Release v2.4.1

Fixed

• Delimiter sort now applies a uniform whitespace policy: the input's outer whitespace is preserved, interior gaps collapse to the dominant pattern, and spacing no longer depends on which item lands at each boundary.
• Delimiter sort drops the structural empty segment at the leading boundary, so inputs like ,a,b sort to ,a,b instead of gaining duplicate delimiters.
• Delimiter sort now treats magic Lua pattern characters ((, ), ., %, +, *, ?, ^, $, -) as literal delimiters.
• Dot-repeat (.) of the sort operator uses the configuration active at the first invocation instead of reading live config at repeat time.
• The sort operator warns and aborts instead of erroring when the buffer is non-modifiable.
• Multi-line character motions are only promoted to line motions when both boundaries are line-shaped, preserving partial selections that span 3+ lines.
• Whitespace trimming now handles Unicode whitespace (NEL, NBSP, ideographic space, line/paragraph separators, em/en quads, etc.) rather than only ASCII %s.
• Inner/around sortable-region text objects (is, as) snap deterministically to the nearest non-empty segment when the cursor is on a delimiter or past the last segment, and preserve the visual selection when invoked from visual mode.
• Numeric sort orders empty segments after numbers instead of coercing them to zero.
• :Sort flag parsing now binds flag letters (b, n, o, x, i, u, z) first and warns on unknown characters; combining s/t with other flags no longer silently consumes them as delimiters.
• parse_number requires the whole input to be a valid number for its base — 5xyz no longer parses as 5.
• is_pure_number accepts leading-decimal numbers like .5 and -.5.
• Natural-sort parser treats a leading - before digits as a sign, so -10, -5 sorts numerically in mixed lists.
• config.setup validates override types (delimiters, mappings, whitespace, booleans) and warns on invalid values instead of silently accepting them.
• config.setup no longer mutates the caller's overrides table.