chore(theme): astro 锁定 ~5.18.0（终审 Minor）+ docs: Plan 4 收官

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

.deps_siteforge_v812/openpyxl/chart/descriptors.py

@@ -0,0 +1,43 @@
+# Copyright (c) 2010-2024 openpyxl
+
+
+
+from openpyxl.descriptors.nested import (
+    NestedMinMax
+    )
+
+from openpyxl.descriptors import Typed
+
+from .data_source import NumFmt
+
+"""
+Utility descriptors for the chart module.
+For convenience but also clarity.
+"""
+
+class NestedGapAmount(NestedMinMax):
+
+    allow_none = True
+    min = 0
+    max = 500
+
+
+class NestedOverlap(NestedMinMax):
+
+    allow_none = True
+    min = -100
+    max = 100
+
+
+class NumberFormatDescriptor(Typed):
+    """
+    Allow direct assignment of format code
+    """
+
+    expected_type = NumFmt
+    allow_none = True
+
+    def __set__(self, instance, value):
+        if isinstance(value, str):
+            value = NumFmt(value)
+        super().__set__(instance, value)