Translate fuzzy entries from upstream sync

- asyncio-eventloop: fix ``signals`` → ``signal`` in msgstr
- itertools: update code block (-> → →, fix unique() indentation 3→4 spaces)
- pathlib: translate new PermissionError detail in OSError suppression note
- stdtypes: fix swapcase() code examples (bytes→str, new example), translate new "See also" sentence

Author: claude

library/asyncio-eventloop.po

@@ -3084,9 +3084,8 @@ msgid "Set signal handlers for SIGINT and SIGTERM"
 msgstr "設定 SIGINT 和 SIGTERM 的訊號處理程式"
 
 #: ../../library/asyncio-eventloop.rst:2058
-#, fuzzy
 msgid "(This ``signal`` example only works on Unix.)"
-msgstr "（此 ``signals`` 範例僅在 Unix 上運作。）"
+msgstr "（此 ``signal`` 範例僅在 Unix 上運作。）"
 
 #: ../../library/asyncio-eventloop.rst:2060
 msgid ""

library/itertools.po

@@ -1808,7 +1808,6 @@ msgstr ""
 "term:`產生器 <generator>`，則能保持高速度。"
 
 #: ../../library/itertools.rst:831
-#, fuzzy
 msgid ""
 "from itertools import (accumulate, batched, chain, combinations, compress,\n"
 "     count, cycle, filterfalse, groupby, islice, permutations, product,\n"
@@ -2160,7 +2159,7 @@ msgstr ""
 "\n"
 "def running_mean(iterable):\n"
 "    \"產生到目前為止所有值的平均值。\"\n"
-"    # running_mean([8.5, 9.5, 7.5, 6.5]) -> 8.5 9.0 8.5 8.0\n"
+"    # running_mean([8.5, 9.5, 7.5, 6.5]) → 8.5 9.0 8.5 8.0\n"
 "    return map(truediv, accumulate(iterable), count(1))\n"
 "\n"
 "def repeatfunc(function, times=None, *args):\n"
@@ -2242,10 +2241,10 @@ msgstr ""
 "                yield element\n"
 "\n"
 "def unique(iterable, key=None, reverse=False):\n"
-"   \"產生排序後的不重複元素。支援不可雜湊的輸入。\"\n"
-"   # unique([[1, 2], [3, 4], [1, 2]]) → [1, 2] [3, 4]\n"
-"   sequenced = sorted(iterable, key=key, reverse=reverse)\n"
-"   return unique_justseen(sequenced, key=key)\n"
+"    \"產生排序後的不重複元素。支援不可雜湊的輸入。\"\n"
+"    # unique([[1, 2], [3, 4], [1, 2]]) → [1, 2] [3, 4]\n"
+"    sequenced = sorted(iterable, key=key, reverse=reverse)\n"
+"    return unique_justseen(sequenced, key=key)\n"
 "\n"
 "def sliding_window(iterable, n):\n"
 "    \"將資料收集成重疊的固定長度區段或區塊。\"\n"

library/pathlib.po

@@ -2319,14 +2319,13 @@ msgstr ""
 "*recurse_symlinks* 設成 ``True`` 以總是跟隨符號連結。"
 
 #: ../../library/pathlib.rst:1369 ../../library/pathlib.rst:1400
-#, fuzzy
 msgid ""
 "Any :exc:`OSError` exceptions raised from scanning the filesystem are "
 "suppressed. This includes :exc:`PermissionError` when accessing directories "
 "without read permission."
 msgstr ""
-"從掃描檔案系統引發的任何 :exc:`OSError` 例外都會被抑制。在先前版本中，在許多"
-"情況下這種例外都會被抑制，但不是所有情況。"
+"從掃描檔案系統引發的任何 :exc:`OSError` 例外都會被抑制。這包括在存取沒有讀取"
+"權限的目錄時引發的\\ :exc:`PermissionError`。"
 
 #: ../../library/pathlib.rst:1373
 msgid ""

library/stdtypes.po

@@ -4408,13 +4408,12 @@ msgid ""
 msgstr ""
 
 #: ../../library/stdtypes.rst:2776
-#, fuzzy
 msgid ""
 ">>> 'Hello World'.swapcase()\n"
 "'hELLO wORLD'"
 msgstr ""
-">>> b'Hello World'.swapcase()\n"
-"b'hELLO wORLD'"
+">>> 'Hello World'.swapcase()\n"
+"'hELLO wORLD'"
 
 #: ../../library/stdtypes.rst:2781
 msgid ""
@@ -4423,20 +4422,16 @@ msgid ""
 msgstr ""
 
 #: ../../library/stdtypes.rst:2784
-#, fuzzy
 msgid ""
 ">>> 'straße'.swapcase().swapcase()\n"
 "'strasse'"
 msgstr ""
-">>> 'straße'.lower()\n"
-"'straße'\n"
-">>> 'straße'.casefold()\n"
+">>> 'straße'.swapcase().swapcase()\n"
 "'strasse'"
 
 #: ../../library/stdtypes.rst:2789
-#, fuzzy
 msgid "See also :meth:`str.lower` and :meth:`str.upper`."
-msgstr "另請參閱 :meth:`removeprefix` 和 :meth:`endswith`。"
+msgstr "另請參閱 :meth:`str.lower` 和 :meth:`str.upper`。"
 
 #: ../../library/stdtypes.rst:2794
 msgid ""