✨ feat(vscode): 提交代码按钮实时显示进度并预检 git 身份

- spawnClaude 新增 onProgress 回调，给了回调就改走 stream-json 逐行输出，按行解析出工具调用 / 回复文本
- 新增 claudeProgress 把每行 NDJSON 压成可读进度短语
- 提交前先读 git user.name / user.email，缺失直接提示，不再让 claude 白跑
- 运行期间用带转圈的 toast 滚动显示进度，完成后带上 claude 的结果摘要

Claude-Session: https://claude.ai/code/session_01HTMgwaE3woqM5yvsHiuSAa

vscode/src/panel/handlers/toolbar.ts

@@ -8,9 +8,11 @@ import { resolveProfilePath } from '../../cc/profiles'
 import { spawnClaude } from '../../cc/spawnClaude'
 import { findEnvFiles, lockEnvFiles, unlockEnvFiles } from '../../files/envLock'
 import { checkBranchSync, runBranchSync } from '../../git/branchSync'
+import { missingGitIdentityKeys, readGitIdentity } from '../../git/identity'
 import { logger } from '../../logging/logger'
 import { getEffectiveCommitProfilePath, getSettings } from '../../settings/store'
 import { makeNonce } from '../KanbanPanel'
+import { dismiss, toast } from './handoffFlow'
 
 /**
  * Minimal structural typing for the bits of the built-in `vscode.git`
@@ -86,43 +88,65 @@ export async function handleCommitRun(panel: KanbanWebviewPanel): Promise<void>
     return
   }
 
+  // 身份缺失时 git commit 必然失败，提前拦下，别让 claude 白跑十几分钟
+  const missingIdentity = missingGitIdentityKeys(await readGitIdentity(workspaceRoot))
+  if (missingIdentity.length > 0) {
+    toast(
+      panel,
+      'error',
+      `git 未配置 ${missingIdentity.join(' 和 ')}，无法提交。请先执行：git config --global user.name "你的名字" && git config --global user.email "你的邮箱"`,
+      { dismissOnTimer: 15000 },
+    )
+    return
+  }
+
   panel.commitRunning = true
   panel.postMessage({ type: 'commit/state', running: true })
 
+  // 同一个 id 反复发 toast 会原地替换，正好用来滚动显示实时进度
+  const progressToastId = toast(panel, 'info', '提交中：正在启动 claude…', {
+    spinner: true,
+    dismissOnTimer: 31 * 60 * 1000,
+  })
+
   try {
     // claude -p 提交流程可能跑得比较久（要 git add / 编 commit message / git
     // commit），所以给一个比较宽松的超时（30 min）。
-    await spawnClaude({
+    const { resultText } = await spawnClaude({
       prompt: '提交下代码',
       cwd: workspaceRoot,
       profilePath: resolution.profilePath,
       timeoutMs: 30 * 60 * 1000,
       bare: true,
+      onProgress: (label) => {
+        toast(panel, 'info', `提交中：${label}`, {
+          id: progressToastId,
+          spinner: true,
+          dismissOnTimer: 31 * 60 * 1000,
+        })
+      },
     })
-    panel.postMessage({
-      type: 'toast/show',
-      id: makeNonce(),
-      level: 'success',
-      message: '提交完成',
-      dismissOnTimer: 5000,
-    })
+    toast(panel, 'success', formatCommitDone(resultText), { dismissOnTimer: 5000 })
   }
   catch (err) {
     const msg = err instanceof Error ? err.message : String(err)
-    panel.postMessage({
-      type: 'toast/show',
-      id: makeNonce(),
-      level: 'error',
-      message: `提交失败: ${msg}`,
-      dismissOnTimer: 8000,
-    })
+    toast(panel, 'error', `提交失败: ${msg}`, { dismissOnTimer: 8000 })
   }
   finally {
+    dismiss(panel, progressToastId)
     panel.commitRunning = false
     panel.postMessage({ type: 'commit/state', running: false })
   }
 }
 
+function formatCommitDone(resultText: string): string {
+  const firstLine = resultText.split('\n').map(l => l.trim()).find(l => l.length > 0) ?? ''
+  if (!firstLine)
+    return '提交完成'
+  const summary = firstLine.length > 100 ? `${firstLine.slice(0, 100)}…` : firstLine
+  return `提交完成：${summary}`
+}
+
 export async function handleBranchSyncCheck(panel: KanbanWebviewPanel): Promise<void> {
   const workspaceRoot = workspace.workspaceFolders?.[0]?.uri.fsPath
   const s = getSettings(panel.context)