feat: Linux 真实实现层 — 从存根库变为可用生产力工具

新增 _linux_impl.py (800+行):
- LinuxNetwork: 真实IP/接口/DNS/网关/MAC (ip命令+/proc/net)
- LinuxBluetooth: 真实蓝牙状态/扫描/配对/连接 (bluetoothctl)
- LinuxSensors: 真实温度/CPU频率/风扇 (/sys/class/hwmon)
- LinuxAudio: 真实音量控制/静音 (amixer)
- LinuxClipboard: 真实剪贴板读写 (xclip+tkinter回退)
- LinuxPower: 真实CPU/内存/电池 (psutil+/sys/class/power_supply)
- LinuxLocation: 真实IP地理定位 (ip-api.com)
- LinuxNotify: 真实桌面通知 (notify-send)
- LinuxDisplay: 真实屏幕尺寸/截屏/鼠标位置 (xdotool+X11)
- LinuxUIAutomation: 真实点击/输入/按键/滚动 (xdotool)
- LinuxCamera: 真实摄像头拍照 (opencv/V4L2)
- LinuxProcess: 真实进程列表/系统信息/应用管理 (psutil+/proc)
- LinuxShell: 真实命令执行 (subprocess)

改造10+核心类使用Linux真实实现:
- BluetoothAdapter/SensorManager/AudioManager
- ConnectivityManager/WifiManager/TelephonyManager
- LocationManager/PowerManager/BatteryManager/Build
- ActivityManager/Activity/Toast/Display/ClipboardManager
- NotificationManager

15项真实行为测试全部通过:
- 真实IP: 10.60.218.244
- 真实位置: 北京 39.9042, 116.407
- 真实主机名: work-41-vci-g427c
- 真实内核: 5.15.120.byteatom-ck.14
- 真实内存: 1.8GB/3.8GB
- 真实进程列表

android_pyapi/android/os_power.py

@@ -18,6 +18,13 @@ from .._core import Stub, AndroidOnlyError, _app_data_dir
 
 from ..java.lang import RuntimeException
 
+# Linux 真实实现导入
+try:
+    from .._linux_impl import IS_LINUX, LinuxPower, LinuxProcess, HAS_PSUTIL as _HAS_PSUTIL
+    _USE_LINUX = IS_LINUX
+except ImportError:
+    _USE_LINUX = False
+
 IllegalArgumentException = type("IllegalArgumentException", (RuntimeException,), {})
 
 
@@ -505,6 +512,54 @@ class BatteryManager(Stub):
         self._discharge_time_remaining = -1
         self._is_capacity_estimated = False
         self._capacity_percentage = 100.0
+        if _USE_LINUX:
+            self._refresh_from_linux()
+
+    _LINUX_STATUS_MAP = {
+        "charging": BATTERY_STATUS_CHARGING,
+        "discharging": BATTERY_STATUS_DISCHARGING,
+        "not charging": BATTERY_STATUS_NOT_CHARGING,
+        "full": BATTERY_STATUS_FULL,
+        "unknown": BATTERY_STATUS_UNKNOWN,
+    }
+
+    def _get_linux_battery_info(self) -> dict:
+        """从 LinuxPower 获取真实电池信息"""
+        try:
+            return LinuxPower.get_battery_info() or {}
+        except Exception:
+            return {}
+
+    def _refresh_from_linux(self):
+        """用 Linux 真实电池信息刷新内部状态"""
+        info = self._get_linux_battery_info()
+        if not info:
+            return
+        self._present = bool(info.get("present", False))
+        level = info.get("level", -1)
+        if self._present and isinstance(level, (int, float)) and level >= 0:
+            self._battery_level = int(level)
+            self._capacity_percentage = float(level)
+            # BATTERY_PROPERTY_CAPACITY 在 Android 中返回百分比 (0-100)
+            self._capacity = int(level)
+        else:
+            # 无电池或电量未知
+            self._battery_level = -1
+            self._capacity_percentage = 0.0
+            self._capacity = -1
+        status_str = str(info.get("status", "unknown")).lower()
+        self._status = self._LINUX_STATUS_MAP.get(status_str, BATTERY_STATUS_UNKNOWN)
+        voltage = info.get("voltage", 0)
+        if isinstance(voltage, (int, float)):
+            self._voltage = int(voltage * 1000)  # V -> mV
+        temperature = info.get("temperature", 0)
+        if isinstance(temperature, (int, float)):
+            self._temperature = temperature  # 摄氏度
+        self._technology = info.get("technology", "") or "Li-ion"
+        if self._status == BATTERY_STATUS_CHARGING:
+            self._plugged = BATTERY_PLUGGED_AC
+        else:
+            self._plugged = 0
 
     @staticmethod
     def getInstance(context: Any) -> "BatteryManager":
@@ -513,6 +568,8 @@ class BatteryManager(Stub):
         return BatteryManager._instance
 
     def getIntProperty(self, id: int) -> int:
+        if _USE_LINUX:
+            self._refresh_from_linux()
         properties = {
             BATTERY_PROPERTY_CAPACITY: self._capacity,
             BATTERY_PROPERTY_CHARGE_COUNTER: self._charge_counter,
@@ -521,6 +578,9 @@ class BatteryManager(Stub):
             BATTERY_PROPERTY_ENERGY_COUNTER: self._energy_counter,
             BATTERY_PROPERTY_CHARGE_TIME_REMAINING: self._charge_time_remaining,
             BATTERY_PROPERTY_DISCHARGE_TIME_REMAINING: self._discharge_time_remaining,
+            BATTERY_PROPERTY_STATUS: self._status,
+            BATTERY_PROPERTY_TEMPERATURE: int(self._temperature),
+            BATTERY_PROPERTY_VOLTAGE: self._voltage,
         }
         return properties.get(id, 0)
 
@@ -528,9 +588,13 @@ class BatteryManager(Stub):
         return self.getIntProperty(id)
 
     def isCharging(self) -> bool:
+        if _USE_LINUX:
+            self._refresh_from_linux()
         return self._status == BATTERY_STATUS_CHARGING or self._status == BATTERY_STATUS_FULL
 
     def getBatteryLevel(self) -> int:
+        if _USE_LINUX:
+            self._refresh_from_linux()
         return self._battery_level
 
     def getInt(intent: Any, key: str, defaultValue: int) -> int:
@@ -687,9 +751,11 @@ class PowerManager(Stub):
         self._shutdown_requested = False
         self._thermal_status = THERMAL_STATUS_NONE
         self._power_save_state = PowerSaveState()
-        self._current_wake_up_reason = WAKE_REASON_UNKNOWN
+        self._current_wake_up_reason = PowerManager.WAKE_REASON_UNKNOWN
 
     def isInteractive(self) -> bool:
+        if _USE_LINUX:
+            return self.isScreenOn()
         return self._is_interactive
 
     def isPowerSaveMode(self) -> bool:
@@ -705,6 +771,13 @@ class PowerManager(Stub):
         return True
 
     def isScreenOn(self) -> bool:
+        if _USE_LINUX:
+            import os as _os_mod
+            display = _os_mod.environ.get("DISPLAY", "")
+            if display:
+                return True
+            wayland = _os_mod.environ.get("WAYLAND_DISPLAY", "")
+            return bool(wayland)
         return self._is_screen_on
 
     def isWakeLockLevelSupported(self, level: int) -> bool: