diff --git a/vscode/src/panel/KanbanPanel.ts b/vscode/src/panel/KanbanPanel.ts
index ccf7a90..a906191 100644
--- a/vscode/src/panel/KanbanPanel.ts
+++ b/vscode/src/panel/KanbanPanel.ts
@@ -696,7 +696,10 @@ export class KanbanWebviewPanel {
    * Persistence failures are logged and swallowed.
    */
   // internal: handler 模块访问
-  async resolveIssueIcon(issueNumber: number): Promise<{ themeColor: ThemeColor, iconUri: Uri }> {
+  async resolveIssueIcon(
+    issueNumber: number,
+    presetState?: Record<string, unknown> | null,
+  ): Promise<{ themeColor: ThemeColor, iconUri: Uri }> {
     // Helper: produce both representations from a palette id.
     const pack = (id: string) => ({
       themeColor: new ThemeColor(id),
@@ -707,24 +710,34 @@ export class KanbanWebviewPanel {
     // pick so the icon is still stable across sessions.
     const fallbackId = PALETTE[((issueNumber % PALETTE.length) + PALETTE.length) % PALETTE.length]
 
-    const workspaceRoot = workspace.workspaceFolders?.[0]?.uri.fsPath
-    if (!workspaceRoot)
-      return pack(fallbackId)
-    const remote = await detectRepo(workspaceRoot)
-    if (!remote)
-      return pack(fallbackId)
-    const token = await getToken(this.context, remote.host)
-    if (!token)
-      return pack(fallbackId)
-
     let stored: string | undefined
-    try {
-      const state = await this.readIssueState(issueNumber)
-      if (typeof state.color === 'string' && state.color.length > 0)
-        stored = state.color
+    // 调用方已经读过 state（开会话热路径就一次）时直接复用，省一次远程往返；
+    // presetState 为 null 表示那次读取失败，按 tracker 不可达处理。
+    if (presetState !== undefined) {
+      if (presetState === null)
+        return pack(fallbackId)
+      if (typeof presetState.color === 'string' && presetState.color.length > 0)
+        stored = presetState.color
     }
-    catch (err) {
-      console.warn('[superpowers] failed to read state JSON for color:', err)
+    else {
+      const workspaceRoot = workspace.workspaceFolders?.[0]?.uri.fsPath
+      if (!workspaceRoot)
+        return pack(fallbackId)
+      const remote = await detectRepo(workspaceRoot)
+      if (!remote)
+        return pack(fallbackId)
+      const token = await getToken(this.context, remote.host)
+      if (!token)
+        return pack(fallbackId)
+
+      try {
+        const state = await this.readIssueState(issueNumber)
+        if (typeof state.color === 'string' && state.color.length > 0)
+          stored = state.color
+      }
+      catch (err) {
+        console.warn('[superpowers] failed to read state JSON for color:', err)
+      }
     }
 
     const { id, isNew } = resolveIssueColor(stored)
@@ -871,6 +884,15 @@ export class KanbanWebviewPanel {
    * `{ locked: false }` so a transient Gitea hiccup can't lock the user out
    * of starting a session.
    */
+  /**
+   * 主进程上一次算好的工单快照（issues/update 的 payload）。锁检查等只读
+   * 判断直接用它，省掉一次全量 loadIssues 往返；面板还没加载过时为 undefined。
+   */
+  // internal: handler 模块访问
+  snapshotIssues(): Issue[] | undefined {
+    return this.lastIssuesUpdate?.issues
+  }
+
   // internal: handler 模块访问
   async resolveLockedReason(
     issueNumber: number,
diff --git a/vscode/src/panel/handlers/issues.ts b/vscode/src/panel/handlers/issues.ts
index f7f306a..efacfdf 100644
--- a/vscode/src/panel/handlers/issues.ts
+++ b/vscode/src/panel/handlers/issues.ts
@@ -1,4 +1,5 @@
 import type { IssueColumn } from '../../gitea/types'
+import type { LockedReason } from '../issueLock'
 import type { KanbanWebviewPanel } from '../KanbanPanel'
 import { Buffer } from 'node:buffer'
 import { randomUUID } from 'node:crypto'
@@ -35,6 +36,7 @@ import { logger } from '../../logging/logger'
 import { getEffectivePrDiffSummaryProfilePath, getSettings } from '../../settings/store'
 import { webhookCoordinator } from '../../webhook/coordinator'
 import { pickRandomIssueColor, themeColorIdToIconUri } from '../issueColor'
+import { evaluateLockedReason } from '../issueLock'
 import { makeNonce } from '../KanbanPanel'
 import { cleanupFeatureBranch } from './branchCleanup'
 import * as sessions from './sessions'
@@ -1572,12 +1574,10 @@ export async function syncCloseGiteaIssue(panel: KanbanWebviewPanel, opts: {
 }
 
 /**
- * Server-side lock check for prerequisite gating. Fetches a fresh issues
- * snapshot (we don't trust webview state) and reports whether
- * `issueNumber` is blocked by an unfinished prerequisite. Mirrors the
- * webview-side `isIssueLocked` predicate: locked iff the issue has a
- * prerequisite that exists in the current snapshot and is not yet in the
- * `done` column.
+ * Server-side lock check for prerequisite gating（不信 webview 传来的状态）。
+ * 优先用主进程自己算好的工单快照——开会话是热路径，全量 loadIssues 要拉工单
+ * 列表、每张工单的评论、依赖和 PR，几秒起步；快照没有该工单（面板还没加载
+ * 完）时才退回一次全量拉取。
  *
  * Fail-open: any error fetching issues is logged and we return
  * `{ locked: false }` so a transient Gitea hiccup can't lock the user out
@@ -1586,8 +1586,12 @@ export async function syncCloseGiteaIssue(panel: KanbanWebviewPanel, opts: {
 export async function resolveLockedReason(
   panel: KanbanWebviewPanel,
   issueNumber: number,
-): Promise<{ locked: boolean, prerequisiteNumber?: number, prerequisiteColumn?: string }> {
+): Promise<LockedReason> {
   try {
+    const snapshot = panel.snapshotIssues()
+    if (snapshot?.some(i => i.number === issueNumber))
+      return evaluateLockedReason(snapshot, issueNumber)
+
     const workspaceRoot = workspace.workspaceFolders?.[0]?.uri.fsPath
     if (!workspaceRoot)
       return { locked: false }
@@ -1604,21 +1608,7 @@ export async function resolveLockedReason(
       repo: remote.repo,
       workspaceRoot,
     })
-    const issue = issues.find(i => i.number === issueNumber)
-    if (!issue)
-      return { locked: false }
-    if (issue.prerequisite === undefined)
-      return { locked: false }
-    const prereq = issues.find(i => i.number === issue.prerequisite)
-    if (!prereq)
-      return { locked: false }
-    if (prereq.column === 'done')
-      return { locked: false }
-    return {
-      locked: true,
-      prerequisiteNumber: prereq.number,
-      prerequisiteColumn: prereq.column,
-    }
+    return evaluateLockedReason(issues, issueNumber)
   }
   catch (err) {
     const message = err instanceof Error ? err.message : String(err)
diff --git a/vscode/src/panel/handlers/sessions.ts b/vscode/src/panel/handlers/sessions.ts
index f45b4f0..dc1cb49 100644
--- a/vscode/src/panel/handlers/sessions.ts
+++ b/vscode/src/panel/handlers/sessions.ts
@@ -73,6 +73,20 @@ export async function handleResumeSession(panel: KanbanWebviewPanel, sessionId:
       existing.show(false)
       return
     }
+    // state JSON 一次读、两处用（钩子的 branch + 终端图标颜色）。提前发起，
+    // 让这趟远程往返和后面的本地准备工作重叠；读失败为 null，两处各自退化。
+    const statePromise: Promise<Record<string, unknown> | null> | undefined
+      = issueNumber !== undefined
+        ? panel.readIssueState(issueNumber).catch((err) => {
+            logger.add({
+              level: 'warn',
+              source: 'panel',
+              message: `resume #${issueNumber} 读 state JSON 失败`,
+              details: err instanceof Error ? err.message : String(err),
+            })
+            return null
+          })
+        : undefined
     // 实施 / 头脑风暴各自独立：调用方传入对应字段，空 = DEFAULT。
     const effectiveProfilePath
       = sessionKind === 'implement'
@@ -127,28 +141,10 @@ export async function handleResumeSession(panel: KanbanWebviewPanel, sessionId:
     // (issueNumber === undefined) 钩子签名要 issueNumber，同样跳过。
     if (sessionKind === 'implement' && !worktreeMissing && issueNumber !== undefined && workspaceRoot) {
       const settingsForHook = getSettings(panel.context)
-      // 从 state JSON 读 branch；任何一步读不到就用空字符串（脚本里
-      // BRANCH env 仍能传，只是为空），不阻塞 resume 主流程。
-      let branchForHook = ''
-      try {
-        const remote = await detectRepo(workspaceRoot)
-        if (remote) {
-          const token = await getToken(panel.context, remote.host)
-          if (token) {
-            const stateObj = await panel.readIssueState(issueNumber)
-            if (stateObj && typeof stateObj.branch === 'string')
-              branchForHook = stateObj.branch
-          }
-        }
-      }
-      catch (err) {
-        logger.add({
-          level: 'warn',
-          source: 'panel',
-          message: `resume #${issueNumber} 读 state JSON 失败，钩子 branch 用空字符串`,
-          details: err instanceof Error ? err.message : String(err),
-        })
-      }
+      // 从 state JSON 读 branch；读不到就用空字符串（脚本里 BRANCH env 仍能
+      // 传，只是为空），不阻塞 resume 主流程。
+      const stateObj = await statePromise
+      const branchForHook = typeof stateObj?.branch === 'string' ? stateObj.branch : ''
       await panel.dispatchWorktreeHook('impl-tab-pre-create', {
         workspaceRoot,
         worktreePath: effectiveCwd!,
@@ -164,7 +160,7 @@ export async function handleResumeSession(panel: KanbanWebviewPanel, sessionId:
     // harmless in the editor tab, still useful if the same terminal ever
     // gets rendered in panel-view mode.
     const issueIcon = issueNumber !== undefined
-      ? await panel.resolveIssueIcon(issueNumber)
+      ? await panel.resolveIssueIcon(issueNumber, await statePromise)
       : undefined
     const terminal = window.createTerminal({
       name: terminalName,
@@ -198,6 +194,8 @@ export async function handleResumeSession(panel: KanbanWebviewPanel, sessionId:
   finally {
     if (lockKey !== undefined)
       panel.resumeInFlight.delete(lockKey)
+    // 无论开成、复用已有 tab 还是被前置锁拒绝，都要告诉 webview 收 spinner。
+    panel.postMessage({ type: 'session/tab-settled', sessionId })
   }
 }
 
@@ -303,6 +301,7 @@ export async function handleResumeReviewSession(panel: KanbanWebviewPanel, sessi
   }
   finally {
     panel.resumeInFlight.delete(lockKey)
+    panel.postMessage({ type: 'session/tab-settled', sessionId })
   }
 }
 
@@ -1379,6 +1378,7 @@ export async function handleResumeTestSession(panel: KanbanWebviewPanel, session
   }
   finally {
     panel.resumeInFlight.delete(lockKey)
+    panel.postMessage({ type: 'session/tab-settled', sessionId })
   }
 }
 
diff --git a/vscode/src/panel/issueLock.test.ts b/vscode/src/panel/issueLock.test.ts
new file mode 100644
index 0000000..8e4683d
--- /dev/null
+++ b/vscode/src/panel/issueLock.test.ts
@@ -0,0 +1,35 @@
+import type { Issue } from '../gitea/types'
+import { describe, expect, it } from 'vitest'
+import { evaluateLockedReason } from './issueLock'
+
+function issue(number: number, column: Issue['column'], prerequisite?: number): Issue {
+  return { number, title: `#${number}`, column, prerequisite } as Issue
+}
+
+describe('evaluateLockedReason', () => {
+  it('没有前置 → 放行', () => {
+    expect(evaluateLockedReason([issue(1, 'todo')], 1)).toEqual({ locked: false })
+  })
+
+  it('前置未完成 → 锁定并带上前置号和所在列', () => {
+    const issues = [issue(2, 'todo', 1), issue(1, 'in-progress')]
+    expect(evaluateLockedReason(issues, 2)).toEqual({
+      locked: true,
+      prerequisiteNumber: 1,
+      prerequisiteColumn: 'in-progress',
+    })
+  })
+
+  it('前置已完成 → 放行', () => {
+    const issues = [issue(2, 'todo', 1), issue(1, 'done')]
+    expect(evaluateLockedReason(issues, 2)).toEqual({ locked: false })
+  })
+
+  it('快照里没有前置工单 → 放行（不误锁）', () => {
+    expect(evaluateLockedReason([issue(2, 'todo', 99)], 2)).toEqual({ locked: false })
+  })
+
+  it('快照里没有这张工单 → 放行', () => {
+    expect(evaluateLockedReason([issue(1, 'todo')], 7)).toEqual({ locked: false })
+  })
+})
diff --git a/vscode/src/panel/issueLock.ts b/vscode/src/panel/issueLock.ts
new file mode 100644
index 0000000..4fcd409
--- /dev/null
+++ b/vscode/src/panel/issueLock.ts
@@ -0,0 +1,25 @@
+import type { Issue } from '../gitea/types'
+
+export interface LockedReason {
+  locked: boolean
+  prerequisiteNumber?: number
+  prerequisiteColumn?: string
+}
+
+/**
+ * 纯判定：工单被未完成的前置挡住才算锁定。快照里找不到工单或前置一律放行，
+ * 与 webview 的 `isIssueLocked` 保持同一语义。
+ */
+export function evaluateLockedReason(issues: Issue[], issueNumber: number): LockedReason {
+  const issue = issues.find(i => i.number === issueNumber)
+  if (!issue || issue.prerequisite === undefined)
+    return { locked: false }
+  const prereq = issues.find(i => i.number === issue.prerequisite)
+  if (!prereq || prereq.column === 'done')
+    return { locked: false }
+  return {
+    locked: true,
+    prerequisiteNumber: prereq.number,
+    prerequisiteColumn: prereq.column,
+  }
+}
diff --git a/vscode/src/panel/messages.ts b/vscode/src/panel/messages.ts
index b32e2f6..428abb5 100644
--- a/vscode/src/panel/messages.ts
+++ b/vscode/src/panel/messages.ts
@@ -53,6 +53,8 @@ export type ExtensionToWebview
     | { type: 'issues/update', issues: Issue[], scope: 'mine' | 'all', globalAutoReview: boolean, youtrackConfigured: boolean, me?: string, avatars?: Record<string, string> }
     | { type: 'issues/error', message: string }
     | { type: 'issue/patch', issueNumber: number, patch: { autoReview?: boolean, specFile?: string, planFile?: string, prDiffFile?: string | null, sessionId?: string | null, implementSessionId?: string | null, reviewSessionId?: string | null, reviewSessionFileExists?: boolean, testSessionId?: string | null, pr?: string | null, implementStatus?: 'running' | 'done' | 'failed' | null, column?: IssueColumn, worktreePath?: string | null, prMerged?: boolean, prMergedAt?: string | null, branch?: string | null, color?: string, worktreeExists?: boolean, brainstormTabOpen?: boolean, implementTabOpen?: boolean, reviewTabOpen?: boolean, testTabOpen?: boolean, profilePath?: string | null, brainstormProfilePath?: string | null, testProfilePath?: string | null, assignees?: string[], handoffAttachmentId?: string | null, handoffFrom?: string | null } }
+    /** 某个会话 id 的开 tab 请求已处理完（开成、复用或被拒都算），webview 据此停掉行内 spinner。 */
+    | { type: 'session/tab-settled', sessionId: string }
     | { type: 'issue/pr-diff-summary-done', issueNumber: number }
     | { type: 'handoff/users-result', issueNumber: number, users: string[] }
     | { type: 'handoff/done', issueNumber: number }
diff --git a/vscode/webview-ui/src/App.tsx b/vscode/webview-ui/src/App.tsx
index 3a3da11..8c93299 100644
--- a/vscode/webview-ui/src/App.tsx
+++ b/vscode/webview-ui/src/App.tsx
@@ -40,6 +40,7 @@ export function App() {
     dismissToast,
     openUrl,
     resumeSession,
+    isSessionTabPending,
     resumeReviewSession,
     startTestSession,
     resumeTestSession,
@@ -373,6 +374,7 @@ export function App() {
                 globalAutoReview={globalAutoReview}
                 onOpenInBrowser={openUrl}
                 onResumeSession={resumeSession}
+                isSessionTabPending={isSessionTabPending}
                 onResumeReviewSession={resumeReviewSession}
                 onStartTestSession={startTestSession}
                 onResumeTestSession={resumeTestSession}
diff --git a/vscode/webview-ui/src/components/BottomTabs.tsx b/vscode/webview-ui/src/components/BottomTabs.tsx
index b4dcba5..60d1e6c 100644
--- a/vscode/webview-ui/src/components/BottomTabs.tsx
+++ b/vscode/webview-ui/src/components/BottomTabs.tsx
@@ -29,6 +29,7 @@ interface BottomTabsProps {
   globalAutoReview: boolean
   onOpenInBrowser: (url: string) => void
   onResumeSession: (sessionId: string, kind: 'implement' | 'brainstorm', profilePath?: string, cwd?: string, issueNumber?: number) => void
+  isSessionTabPending: (sessionId: string) => boolean
   onResumeReviewSession: (sessionId: string, issueNumber: number, cwd?: string) => void
   onStartTestSession: (issueNumber: number) => void
   onResumeTestSession: (sessionId: string, issueNumber: number, cwd?: string) => void
@@ -127,6 +128,7 @@ export function BottomTabs(props: BottomTabsProps) {
             globalAutoReview={props.globalAutoReview}
             onOpenInBrowser={props.onOpenInBrowser}
             onResumeSession={props.onResumeSession}
+            isSessionTabPending={props.isSessionTabPending}
             onResumeReviewSession={props.onResumeReviewSession}
             onStartTestSession={props.onStartTestSession}
             onResumeTestSession={props.onResumeTestSession}
diff --git a/vscode/webview-ui/src/components/IssueDetailPanel.tsx b/vscode/webview-ui/src/components/IssueDetailPanel.tsx
index 49dba59..6878d52 100644
--- a/vscode/webview-ui/src/components/IssueDetailPanel.tsx
+++ b/vscode/webview-ui/src/components/IssueDetailPanel.tsx
@@ -39,6 +39,8 @@ interface IssueDetailPanelProps {
   globalAutoReview: boolean
   onOpenInBrowser: (url: string) => void
   onResumeSession: (sessionId: string, kind: 'implement' | 'brainstorm', profilePath?: string, cwd?: string, issueNumber?: number) => void
+  /** 会话 id 行的 spinner：该会话的开 tab 请求还没被扩展处理完就为 true。 */
+  isSessionTabPending: (sessionId: string) => boolean
   /**
    * Open a new terminal that runs `codex resume <id>` for the auto-review
    * conversation associated with this issue.
@@ -153,6 +155,7 @@ export function IssueDetailPanel({
   onUpdateTestProfilePath,
   onOpenLogs,
   me,
+  isSessionTabPending,
   onStartHandoff,
   onAcceptHandoff,
   isHandoffRunning,
@@ -252,6 +255,7 @@ export function IssueDetailPanel({
               key: 'sessionId',
               label: '头脑风暴会话id',
               type: 'action' as const,
+              pending: hasSession ? isSessionTabPending(issue!.sessionId!) : false,
               description: hasSession
                 ? '双击在新终端运行 claude --resume <id> 恢复对话；点 ▶ 续聊'
                 : '工单尚未关联 cc 会话；点 ▶ 新开一个规划会话并续聊',
@@ -274,6 +278,7 @@ export function IssueDetailPanel({
             key: 'implementSessionId',
             label: '实施会话id',
             type: 'action',
+            pending: issue?.implementSessionId ? isSessionTabPending(issue.implementSessionId) : false,
             description: issue?.worktreeExists
               ? '双击在新终端运行 claude --resume <id> 恢复实施对话（cwd 为 worktree）'
               : 'worktree 已清理，将在工作区根目录恢复（cc 可能提示原 cwd 不存在）',
@@ -298,6 +303,7 @@ export function IssueDetailPanel({
                 key: 'reviewSessionId',
                 label: '审查会话id',
                 type: 'action',
+                pending: issue.reviewSessionId ? isSessionTabPending(issue.reviewSessionId) : false,
                 description: '双击在新终端运行 codex resume <id> 查看审查会话（worktree 在则用之，否则工作区根目录）',
                 actionIcon: <Terminal className="size-3.5" />,
                 onAction: (v) => {
@@ -355,6 +361,7 @@ export function IssueDetailPanel({
               key: 'testSessionId',
               label: '测试会话id',
               type: 'action' as const,
+              pending: hasSession ? isSessionTabPending(issue!.testSessionId!) : false,
               description: hasSession
                 ? '双击在新终端运行 claude --resume <id> 在工作区根（main）恢复测试对话'
                 : '工单 PR 合并后点击右侧 ▶ 在工作区根（main）启动一个测试 cc tab（让 cc 了解代码后告诉你怎么测试）',
@@ -535,7 +542,7 @@ export function IssueDetailPanel({
         ],
       },
     ],
-    [onResumeSession, onResumeReviewSession, onResumeTestSession, onStartTestSession, onOpenFile, onImplement, onOpenPr, onGeneratePrDiffSummary, onOpenWorktree, onDeleteWorktree, onMergeBranch, onCloseSessionTab, onContinueBrainstorm, onClearBrainstormSession, onOpenLogs, issue, locked, lockTitle, globalAutoReview, prDiffSummaryRunning, profiles],
+    [onResumeSession, onResumeReviewSession, onResumeTestSession, onStartTestSession, onOpenFile, onImplement, onOpenPr, onGeneratePrDiffSummary, onOpenWorktree, onDeleteWorktree, onMergeBranch, onCloseSessionTab, onContinueBrainstorm, onClearBrainstormSession, onOpenLogs, issue, locked, lockTitle, globalAutoReview, prDiffSummaryRunning, profiles, isSessionTabPending],
   )
 
   // 同事的工单只读：属性表统一消毒，顶部只留查看类按钮。
diff --git a/vscode/webview-ui/src/components/property-grid.tsx b/vscode/webview-ui/src/components/property-grid.tsx
index ef158fd..af35aef 100644
--- a/vscode/webview-ui/src/components/property-grid.tsx
+++ b/vscode/webview-ui/src/components/property-grid.tsx
@@ -60,6 +60,11 @@ export interface PropertyDef {
   onAction?: (value: unknown) => void
   /** type='action' 专用：值前的图标 */
   actionIcon?: ReactNode
+  /**
+   * 主动作是否还在进行中。给了就由外部决定 spinner 何时收（真实进度），
+   * 不给则沿用点击后固定 1.5s 的即时反馈。
+   */
+  pending?: boolean
   /** type='file-link' 专用：双击文件名时调用，参数为 value（workspace 相对路径） */
   onOpen?: (path: string) => void
   /** type='file-link' 专用：点击右侧图标按钮时调用，用于重新扫描/加载 */
@@ -174,7 +179,8 @@ function PropertyRow({
   registerCellRef: (fullKey: string, el: HTMLDivElement | null) => void
 }) {
   const [showPassword, setShowPassword] = useState(false)
-  const [actionPending, setActionPending] = useState(false)
+  const [localActionPending, setLocalActionPending] = useState(false)
+  const actionPending = propDef.pending ?? localActionPending
   const pendingTimerRef = useRef<number | null>(null)
   const ro = propDef.readOnly
 
@@ -183,14 +189,16 @@ function PropertyRow({
       window.clearTimeout(pendingTimerRef.current)
   }, [])
 
-  /** 触发主动作并给出即时反馈：行内图标临时切换为 spinner，约 1.5s 后恢复 */
+  /** 触发主动作：外部受控时 spinner 交给 propDef.pending，否则本地转约 1.5s */
   function firePrimaryAction(fire: () => void): void {
     fire()
-    setActionPending(true)
+    if (propDef.pending !== undefined)
+      return
+    setLocalActionPending(true)
     if (pendingTimerRef.current != null)
       window.clearTimeout(pendingTimerRef.current)
     pendingTimerRef.current = window.setTimeout(() => {
-      setActionPending(false)
+      setLocalActionPending(false)
       pendingTimerRef.current = null
     }, 1500)
   }
diff --git a/vscode/webview-ui/src/hooks/useIssues.ts b/vscode/webview-ui/src/hooks/useIssues.ts
index 876c4d0..44fdda8 100644
--- a/vscode/webview-ui/src/hooks/useIssues.ts
+++ b/vscode/webview-ui/src/hooks/useIssues.ts
@@ -184,6 +184,8 @@ export interface UseIssuesResult {
   dismissToast: (id: string) => void
   openUrl: (url: string) => void
   resumeSession: (sessionId: string, kind: 'implement' | 'brainstorm', profilePath?: string, cwd?: string, issueNumber?: number) => void
+  /** 该会话 id 的开 tab 请求还没被扩展处理完 → 行内转 spinner。 */
+  isSessionTabPending: (sessionId: string) => boolean
   resumeReviewSession: (sessionId: string, issueNumber: number, cwd?: string) => void
   startTestSession: (issueNumber: number) => void
   resumeTestSession: (sessionId: string, issueNumber: number, cwd?: string) => void
@@ -479,6 +481,50 @@ export function useIssues(): UseIssuesResult {
     postMessage({ type: 'toast/open-url', url })
   }, [])
 
+  // 开 tab 是秒级操作（要读 state JSON、跑 pre-create 钩子），行内 spinner 要
+  // 真实反映进度：发请求时标 pending，扩展回 session/tab-settled 时清。消息万一
+  // 丢了就靠 PENDING_TIMEOUT_MS 兜底，spinner 不会永远转下去。
+  const [pendingSessionTabs, setPendingSessionTabs] = useState<Set<string>>(() => new Set())
+  const pendingTimersRef = useRef<Map<string, number>>(new Map())
+  const PENDING_TIMEOUT_MS = 60_000
+
+  const clearSessionTabPending = useCallback((sessionId: string): void => {
+    const timer = pendingTimersRef.current.get(sessionId)
+    if (timer !== undefined) {
+      window.clearTimeout(timer)
+      pendingTimersRef.current.delete(sessionId)
+    }
+    setPendingSessionTabs((prev) => {
+      if (!prev.has(sessionId))
+        return prev
+      const next = new Set(prev)
+      next.delete(sessionId)
+      return next
+    })
+  }, [])
+
+  const markSessionTabPending = useCallback((sessionId: string): void => {
+    const existing = pendingTimersRef.current.get(sessionId)
+    if (existing !== undefined)
+      window.clearTimeout(existing)
+    pendingTimersRef.current.set(
+      sessionId,
+      window.setTimeout(() => clearSessionTabPending(sessionId), PENDING_TIMEOUT_MS),
+    )
+    setPendingSessionTabs(prev => new Set(prev).add(sessionId))
+  }, [clearSessionTabPending])
+
+  const isSessionTabPending = useCallback(
+    (sessionId: string): boolean => pendingSessionTabs.has(sessionId),
+    [pendingSessionTabs],
+  )
+
+  useEffect(() => () => {
+    for (const timer of pendingTimersRef.current.values())
+      window.clearTimeout(timer)
+    pendingTimersRef.current.clear()
+  }, [])
+
   const resumeSession = useCallback((
     sessionId: string,
     kind: 'implement' | 'brainstorm',
@@ -486,24 +532,27 @@ export function useIssues(): UseIssuesResult {
     cwd?: string,
     issueNumber?: number,
   ): void => {
+    markSessionTabPending(sessionId)
     postMessage({ type: 'session/resume', sessionId, kind, profilePath, cwd, issueNumber })
-  }, [])
+  }, [markSessionTabPending])
 
   const focusSession = useCallback((issueNumber: number): void => {
     postMessage({ type: 'session/focus', issueNumber })
   }, [])
 
   const resumeReviewSession = useCallback((sessionId: string, issueNumber: number, cwd?: string): void => {
+    markSessionTabPending(sessionId)
     postMessage({ type: 'session/resume-review', sessionId, issueNumber, cwd })
-  }, [])
+  }, [markSessionTabPending])
 
   const startTestSession = useCallback((issueNumber: number): void => {
     postMessage({ type: 'session/start-test', issueNumber })
   }, [])
 
   const resumeTestSession = useCallback((sessionId: string, issueNumber: number, cwd?: string): void => {
+    markSessionTabPending(sessionId)
     postMessage({ type: 'session/resume-test', sessionId, issueNumber, cwd })
-  }, [])
+  }, [markSessionTabPending])
 
   const openFile = useCallback((path: string): void => {
     postMessage({ type: 'editor/open-file', path })
@@ -722,6 +771,9 @@ export function useIssues(): UseIssuesResult {
   useEffect(() => {
     const cleanup = onMessage((msg) => {
       switch (msg.type) {
+        case 'session/tab-settled':
+          clearSessionTabPending(msg.sessionId)
+          break
         case 'issues/loading':
           setRefreshing(true)
           setState(prev => prev.status === 'ready' ? prev : { status: 'loading' })
@@ -938,5 +990,5 @@ export function useIssues(): UseIssuesResult {
     return cleanup
   }, [clearPrDiffSummaryRunning, markHandoffRunning])
 
-  return { state, settings, avatars, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, refreshing, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startTestSession, resumeTestSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, continueBrainstorm, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, clearBrainstormSession, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, release, runRelease, cherryPick, dismissCherryPick, confirmCherryPick, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
+  return { state, settings, avatars, isSessionTabPending, globalAutoReview, youtrackConfigured, importYouTrack, toasts, profiles, setIssues, refresh, refreshing, scope, toggleScope, saveSettings, listYouTrackProjects, youtrackProjects, dismissSettings, requestEditAuth, createIssue, dismissToast, openUrl, resumeSession, resumeReviewSession, startTestSession, resumeTestSession, focusSession, openFile, implement, generatePrDiffSummary, isPrDiffSummaryRunning, openPr, openWorktree, deleteWorktree, mergeBranch, deleteIssue, closeIssue, closeSessionTab, continueBrainstorm, changeColumn, setDependency, clearDependency, updateIssueAutoReview, updateIssueProfilePath, updateIssueBrainstormProfilePath, clearBrainstormSession, updateIssueTestProfilePath, logs, fetchLogs, clearLogs, pendingSelectId, clearPendingSelect, commitRunning, runCommit, hasChanges, release, runRelease, cherryPick, dismissCherryPick, confirmCherryPick, envLocked, envFileCount, envLockRunning, envLockTitle, toggleEnvLock, me, handoffUsers, requestHandoffUsers, startHandoff, acceptHandoff, isHandoffRunning }
 }
diff --git a/vscode/webview-ui/src/lib/messages.ts b/vscode/webview-ui/src/lib/messages.ts
index 19ac578..36b46de 100644
--- a/vscode/webview-ui/src/lib/messages.ts
+++ b/vscode/webview-ui/src/lib/messages.ts
@@ -84,6 +84,8 @@ export type ExtensionToWebview
     | { type: 'issues/update', issues: Issue[], scope: 'mine' | 'all', globalAutoReview: boolean, youtrackConfigured: boolean, me?: string, avatars?: Record<string, string> }
     | { type: 'issues/error', message: string }
     | { type: 'issue/patch', issueNumber: number, patch: { autoReview?: boolean, specFile?: string, planFile?: string, prDiffFile?: string | null, sessionId?: string | null, implementSessionId?: string | null, reviewSessionId?: string | null, reviewSessionFileExists?: boolean, testSessionId?: string | null, pr?: string | null, implementStatus?: 'running' | 'done' | 'failed' | null, column?: IssueColumn, worktreePath?: string | null, prMerged?: boolean, prMergedAt?: string | null, branch?: string | null, color?: string, worktreeExists?: boolean, brainstormTabOpen?: boolean, implementTabOpen?: boolean, reviewTabOpen?: boolean, testTabOpen?: boolean, profilePath?: string | null, brainstormProfilePath?: string | null, testProfilePath?: string | null, assignees?: string[], handoffAttachmentId?: string | null, handoffFrom?: string | null } }
+    /** 某个会话 id 的开 tab 请求已处理完（开成、复用或被拒都算），webview 据此停掉行内 spinner。 */
+    | { type: 'session/tab-settled', sessionId: string }
     | { type: 'issue/pr-diff-summary-done', issueNumber: number }
     | { type: 'handoff/users-result', issueNumber: number, users: string[] }
     | { type: 'session-handoff/users-result', users: string[] }