fix: register native OpenCode skills

src/main/agent/runtime-skill-packages.ts

@@ -0,0 +1,26 @@
+import { cp, mkdir, rm } from 'node:fs/promises'
+import { join } from 'node:path'
+import type { RuntimeSkillPackage } from '../capabilities/capability-service'
+
+export async function stageRuntimeSkillPackages(
+  root: string,
+  skillPackages: readonly RuntimeSkillPackage[],
+  runtimeLabel: 'Continue' | 'OpenCode'
+): Promise<string> {
+  const skillsRoot = join(root, 'skills')
+  try {
+    await mkdir(skillsRoot, { recursive: true, mode: 0o700 })
+    for (const skill of skillPackages) {
+      await cp(skill.directory, join(skillsRoot, skill.id), {
+        recursive: true,
+        errorOnExist: true,
+        force: false,
+        verbatimSymlinks: true
+      })
+    }
+    return skillsRoot
+  } catch (error) {
+    await rm(root, { recursive: true, force: true })
+    throw new Error(`${runtimeLabel} Skill 注册失败`, { cause: error })
+  }
+}