fix(skills): preserve SKILL.md content when renaming

Rename skills by moving the skill directory and updating frontmatter
name instead of recreate-with-stub-description, which wiped the body
and supporting files.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/ui/src/lib/i18n/messages/en.settings.ts

@@ -721,6 +721,7 @@ export const settingsDict = {
   'settings.skills.sidebar.toast.renameLoadFailed': 'Failed to load skill details',
   'settings.skills.sidebar.toast.removeOldAfterRenameFailed': 'Failed to remove old skill after rename',
   'settings.skills.sidebar.toast.renameFailed': 'Failed to rename skill',
+  'settings.skills.sidebar.toast.skillRenamed': 'Skill renamed to "{name}"',
   'settings.skills.sidebar.deleteDialog.title': 'Delete Skill',
   'settings.skills.sidebar.deleteDialog.description': 'Are you sure you want to delete skill "{name}"?',
   'settings.skills.sidebar.renameDialog.title': 'Rename Skill',