✨ feat(vscode): 手动删除 worktree 时连同 feature 分支一起删（本地+远程）

抽出共享 cleanupFeatureBranch（handlers/branchCleanup.ts）：受保护分支跳过、
远程走 gitea API、本地强删（git branch -D），全程 best-effort 只记日志。
「拖到完成」的分支清理改为复用它（71 行 → 12 行）；handleDeleteWorktree 在
删完 worktree 目录后同样调用它，确认框与完成提示带上分支名。

放在 handlers 层而非 git/branchSync.ts：后者刻意不依赖 vscode（有单测覆盖
deleteLocalBranch），本函数需 logger（→vscode）+ gitea API。

vscode/src/panel/handlers/issues.ts

@@ -13,7 +13,7 @@ import { buildCcCommand } from '../../cc/ccCommand'
 import { getBrainstormPrompt } from '../../cc/prompts'
 import { projectsDirFor, watchForNewSession } from '../../cc/sessionWatcher'
 import { spawnClaude } from '../../cc/spawnClaude'
-import { deleteLocalBranch, gitFetch } from '../../git/branchSync'
+import { gitFetch } from '../../git/branchSync'
 import { detectRepo } from '../../git/remote'
 import {
   addDependency,
@@ -33,6 +33,7 @@ import { getSettings } from '../../settings/store'
 import { webhookCoordinator } from '../../webhook/coordinator'
 import { pickRandomIssueColor, themeColorIdToIconUri } from '../issueColor'
 import { DEFAULT_PROFILE_PATH, makeNonce, PR_DIFF_SUMMARY_PROFILE_PATH } from '../KanbanPanel'
+import { cleanupFeatureBranch } from './branchCleanup'
 import * as sessions from './sessions'
 
 export async function handleColumnChange(panel: KanbanWebviewPanel, issueNumber: number, toColumn: IssueColumn): Promise<void> {
@@ -509,71 +510,15 @@ export async function handleColumnChange(panel: KanbanWebviewPanel, issueNumber:
 
   if (featureBranch) {
     const settingsForBranchCleanup = getSettings(panel.context)
-    const protectedBranches = new Set(
-      ['main', 'master', settingsForBranchCleanup.devBranch, settingsForBranchCleanup.autoBuildBranch]
-        .filter((branch): branch is string => Boolean(branch)),
-    )
-    if (protectedBranches.has(featureBranch)) {
-      logger.add({
-        level: 'warn',
-        source: 'panel',
-        message: `跳过受保护分支清理 ${featureBranch} (issue #${issueNumber})`,
-      })
-    }
-    else {
-      try {
-        await deleteBranch({
-          host: remote.host,
-          token,
-          owner: remote.owner,
-          repo: remote.repo,
-          branch: featureBranch,
-        })
-        logger.add({
-          level: 'info',
-          source: 'panel',
-          message: `已删除远程 feature 分支 ${featureBranch} (issue #${issueNumber})`,
-        })
-      }
-      catch (err) {
-        const message = err instanceof Error ? err.message : String(err)
-        logger.add({
-          level: 'warn',
-          source: 'panel',
-          message: `删除远程 feature 分支失败 ${featureBranch} (issue #${issueNumber})`,
-          details: message,
-        })
-      }
-
-      try {
-        const deleted = await deleteLocalBranch(workspaceRoot, featureBranch)
-        if (deleted.ok) {
-          logger.add({
-            level: 'info',
-            source: 'panel',
-            message: `已删除本地 feature 分支 ${featureBranch} (issue #${issueNumber})`,
-            details: deleted.stdout || deleted.stderr,
-          })
-        }
-        else {
-          logger.add({
-            level: 'warn',
-            source: 'panel',
-            message: `删除本地 feature 分支失败 ${featureBranch} (issue #${issueNumber})`,
-            details: deleted.stderr || deleted.stdout,
-          })
-        }
-      }
-      catch (err) {
-        const message = err instanceof Error ? err.message : String(err)
-        logger.add({
-          level: 'warn',
-          source: 'panel',
-          message: `删除本地 feature 分支抛错 ${featureBranch} (issue #${issueNumber})`,
-          details: message,
-        })
-      }
-    }
+    await cleanupFeatureBranch({
+      workspaceRoot,
+      branch: featureBranch,
+      issueNumber,
+      devBranch: settingsForBranchCleanup.devBranch,
+      autoBuildBranch: settingsForBranchCleanup.autoBuildBranch,
+      remote,
+      token,
+    })
   }
 
   // 6. 全部成功 → 增量推 done + 清掉 worktreePath + 标记 prMerged。