Jurchen Small Script characters

[jowilco]

See https://github.com/unicode-org/sah/issues/675 and L2/25-187.

[184-C5] Consensus: Provisionally assign 5 code points U+18CD6..U+18CDA in the Khitan Small Script block for characters used in Jurchen Small Script as described in L2/25-164. [Ref. 1.2 in L2/25-187]

[184-C6] Consensus: Update the representative glyph of U+18C3E KHITAN SMALL SCRIPT CHARACTER-18C3E as described in L2/25-152, for Unicode Version 18.0. [Ref. 1.2 in L2/25-187]

• https://github.com/unicode-org/utc-release-management/issues/231

[Copilot]

Pull Request Overview

This PR adds support for 5 Jurchen Small Script characters (U+18CD6..U+18CDA) provisionally assigned to the Khitan Small Script block, as per UTC decisions 184-C5 and 184-C6. The characters are integrated into the Unicode 18.0.0 release with appropriate properties and documentation.

Key Changes:

• Added 5 new Jurchen Small Script characters (18CD6-18CDA) to the Khitan Small Script block
• Updated character range from 18CD5 to 18CDA across all property files
• Added property comparison test file for validating the new character additions

Reviewed Changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
231.txt	Test configuration for comparing properties of newly added Jurchen characters with existing Khitan characters
DerivedName.txt	Extended character range to include 18CDA and updated total code points
DerivedLineBreak.txt	Updated line break properties for the extended range
DerivedGeneralCategory.txt	Updated general category assignments for the new characters
DerivedEastAsianWidth.txt	Extended East Asian Width property ranges
DerivedCombiningClass.txt	Updated combining class properties
DerivedBidiClass.txt	Extended bidirectional class assignments
WordBreakProperty.txt	Updated word break property ranges
SentenceBreakProperty.txt	Extended sentence break property ranges
VerticalOrientation.txt	Updated vertical orientation properties
UnicodeData.txt	Added character data entries for the 5 new characters
Scripts.txt	Extended Khitan_Small_Script range and updated count
PropList.txt	Updated Ideographic property ranges
NamesList.txt	Added documentation and annotations for Jurchen characters
LineBreak.txt	Extended line break property ranges
EastAsianWidth.txt	Updated East Asian Width assignments
DerivedCoreProperties.txt	Extended multiple core properties (Alphabetic, ID_Start, etc.)
DerivedAge.txt	Assigned Age 18.0 to the new characters

Comments suppressed due to low confidence (1)

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[roozbehp]

LGTM