🐛 fix(vscode): 看板实时响应工单指派事件

Gitea 的 issue_assign 事件 X-Gitea-Event 值为 issues、action 为
assigned/unassigned,coordinator 此前只处理 opened/reopened/edited,
指派事件被丢弃。现复用 decideIssueAppend 门禁:指派给我 → issue/append
实时上卡(已在板上则原位刷新),与我无关 → issue/remove 撤卡。

vscode/src/webhook/coordinator.ts

@@ -409,6 +409,11 @@ class WebhookCoordinator {
       else if (event.action === 'edited') {
         await this.handleIssueEdited(event)
       }
+      else if (event.action === 'assigned' || event.action === 'unassigned') {
+        // Gitea 的 issue_assign 事件 X-Gitea-Event 也是 'issues',靠
+        // action 区分,不会走到独立的事件分支。
+        await this.handleIssueAssigned(event)
+      }
       else {
         logger.add({
           level: 'info',
@@ -671,6 +676,95 @@ class WebhookCoordinator {
     }
   }
 
+  /**
+   * issue assigned/unassigned:指派关系变化后,受影响机器的 'mine' 看板
+   * 要实时上卡/撤卡,不能等下次手动刷新。
+   */
+  private async handleIssueAssigned(event: IssueWebhookEvent): Promise<void> {
+    if (!this.ctx)
+      return
+    // 没面板就没什么可更新,下次打开看板的批量加载会兜底。
+    if (!this.activePanel)
+      return
+
+    const ws = workspace.workspaceFolders?.[0]?.uri.fsPath
+    if (!ws) {
+      logger.add({
+        level: 'warn',
+        source: 'webhook',
+        message: 'issue assigned 事件忽略：未打开工作区',
+      })
+      return
+    }
+    const remote = await detectRepo(ws)
+    if (!remote) {
+      logger.add({
+        level: 'warn',
+        source: 'webhook',
+        message: 'issue assigned 事件忽略：工作区未关联 gitea',
+      })
+      return
+    }
+    const token = await getToken(this.ctx, remote.host)
+    if (!token) {
+      logger.add({
+        level: 'warn',
+        source: 'webhook',
+        message: 'issue assigned 事件忽略：未配置 token',
+      })
+      return
+    }
+
+    // 与 handleIssueOpened 同一套 'mine' 可见性门禁:指派给我 → 上卡,
+    // 与我无关(含被取消指派)→ 撤卡。身份/payload 只在 'mine' 时解析,
+    // 省一次身份请求。
+    const scope = this.ctx.workspaceState.get<KanbanScope>(KANBAN_SCOPE_KEY) ?? 'mine'
+    let poster: string | undefined
+    let assignees: string[] = []
+    let me: string | undefined
+    if (scope === 'mine') {
+      const raw = event.raw as { issue?: { user?: { login?: string } | null, assignees?: Array<{ login?: string } | null> | null } | null } | null
+      poster = raw?.issue?.user?.login
+      assignees = (raw?.issue?.assignees ?? []).flatMap(a => (a?.login ? [a.login] : []))
+      me = await loginForToken(remote.host, token)
+    }
+    if (!decideIssueAppend({ scope, pendingCreatedLocally: false, poster, assignees, me })) {
+      logger.add({
+        level: 'info',
+        source: 'webhook',
+        message: `issue #${event.issueNumber} ${event.action === 'unassigned' ? '取消指派' : '指派'}后与我无关,scope=mine 撤卡`,
+        details: `poster=${poster ?? '<未知>'} assignees=[${assignees.join(',')}] me=${me ?? '<未知>'}`,
+      })
+      // 卡本来不在板上时前端 remove 是无害 no-op。
+      this.activePanel.postMessage({ type: 'issue/remove', issueNumber: event.issueNumber })
+      return
+    }
+    try {
+      const loaded = await loadSingleIssue({
+        host: remote.host,
+        owner: remote.owner,
+        repo: remote.repo,
+        token,
+        workspaceRoot: ws,
+        issueNumber: event.issueNumber,
+      })
+      const issue = loaded ? (await annotateReviewSessionFileExists(overlayLocalIssueState(this.ctx, [loaded], ws)))[0] : null
+      // 前端对 issue/append 按 number 去重原位替换:已在板上的卡刷新
+      // assignee,不在板上的新增——指派给我的工单借此实时上卡。
+      if (issue)
+        this.activePanel.postMessage({ type: 'issue/append', issue })
+    }
+    catch (err) {
+      const msg = err instanceof Error ? err.message : String(err)
+      logger.add({
+        level: 'warn',
+        source: 'webhook',
+        message: 'loadSingleIssue 失败（issue assigned）',
+        details: msg,
+      })
+    }
+  }
+
   /**
    * Issue `edited` payload: cc updates the issue body with `<!-- spx:spec=... -->`
    * / `<!-- spx:plan=... -->` annotation lines as it discovers spec/plan files.