docs(extensions): reference DEFAULT_HOOK_PRIORITY in normalize_priority

normalize_priority hard-coded the default as the literal 10 in both its
signature and docstring, duplicating DEFAULT_HOOK_PRIORITY. Reference the
constant in the signature and drop the literal from the docstring so the
default has a single source of truth.

Author: seiya-koji

src/specify_cli/extensions.py

@@ -90,15 +90,15 @@ class CompatibilityError(ExtensionError):
     pass
 
 
-def normalize_priority(value: Any, default: int = 10) -> int:
+def normalize_priority(value: Any, default: int = DEFAULT_HOOK_PRIORITY) -> int:
     """Normalize a stored priority value for sorting and display.
 
     Corrupted registry data may contain missing, non-numeric, non-positive, or
     boolean values. In those cases, fall back to the default priority.
 
     Args:
         value: Priority value to normalize (may be int, str, None, etc.)
-        default: Default priority to use for invalid values (default: 10)
+        default: Default priority to use for invalid values
 
     Returns:
         Normalized priority as positive integer (>= 1)