✨ feat(vscode): handoff 清单类型与校验

Claude-Session: https://claude.ai/code/session_011cEyL6k351U2BzX1Qmygph

vscode/src/cc/handoffManifest.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest'
+import { handoffAttachmentName, parseHandoffManifest } from './handoffManifest'
+
+const good = {
+  version: 1,
+  issue: 42,
+  from: 'chw',
+  createdAt: '2026-08-26T00:00:00Z',
+  branch: 'feature/x',
+  sessions: { implementSessionId: 'a' },
+  profiles: {},
+  claude: [{ id: 'a', kind: 'implement' }],
+  codex: [],
+}
+
+describe('handoffAttachmentName', () => {
+  it('固定命名', () => {
+    expect(handoffAttachmentName(42)).toBe('spx-handoff-issue-42.tgz')
+  })
+})
+
+describe('parseHandoffManifest', () => {
+  it('合法清单原样返回', () => {
+    expect(parseHandoffManifest(JSON.stringify(good), 42)).toEqual(good)
+  })
+  it('issue 不匹配 → 抛错', () => {
+    expect(() => parseHandoffManifest(JSON.stringify(good), 43)).toThrow(/42/)
+  })
+  it('version 不是 1 → 抛错', () => {
+    expect(() => parseHandoffManifest(JSON.stringify({ ...good, version: 2 }), 42)).toThrow(/version/)
+  })
+  it('claude 条目 kind 非法 → 抛错', () => {
+    expect(() => parseHandoffManifest(JSON.stringify({ ...good, claude: [{ id: 'a', kind: 'x' }] }), 42)).toThrow(/claude/)
+  })
+  it('不是 JSON → 抛错', () => {
+    expect(() => parseHandoffManifest('nope', 42)).toThrow()
+  })
+})