feat(skills): agent settings Skills tab with uninstall and archive/chat import (#179)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/skills/src/index.ts

@@ -89,8 +89,8 @@ export function parseSkillFrontmatter(content: string): SkillMetadata | null {
 /** Root directory of library files: the package's `skills/` (both dist/ and src/ sit one level below the package root, so one level up reaches it). */
 const SKILLS_ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..", "skills");
 
-/** Character rule for Skill names (directory names): prevents path traversal. */
-const SKILL_NAME_PATTERN = /^[A-Za-z0-9_-]+$/;
+/** Character rule for Skill names (directory names): prevents path traversal (exported for the server's archive-install validation). */
+export const SKILL_NAME_PATTERN = /^[A-Za-z0-9_-]+$/;
 
 /**
  * Reads a single library directory to construct a LibrarySkill; returns undefined if SKILL.md