chore: 更新项目配置并添加测试脚本

- 添加workspace/和backup-cache/目录到.gitignore
- 新增desktop-session-switch-stream-smoke.ps1测试脚本
- 实现会话切换过程中的流式响应测试逻辑
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitignore

@@ -29,3 +29,8 @@ skills/**/__pycache__/
 skills/**/browser_data/
 skills/**/*.pyc
 skills/**/api_key.txt
+
+# 用户工作空间目录
+workspace/
+# 备份缓存目录
+backup-cache/

build/scripts/desktop-session-switch-stream-smoke.ps1

+param(
+  [int]$GatewayPort = 18889,
+  [string]$GatewayToken = 'qjc-bundled-runtime-token',
+  [int]$SmokePort = 4321,
+  [string]$SmokeToken = 'smoke-token',
+  [string]$BaseOutputDir,
+  [int]$TimeoutSeconds = 180,
+  [switch]$SkipMaterializeRuntime
+)
+
+$ErrorActionPreference = 'Stop'
+
+$repoRoot = (Resolve-Path (Join-Path $PSScriptRoot '..\..')).Path
+if (-not $BaseOutputDir) {
+  $BaseOutputDir = Join-Path $repoRoot '.tmp\desktop-session-switch-stream-smoke'
+}
+$BaseOutputDir = [System.IO.Path]::GetFullPath($BaseOutputDir)
+$userDataPath = Join-Path $BaseOutputDir 'user-data'
+$logsPath = Join-Path $BaseOutputDir 'logs'
+$smokeOutput = Join-Path $BaseOutputDir 'result.json'
+$electronSmokeScript = Join-Path $repoRoot 'build\scripts\electron-smoke.ps1'
+
+if (Test-Path $BaseOutputDir) {
+  Remove-Item $BaseOutputDir -Recurse -Force -ErrorAction SilentlyContinue
+}
+New-Item -ItemType Directory -Force -Path $BaseOutputDir, $userDataPath, $logsPath | Out-Null
+
+if (-not $SkipMaterializeRuntime) {
+  Write-Host "Materializing bundled runtime payload on port $GatewayPort"
+  powershell -ExecutionPolicy Bypass -File (Join-Path $repoRoot 'build\scripts\materialize-runtime-payload.ps1') -GatewayPort $GatewayPort -GatewayToken $GatewayToken
+  if ($LASTEXITCODE -ne 0) {
+    exit $LASTEXITCODE
+  }
+}
+
+$smokeSettingsConfig = [ordered]@{
+  copywriting = [ordered]@{
+    baseUrl = "http://127.0.0.1:$SmokePort/openai/v1"
+    apiKey = 'runtime-provider-token'
+    modelId = 'gpt-5.4-mini'
+  }
+} | ConvertTo-Json -Depth 6 -Compress
+
+$env:QJCLAW_SMOKE_SKIP_SETTINGS_SAVE = '1'
+$env:QJCLAW_SMOKE_SETTINGS_CONFIG_JSON = $smokeSettingsConfig
+$env:QJCLAW_SMOKE_SCENARIO = 'session-switch-stream'
+
+powershell -ExecutionPolicy Bypass -File $electronSmokeScript @(
+  '-SmokeOutput', $smokeOutput,
+  '-SmokePort', $SmokePort,
+  '-SmokeToken', $SmokeToken,
+  '-UserDataPath', $userDataPath,
+  '-LogsPath', $logsPath,
+  '-RuntimeMode', 'bundled-runtime',
+  '-ExpectBundledRuntime',
+  '-SmokeViewMode', 'chat',
+  '-SmokePrompt', 'Smoke session switching while assistant is still responding.',
+  '-TimeoutSeconds', $TimeoutSeconds
+)
+if ($LASTEXITCODE -ne 0) {
+  exit $LASTEXITCODE
+}
+
+$summaryScript = @"
+const fs = require('fs');
+const [smokeOutput] = process.argv.slice(1);
+const result = JSON.parse(fs.readFileSync(smokeOutput, 'utf8'));
+if (!result.ok) {
+  throw new Error(result.error || 'Desktop session-switch-stream smoke failed.');
+}
+const sendResult = result.sendResult || {};
+const streamSmoke = sendResult.streamSmoke || {};
+const scenario = sendResult.scenarioResult || {};
+const visibleMessages = Array.isArray(scenario.visibleMessagesAfterReturn) ? scenario.visibleMessagesAfterReturn : [];
+const cachedMessages = Array.isArray(scenario.cachedMessagesAfterReturn) ? scenario.cachedMessagesAfterReturn : [];
+const userMessage = visibleMessages.find((message) => String(message.role || '') === 'user') || null;
+const assistantMessage = [...visibleMessages].reverse().find((message) => String(message.role || '') === 'assistant') || null;
+if (String(sendResult.smokeScenario || '') !== 'session-switch-stream') {
+  throw new Error('Smoke did not report session-switch-stream scenario.');
+}
+if (String(streamSmoke.phase || '') !== 'completed') {
+  throw new Error('Stream did not complete: ' + String(streamSmoke.phase || ''));
+}
+if (Number(streamSmoke.startedEventCount || 0) < 1) {
+  throw new Error('Stream did not emit a started event.');
+}
+if (Number(streamSmoke.deltaEventCount || 0) < 1) {
+  throw new Error('Stream did not emit a delta event.');
+}
+if (Number(streamSmoke.completedEventCount || 0) < 1) {
+  throw new Error('Stream did not emit a completed event.');
+}
+if (Number(streamSmoke.errorEventCount || 0) !== 0) {
+  throw new Error('Stream emitted unexpected error events: ' + Number(streamSmoke.errorEventCount || 0));
+}
+if (!String(scenario.streamSessionId || '').startsWith('project:home-chat:')) {
+  throw new Error('Primary session was not a home-chat session: ' + String(scenario.streamSessionId || ''));
+}
+if (!String(scenario.alternateSessionId || '').startsWith('project:home-chat:')) {
+  throw new Error('Alternate session was not a home-chat session: ' + String(scenario.alternateSessionId || ''));
+}
+if (String(scenario.switchedAwayActiveSessionId || '') !== String(scenario.alternateSessionId || '')) {
+  throw new Error('Smoke did not remain on the alternate session after switching away.');
+}
+if (String(scenario.returnedActiveSessionId || '') !== String(scenario.streamSessionId || '')) {
+  throw new Error('Smoke did not return to the streaming session.');
+}
+if (['completed', 'fallback', 'error'].includes(String(scenario.phaseBeforeSwitch || ''))) {
+  throw new Error('Stream was already terminal before switching sessions: ' + String(scenario.phaseBeforeSwitch || ''));
+}
+if (['completed', 'fallback', 'error'].includes(String(scenario.phaseAtReturn || ''))) {
+  throw new Error('Stream was already terminal when the smoke returned to the original session: ' + String(scenario.phaseAtReturn || ''));
+}
+if (Number(scenario.completedEventCountAtReturn || 0) !== 0) {
+  throw new Error('Stream had already completed by the time the smoke returned to the original session.');
+}
+if (visibleMessages.length < 2) {
+  throw new Error('Visible messages after returning were incomplete: ' + visibleMessages.length);
+}
+if (cachedMessages.length < 2) {
+  throw new Error('Cached messages after returning were incomplete: ' + cachedMessages.length);
+}
+if (!userMessage || !String(userMessage.content || '').includes('Smoke session switching while assistant is still responding.')) {
+  throw new Error('Returned user message was missing or incorrect.');
+}
+if (!assistantMessage) {
+  throw new Error('Returned assistant placeholder was missing.');
+}
+if (!String(sendResult.lastAssistantMessage && sendResult.lastAssistantMessage.content || '').includes('Smoke stream ok:')) {
+  throw new Error('Final persisted assistant message did not contain the smoke reply.');
+}
+console.log(JSON.stringify({
+  ok: true,
+  smokeOutput,
+  streamSessionId: scenario.streamSessionId || null,
+  alternateSessionId: scenario.alternateSessionId || null,
+  returnedVisibleMessageCount: visibleMessages.length,
+  returnedCachedMessageCount: cachedMessages.length,
+  phaseBeforeSwitch: scenario.phaseBeforeSwitch || null,
+  phaseAtReturn: scenario.phaseAtReturn || null,
+  streamPhase: streamSmoke.phase || null,
+  startedEventCount: Number(streamSmoke.startedEventCount || 0),
+  deltaEventCount: Number(streamSmoke.deltaEventCount || 0),
+  completedEventCount: Number(streamSmoke.completedEventCount || 0)
+}, null, 2));
+"@
+
+$summary = & node -e $summaryScript $smokeOutput
+if ($LASTEXITCODE -ne 0) {
+  exit $LASTEXITCODE
+}
+
+Write-Output $summary