-quantity-gate2-readonly-evidence")
+                self.assertEqual(manifest["human_declared_state"], state)
+                self.assertEqual(manifest["human_declared_quantity"], quantity)
+                self.assertEqual(
+                    manifest["human_declared_selection"],
+                    {"color": "黑色CHA(纯棉)", "size": "M(建议100-115)"},
+                )
+                self.assertEqual(manifest["review_status"], "human_review_required")
+                self.assertEqual(manifest["product"]["goods_id"], EXPECTED_GOODS_ID)
+                self.assertEqual(app["package"], "com.xunmeng.pinduoduo")
+                self.assertEqual(
+                    {path.name for path in target.iterdir()},
+                    {"screenshot.png", "hierarchy.xml", "app.json", "manifest.json"},
+                )
+                serialized = result.manifest_path.read_text(encoding="utf-8")
+                self.assertNotIn(SERIAL, serialized)
+                self.assertNotIn("NewPageActivity", serialized)
+                self.assertNotIn("local raw page", serialized)
+                for artifact in manifest["artifacts"]:
+                    self.assertEqual(len(artifact["sha256"]), 64)
+
+    def test_invalid_inputs_and_existing_target_fail_before_device_access(self) -> None:
+        scenarios = (
+            ("", EXPECTED_GOODS_ID, "initial", 1),
+            (f" {SERIAL}", EXPECTED_GOODS_ID, "initial", 1),
+            (SERIAL, "958756616606", "initial", 1),
+            (SERIAL, EXPECTED_GOODS_ID, "unknown", 1),
+            (SERIAL, EXPECTED_GOODS_ID, "initial", 2),
+            (SERIAL, EXPECTED_GOODS_ID, "target", 1),
+            (SERIAL, EXPECTED_GOODS_ID, "initial", True),
+        )
+        for serial, goods_id, state, quantity in scenarios:
+            with self.subTest(state=state, quantity=quantity), TemporaryDirectory() as temporary:
+                adb = FakeAdbClient()
+                connector_calls: list[str] = []
+                with self.assertRaises(QuantityGate2EvidenceError):
+                    self._capturer(adb, FakeReadDevice(), connector_calls=connector_calls).capture(
+                        serial,
+                        goods_id,
+                        state,
+                        quantity,
+                        Path(temporary) / "evidence",
+                    )
+                self.assertEqual(adb.calls, [])
+                self.assertEqual(connector_calls, [])
+
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            target.mkdir()
+            sentinel = target / "sentinel.txt"
+            sentinel.write_text("keep", encoding="utf-8")
+            adb = FakeAdbClient()
+            with self.assertRaises(QuantityGate2EvidenceError):
+                self._capturer(adb, FakeReadDevice()).capture(
+                    SERIAL, EXPECTED_GOODS_ID, "initial", 1, target
+                )
+            self.assertEqual(adb.calls, [])
+            self.assertEqual(sentinel.read_text(encoding="utf-8"), "keep")
+
+    def test_device_version_package_activity_and_screen_mismatch_fail_closed(self) -> None:
+        scenarios = (
+            (FakeAdbClient(model="OTHER"), FakeReadDevice()),
+            (FakeAdbClient(android_version="15"), FakeReadDevice()),
+            (FakeAdbClient(), FakeReadDevice(version="8.17.1")),
+            (FakeAdbClient(), FakeReadDevice(package="com.example.other")),
+            (FakeAdbClient(), FakeReadDevice(activity="")),
+            (FakeAdbClient(), FakeReadDevice(screen_size=(1080, 2400))),
+        )
+        for adb, device in scenarios:
+            with self.subTest(device=device.__dict__), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(QuantityGate2EvidenceError):
+                    self._capturer(adb, device).capture(
+                        SERIAL, EXPECTED_GOODS_ID, "initial", 1, target
+                    )
+                self.assertFalse(target.exists())
+                self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+                self.assertEqual(
+                    [call for call in device.calls if call[0] == "jsonrpc"],
+                    [],
+                )
+
+    def test_invalid_screenshot_or_hierarchy_leaves_no_partial_evidence(self) -> None:
+        scenarios = (
+            FakeReadDevice(screenshot="not base64"),
+            FakeReadDevice(screenshot=123),
+            FakeReadDevice(hierarchy="<not-hierarchy />"),
+            FakeReadDevice(hierarchy=123),
+        )
+        for device in scenarios:
+            with self.subTest(value=device.screenshot), TemporaryDirectory() as temporary:
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(QuantityGate2EvidenceError):
+                    self._capturer(FakeAdbClient(), device).capture(
+                        SERIAL, EXPECTED_GOODS_ID, "initial", 1, target
+                    )
+                self.assertFalse(target.exists())
+                self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_timeout_is_redacted_and_cleans_staging(self) -> None:
+        class TimeoutDevice(FakeReadDevice):
+            def jsonrpc_call(self, method: str, params: object = None, timeout: float = 10) -> object:
+                self.calls.append(("jsonrpc", method, params, timeout))
+                if method == "takeScreenshot":
+                    raise TimeoutError(f"secret {SERIAL} C:\\private\\evidence")
+                return super().jsonrpc_call(method, params, timeout)
+
+        with TemporaryDirectory() as temporary:
+            target = Path(temporary) / "evidence"
+            with self.assertRaises(QuantityGate2EvidenceTimeoutError) as raised:
+                self._capturer(FakeAdbClient(), TimeoutDevice()).capture(
+                    SERIAL, EXPECTED_GOODS_ID, "initial", 1, target
+                )
+            self.assertNotIn(SERIAL, str(raised.exception))
+            self.assertNotIn("private", str(raised.exception))
+            self.assertFalse(target.exists())
+            self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_post_capture_app_or_screen_drift_does_not_publish(self) -> None:
+        drift_mutators = (
+            lambda device: setattr(device, "post_version", "8.17.1"),
+            lambda device: setattr(device, "post_package", "com.example.other"),
+            lambda device: setattr(device, "post_activity", "OtherActivity"),
+            lambda device: setattr(device, "post_screen_size", (1080, 2400)),
+        )
+        for mutate in drift_mutators:
+            with TemporaryDirectory() as temporary:
+                device = FakeReadDevice()
+                mutate(device)
+                target = Path(temporary) / "evidence"
+                with self.assertRaises(QuantityGate2EvidenceError):
+                    self._capturer(FakeAdbClient(), device).capture(
+                        SERIAL, EXPECTED_GOODS_ID, "initial", 1, target
+                    )
+                self.assertFalse(target.exists())
+                self.assertEqual(list(Path(temporary).glob(".evidence.staging-*")), [])
+
+    def test_capturer_is_one_shot_even_after_rejection(self) -> None:
+        capturer = self._capturer(FakeAdbClient(), FakeReadDevice())
+        with TemporaryDirectory() as temporary:
+            with self.assertRaises(QuantityGate2EvidenceError):
+                capturer.capture("", EXPECTED_GOODS_ID, "initial", 1, Path(temporary) / "bad")
+            with self.assertRaises(QuantityGate2EvidenceError):
+                capturer.capture(SERIAL, EXPECTED_GOODS_ID, "initial", 1, Path(temporary) / "good")
+
+    def test_read_protocol_and_capturer_expose_no_page_actions(self) -> None:
+        forbidden = {
+            "click",
+            "swipe",
+            "press",
+            "pressKey",
+            "send_keys",
+            "set_text",
+            "open_product",
+            "open_sku_panel",
+            "set_quantity",
+            "go_to_order_confirm",
+            "submit_order_once",
+            "pay",
+        }
+        self.assertTrue(forbidden.isdisjoint(QuantityGate2ReadDevice.__dict__))
+        self.assertEqual(
+            {name for name in QuantityGate2EvidenceCapturer.__dict__ if not name.startswith("_")},
+            {"capture"},
+        )
+
+
+class QuantityGate2CliAndStaticBoundaryTests(unittest.TestCase):
+    def test_cli_validation_rejects_all_unapproved_combinations(self) -> None:
+        script = _load_script()
+        invalid = (
+            _namespace(serial=""),
+            _namespace(serial=f" {SERIAL}"),
+            _namespace(goods_id="958756616606"),
+            _namespace(state="unknown"),
+            _namespace(declared_quantity=2),
+            _namespace(state="target", declared_quantity=1),
+            _namespace(output_dir=Path("")),
+            _namespace(timeout=0),
+            _namespace(timeout=float("inf")),
+        )
+        for arguments in invalid:
+            with self.subTest(arguments=arguments), self.assertRaises(ValueError):
+                script.validate_arguments(arguments)  # type: ignore[attr-defined]
+
+    def test_cli_parses_exact_initial_and_target_arguments(self) -> None:
+        script = _load_script()
+        for state, quantity in DECLARED_QUANTITIES.items():
+            arguments = script.parse_arguments(  # type: ignore[attr-defined]
+                [
+                    "--serial",
+                    SERIAL,
+                    "--goods-id",
+                    EXPECTED_GOODS_ID,
+                    "--state",
+                    state,
+                    "--declared-quantity",
+                    str(quantity),
+                    "--output-dir",
+                    f"evidence-{state}",
+                ]
+            )
+            script.validate_arguments(arguments)  # type: ignore[attr-defined]
+
+    def test_cli_runtime_failure_does_not_echo_sensitive_values(self) -> None:
+        script = _load_script()
+        error = QuantityGate2EvidenceError(f"secret {SERIAL} C:\\private\\evidence raw body")
+        stderr = StringIO()
+        fake_capturer = unittest.mock.Mock()
+        fake_capturer.capture.side_effect = error
+        with (
+            patch.object(script, "QuantityGate2EvidenceCapturer", return_value=fake_capturer),
+            patch.dict(sys.modules, {"adbutils": unittest.mock.Mock(), "uiautomator2": unittest.mock.Mock()}),
+            redirect_stderr(stderr),
+        ):
+            result = script.main(
+                [
+                    "--serial",
+                    SERIAL,
+                    "--goods-id",
+                    EXPECTED_GOODS_ID,
+                    "--state",
+                    "initial",
+                    "--declared-quantity",
+                    "1",
+                    "--output-dir",
+                    "C:\\private\\evidence",
+                ]
+            )
+        self.assertEqual(result, 1)
+        self.assertNotIn(SERIAL, stderr.getvalue())
+        self.assertNotIn("private", stderr.getvalue())
+        self.assertNotIn("raw body", stderr.getvalue())
+
+    def test_stage_one_sources_contain_only_approved_rpc_method_literals(self) -> None:
+        expected_by_source = {
+            Path("src/cmbuyer_client/pdd/quantity_gate2_spike.py"): {
+                "takeScreenshot",
+                "dumpWindowHierarchy",
+            },
+            Path("scripts/capture_quantity_gate2_spike.py"): set(),
+        }
+        for relative, expected in expected_by_source.items():
+            tree = ast.parse((CLIENT_ROOT / relative).read_text(encoding="utf-8"))
+            rpc_literals = {
+                node.args[1].value
+                for node in ast.walk(tree)
+                if isinstance(node, ast.Call)
+                and isinstance(node.func, ast.Name)
+                and node.func.id == "_read_rpc"
+                and len(node.args) > 1
+                and isinstance(node.args[1], ast.Constant)
+                and isinstance(node.args[1].value, str)
+            }
+            self.assertEqual(rpc_literals, expected)
+            forbidden_attributes = {
+                node.attr
+                for node in ast.walk(tree)
+                if isinstance(node, ast.Attribute)
+                and node.attr in {"click", "swipe", "press", "pressKey", "set_text", "send_keys", "start_pdd_view_intent"}
+            }
+            self.assertEqual(forbidden_attributes, set())
+
+    def test_t103_and_t104_sources_do_not_import_quantity_gate2(self) -> None:
+        forbidden_import = "quantity_gate2"
+        sources = (
+            CLIENT_ROOT / "src/cmbuyer_client/pdd/sku_selection.py",
+            CLIENT_ROOT / "src/cmbuyer_client/pdd/sku_selection_runner.py",
+        )
+        for source in sources:
+            self.assertNotIn(forbidden_import, source.read_text(encoding="utf-8"))
+
+
+if __name__ == "__main__":
+    unittest.main()