This issue requests adding Thai script glyphs to JetBrains Mono. To begin, investigate the existing font structure and glyph creation process used by the project (e.g., FontForge, Glyphs, or custom tooling). Study the Thai Unicode range and required characters. There are no linked PRs or comments, so start by asking maintainers about the preferred font editor and style guidelines. Research how other fonts have added Thai support to maintain consistency.