🐛 fix(vscode): 恢复实施会话改按显式角色命名，worktree 清理后不再误标为规划

Claude-Session: https://claude.ai/code/session_012YFEAU7RsuCdinUNMS9tzv

vscode/src/panel/handlers/resumeTarget.test.ts

@@ -0,0 +1,37 @@
+import { describe, expect, it } from 'vitest'
+import { planResumeCwd, resumeTerminalName } from './resumeTarget'
+
+const ROOT = '/repo'
+const WT = '/repo-worktrees/feature-x'
+
+describe('resumeTerminalName', () => {
+  it('实施会话 → issue-N-实施', () => {
+    expect(resumeTerminalName('implement', 'abcdef1234', 398)).toBe('issue-398-实施')
+  })
+  it('规划会话 → issue-N-规划', () => {
+    expect(resumeTerminalName('brainstorm', 'abcdef1234', 398)).toBe('issue-398-规划')
+  })
+  it('没有工单号 → 按会话 id 前 8 位命名', () => {
+    expect(resumeTerminalName('implement', 'abcdef1234', undefined)).toBe('Claude · abcdef12')
+  })
+})
+
+describe('planResumeCwd', () => {
+  it('规划会话永远在工作区根目录', () => {
+    expect(planResumeCwd({ kind: 'brainstorm', workspaceRoot: ROOT, worktreeAbs: WT, worktreeExists: true }))
+      .toEqual({ cwd: ROOT, worktreeMissing: false })
+  })
+  it('实施会话 worktree 在 → cwd 用 worktree', () => {
+    expect(planResumeCwd({ kind: 'implement', workspaceRoot: ROOT, worktreeAbs: WT, worktreeExists: true }))
+      .toEqual({ cwd: WT, worktreeMissing: false })
+  })
+  it('实施会话 worktree 记了但磁盘上没了 → 退回根目录并标记缺失', () => {
+    expect(planResumeCwd({ kind: 'implement', workspaceRoot: ROOT, worktreeAbs: WT, worktreeExists: false }))
+      .toEqual({ cwd: ROOT, worktreeMissing: true })
+  })
+  it('实施会话工单里没记 worktreePath（PR 合并后清掉）→ 同样标记缺失，角色不变', () => {
+    expect(planResumeCwd({ kind: 'implement', workspaceRoot: ROOT, worktreeAbs: undefined, worktreeExists: false }))
+      .toEqual({ cwd: ROOT, worktreeMissing: true })
+    expect(resumeTerminalName('implement', 'abcdef1234', 398)).toBe('issue-398-实施')
+  })
+})