fix: 修复 Windows 兼容性问题

- 修复 setup.py 中 README.md 读取的编码问题 (UTF-8)
- 修复 system.py 中 errno 常量在 Windows 上不存在的问题
- 使用 getattr 安全获取平台特定的 errno 常量
- 测试全部通过 (24/24 能力可用)

android_pyapi/android/system.py

@@ -80,7 +80,7 @@ class OsConstants(Stub):
     SIGTTIN = 21
     SIGTTOU = 22
 
-    # errno 常量
+    # errno 常量 (使用 getattr 处理 Windows 上不存在的常量)
     EPERM = errno.EPERM
     ENOENT = errno.ENOENT
     ESRCH = errno.ESRCH
@@ -95,7 +95,7 @@ class OsConstants(Stub):
     ENOMEM = errno.ENOMEM
     EACCES = errno.EACCES
     EFAULT = errno.EFAULT
-    ENOTBLK = errno.ENOTBLK
+    ENOTBLK = getattr(errno, 'ENOTBLK', 15)  # Windows 不支持
     EBUSY = errno.EBUSY
     EEXIST = errno.EEXIST
     EXDEV = errno.EXDEV
@@ -106,7 +106,7 @@ class OsConstants(Stub):
     ENFILE = errno.ENFILE
     EMFILE = errno.EMFILE
     ENOTTY = errno.ENOTTY
-    ETXTBSY = errno.ETXTBSY
+    ETXTBSY = getattr(errno, 'ETXTBSY', 139)
     EFBIG = errno.EFBIG
     ENOSPC = errno.ENOSPC
     ESPIPE = errno.ESPIPE
@@ -123,16 +123,16 @@ class OsConstants(Stub):
     ELOOP = errno.ELOOP
     ENOMSG = errno.ENOMSG
     EIDRM = errno.EIDRM
-    ENOSTR = errno.ENOSTR
-    ENODATA = errno.ENODATA
-    ETIME = errno.ETIME
-    ENOSR = errno.ENOSR
-    EREMOTE = errno.EREMOTE
-    ENOLINK = errno.ENOLINK
+    ENOSTR = getattr(errno, 'ENOSTR', 125)
+    ENODATA = getattr(errno, 'ENODATA', 120)
+    ETIME = getattr(errno, 'ETIME', 137)
+    ENOSR = getattr(errno, 'ENOSR', 124)
+    EREMOTE = getattr(errno, 'EREMOTE', 10071)
+    ENOLINK = getattr(errno, 'ENOLINK', 121)
     EPROTO = errno.EPROTO
-    EMULTIHOP = errno.EMULTIHOP
-    EBADMSG = errno.EBADMSG
-    EOVERFLOW = errno.EOVERFLOW
+    EMULTIHOP = getattr(errno, 'EMULTIHOP', 10072)  # Windows 不支持
+    EBADMSG = getattr(errno, 'EBADMSG', 104)
+    EOVERFLOW = getattr(errno, 'EOVERFLOW', 132)
     EILSEQ = errno.EILSEQ
     ENOTSOCK = errno.ENOTSOCK
     EDESTADDRREQ = errno.EDESTADDRREQ
@@ -140,10 +140,10 @@ class OsConstants(Stub):
     EPROTOTYPE = errno.EPROTOTYPE
     ENOPROTOOPT = errno.ENOPROTOOPT
     EPROTONOSUPPORT = errno.EPROTONOSUPPORT
-    ESOCKTNOSUPPORT = errno.ESOCKTNOSUPPORT
-    EOPNOTSUPP = errno.EOPNOTSUPP
-    EPFNOSUPPORT = errno.EPFNOSUPPORT
-    EAFNOSUPPORT = errno.EAFNOSUPPORT
+    ESOCKTNOSUPPORT = getattr(errno, 'ESOCKTNOSUPPORT', 10044)
+    EOPNOTSUPP = getattr(errno, 'EOPNOTSUPP', 10045)
+    EPFNOSUPPORT = getattr(errno, 'EPFNOSUPPORT', 10046)
+    EAFNOSUPPORT = getattr(errno, 'EAFNOSUPPORT', 10047)
     EADDRINUSE = errno.EADDRINUSE
     EADDRNOTAVAIL = errno.EADDRNOTAVAIL
     ENETDOWN = errno.ENETDOWN
@@ -154,32 +154,32 @@ class OsConstants(Stub):
     ENOBUFS = errno.ENOBUFS
     EISCONN = errno.EISCONN
     ENOTCONN = errno.ENOTCONN
-    ESHUTDOWN = errno.ESHUTDOWN
-    ETOOMANYREFS = errno.ETOOMANYREFS
+    ESHUTDOWN = getattr(errno, 'ESHUTDOWN', 10058)
+    ETOOMANYREFS = getattr(errno, 'ETOOMANYREFS', 10059)
     ETIMEDOUT = errno.ETIMEDOUT
     ECONNREFUSED = errno.ECONNREFUSED
-    EHOSTDOWN = errno.EHOSTDOWN
+    EHOSTDOWN = getattr(errno, 'EHOSTDOWN', 10064)
     EHOSTUNREACH = errno.EHOSTUNREACH
     EALREADY = errno.EALREADY
     EINPROGRESS = errno.EINPROGRESS
-    ESTALE = errno.ESTALE
-    EUCLEAN = errno.EUCLEAN
-    ENOTNAM = errno.ENOTNAM
-    ENAVAIL = errno.ENAVAIL
-    EISNAM = errno.EISNAM
-    EREMOTEIO = errno.EREMOTEIO
-    EDQUOT = errno.EDQUOT
-    ENOMEDIUM = errno.ENOMEDIUM
-    EMEDIUMTYPE = errno.EMEDIUMTYPE
-    ECANCELED = errno.ECANCELED
-    ENOKEY = errno.ENOKEY
-    EKEYEXPIRED = errno.EKEYEXPIRED
-    EKEYREVOKED = errno.EKEYREVOKED
-    EKEYREJECTED = errno.EKEYREJECTED
-    EOWNERDEAD = errno.EOWNERDEAD
-    ENOTRECOVERABLE = errno.ENOTRECOVERABLE
-    ERFKILL = errno.ERFKILL
-    EHWPOISON = getattr(errno, 'EHWPOISON', 1001)
+    ESTALE = getattr(errno, 'ESTALE', 10070)
+    EUCLEAN = getattr(errno, 'EUCLEAN', 117)  # Windows 不支持
+    ENOTNAM = getattr(errno, 'ENOTNAM', 118)  # Windows 不支持
+    ENAVAIL = getattr(errno, 'ENAVAIL', 119)  # Windows 不支持
+    EISNAM = getattr(errno, 'EISNAM', 120)  # Windows 不支持
+    EREMOTEIO = getattr(errno, 'EREMOTEIO', 121)  # Windows 不支持
+    EDQUOT = getattr(errno, 'EDQUOT', 10069)
+    ENOMEDIUM = getattr(errno, 'ENOMEDIUM', 123)  # Windows 不支持
+    EMEDIUMTYPE = getattr(errno, 'EMEDIUMTYPE', 124)  # Windows 不支持
+    ECANCELED = getattr(errno, 'ECANCELED', 105)
+    ENOKEY = getattr(errno, 'ENOKEY', 126)  # Windows 不支持
+    EKEYEXPIRED = getattr(errno, 'EKEYEXPIRED', 127)  # Windows 不支持
+    EKEYREVOKED = getattr(errno, 'EKEYREVOKED', 128)  # Windows 不支持
+    EKEYREJECTED = getattr(errno, 'EKEYREJECTED', 129)  # Windows 不支持
+    EOWNERDEAD = getattr(errno, 'EOWNERDEAD', 133)
+    ENOTRECOVERABLE = getattr(errno, 'ENOTRECOVERABLE', 127)
+    ERFKILL = getattr(errno, 'ERFKILL', 132)  # Windows 不支持
+    EHWPOISON = getattr(errno, 'EHWPOISON', 1001)  # Windows 不支持
 
     def __init__(self):
         super().__init__()