🐛 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.ts

@@ -0,0 +1,39 @@
+/**
+ * 实施 / 规划会话 resume 的落点决策。纯函数，不碰 vscode API，便于单测。
+ *
+ * 角色由调用方明确传入，不从「有没有 cwd」反推：worktree 被清理后
+ * 工单里的 worktreePath 会清空，靠 cwd 推断会把实施会话误判成规划。
+ */
+export type ResumeKind = 'implement' | 'brainstorm'
+
+export function resumeSessionRole(kind: ResumeKind): '实施' | '规划' {
+  return kind === 'implement' ? '实施' : '规划'
+}
+
+export function resumeTerminalName(kind: ResumeKind, sessionId: string, issueNumber?: number): string {
+  return issueNumber !== undefined
+    ? `issue-${issueNumber}-${resumeSessionRole(kind)}`
+    : `Claude · ${sessionId.slice(0, 8)}`
+}
+
+export interface ResumeCwdInput {
+  kind: ResumeKind
+  workspaceRoot: string
+  /** 已解析成绝对路径的 worktree；工单没记就 undefined */
+  worktreeAbs?: string
+  worktreeExists: boolean
+}
+
+export interface ResumeCwdPlan {
+  cwd: string
+  /** 实施会话但 worktree 已不在磁盘上（含工单里没记 worktreePath 的情况） */
+  worktreeMissing: boolean
+}
+
+export function planResumeCwd(input: ResumeCwdInput): ResumeCwdPlan {
+  if (input.kind !== 'implement')
+    return { cwd: input.workspaceRoot, worktreeMissing: false }
+  if (input.worktreeAbs && input.worktreeExists)
+    return { cwd: input.worktreeAbs, worktreeMissing: false }
+  return { cwd: input.workspaceRoot, worktreeMissing: true }
+}