feat(sync): add Claude home sync parity across providers

src/sync/skills.ts

@@ -0,0 +1,21 @@
+import path from "path"
+import type { ClaudeSkill } from "../types/claude"
+import { ensureDir } from "../utils/files"
+import { forceSymlink, isValidSkillName } from "../utils/symlink"
+
+export async function syncSkills(
+  skills: ClaudeSkill[],
+  skillsDir: string,
+): Promise<void> {
+  await ensureDir(skillsDir)
+
+  for (const skill of skills) {
+    if (!isValidSkillName(skill.name)) {
+      console.warn(`Skipping skill with invalid name: ${skill.name}`)
+      continue
+    }
+
+    const target = path.join(skillsDir, skill.name)
+    await forceSymlink(skill.sourceDir, target)
+  }
+}