diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4f77ac03..41783da6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,7 +36,13 @@ jobs:
           FAILS=$(grep -oE '[0-9]+ fail' /tmp/ci-test.log | tail -1 | grep -oE '[0-9]+')
           if [ -z "$FAILS" ]; then FAILS=0; fi
           echo "Failures: $FAILS (baseline: 0) | bun test exit: $TEST_EXIT"
-          # Show last 30 lines of test output
+          # Show failed tests first (they appear before the summary, which tail misses)
+          if [ "$FAILS" -gt 0 ]; then
+            echo "::group::Failed tests"
+            grep -E '\(fail\)' /tmp/ci-test.log || true
+            echo "::endgroup::"
+          fi
+          # Show last 30 lines for pass/fail summary
           tail -30 /tmp/ci-test.log
           if [ "$FAILS" -le 0 ]; then
             echo "✅ Test baseline OK"
diff --git a/docs/BRANCH_EVENT_SOURCING.md b/docs/BRANCH_EVENT_SOURCING.md
new file mode 100644
index 00000000..bf8def16
--- /dev/null
+++ b/docs/BRANCH_EVENT_SOURCING.md
@@ -0,0 +1,34 @@
+# 分支：persist/coordinator-event-sourcing
+
+## 存了什么
+
+这是 CCP 采用 **Anthropic 原版事件溯源方案** 的快照——纯 JSONL 事件日志 + fold 投影，没有任何 SQLite 黑板代码。
+
+## 核心文件
+
+| 文件 | 作用 |
+|------|------|
+| `src/coordinator/teamEventStore.ts` | Event 类型定义 + EventStore 接口 + LocalFileEventStore（JSONL） |
+| `src/coordinator/teamProjection.ts` | `applyEvent()` + `projectTeamState()` + `renderTeamContext()` |
+| `src/coordinator/eventStoreInstance.ts` | 单例 + auto-switching（本地 JSONL / 远程 HTTP） |
+| `src/coordinator/remoteEventStore.ts` | HTTP 客户端 EventStore（Phase 2 跨机器） |
+| `src/coordinator/eventHttpServer.ts` | Bun.serve 事件服务器 |
+| `src/coordinator/coordinatorMode.ts` | Coordinator mode 启动 + compaction hook（**不含黑板代码**） |
+| `docs/Coordinator_Event_Log_设计文档.md` | 中文设计文档 |
+| `docs/Coordinator_Event_Log_Design_Doc.md` | 英文设计文档 |
+| `docs/plans/2026-06-11-coordinator-event-log.md` | 实施计划 |
+
+## 为什么不继续用
+
+讨论结论（2026-06-12）：
+- 事件溯源在 CCP 的约束下是正确的——因为没有 SQLite
+- 但它有维护成本：新事件类型需要改 fold、checkpoint 逻辑、1400 行代码
+- Hermes 的黑板（SQLite + structured keys）证明了更简单的方案可行
+- 最终决定：事件日志 + fold → SQLite 黑板（kv 表 + events 表同一事务）
+
+## 为什么保留
+
+- 这是 Anthropic/CCB 的原生设计思路，有参考价值
+- 事件溯源的语义（有类型的事件、结构化聚合）比 pure last-write-wins 更丰富
+- 未来如果需要在 CCP 中做完整审计链路，事件表的 schema 可以从这里借鉴
+- 符合 CCP "保留上游设计痕迹" 的理念
diff --git a/packages/builtin-tools/src/tools/WebSearchTool/__tests__/adapterFactory.test.ts b/packages/builtin-tools/src/tools/WebSearchTool/__tests__/adapterFactory.test.ts
index 4e5353d8..f44c852e 100644
--- a/packages/builtin-tools/src/tools/WebSearchTool/__tests__/adapterFactory.test.ts
+++ b/packages/builtin-tools/src/tools/WebSearchTool/__tests__/adapterFactory.test.ts
@@ -12,15 +12,25 @@ mock.module('src/utils/model/providers.js', () => ({
 const { createAdapter } = await import('../adapters/index')
 
 const originalWebSearchAdapter = process.env.WEB_SEARCH_ADAPTER
+const originalUseOpenAI = process.env.CLAUDE_CODE_USE_OPENAI
+const originalUseGemini = process.env.CLAUDE_CODE_USE_GEMINI
+const originalUseGrok = process.env.CLAUDE_CODE_USE_GROK
 
 afterEach(() => {
   isFirstPartyBaseUrl = true
 
+  // Restore WEB_SEARCH_ADAPTER
   if (originalWebSearchAdapter === undefined) {
     delete process.env.WEB_SEARCH_ADAPTER
   } else {
     process.env.WEB_SEARCH_ADAPTER = originalWebSearchAdapter
   }
+
+  // Clear third-party provider flags so they don't hijack adapter selection
+  // (CI or local env may have CLAUDE_CODE_USE_OPENAI=1 set)
+  delete process.env.CLAUDE_CODE_USE_OPENAI
+  delete process.env.CLAUDE_CODE_USE_GEMINI
+  delete process.env.CLAUDE_CODE_USE_GROK
 })
 
 describe('createAdapter', () => {
diff --git a/src/tasks/LocalAgentTask/__tests__/LocalAgentTask.test.ts b/src/tasks/LocalAgentTask/__tests__/LocalAgentTask.test.ts
index 7300cbc9..f387c723 100644
--- a/src/tasks/LocalAgentTask/__tests__/LocalAgentTask.test.ts
+++ b/src/tasks/LocalAgentTask/__tests__/LocalAgentTask.test.ts
@@ -9,7 +9,23 @@ const noop = () => {}
 mock.module('src/utils/debug.ts', debugMock)
 mock.module('src/utils/log.ts', logMock)
 
+const RealSessionStorage = await import('src/utils/sessionStorage.js')
+const RealDiskOutput = await import('src/utils/task/diskOutput.js')
+const RealMessageQueueManager = await import('src/utils/messageQueueManager.js')
+const RealState = await import('src/bootstrap/state.js')
+const RealSpeculation = await import(
+  'src/services/PromptSuggestion/speculation.js'
+)
+const RealCleanupRegistry = await import('src/utils/cleanupRegistry.js')
+const RealAbortController = await import('src/utils/abortController.js')
+const RealSdkProgress = await import('src/utils/task/sdkProgress.js')
+const RealSdkEventQueue = await import('src/utils/sdkEventQueue.js')
+const RealXml = await import('src/constants/xml.js')
+const RealAnalytics = await import('src/services/analytics/index.js')
+const RealCollapseReadSearch = await import('src/utils/collapseReadSearch.js')
+
 mock.module('src/utils/sessionStorage.js', () => ({
+  ...RealSessionStorage,
   getAgentTranscriptPath: (id: string) => `/tmp/transcripts/${id}.jsonl`,
   recordSidechainTranscript: async () => {},
   recordQueueOperation: noop,
@@ -17,6 +33,7 @@ mock.module('src/utils/sessionStorage.js', () => ({
 }))
 
 mock.module('src/utils/task/diskOutput.js', () => ({
+  ...RealDiskOutput,
   evictTaskOutput: noop,
   getTaskOutputPath: (id: string) => `/tmp/output/${id}`,
   initTaskOutputAsSymlink: async () => {},
@@ -26,12 +43,14 @@ mock.module('src/utils/task/diskOutput.js', () => ({
 // Capture enqueuePendingNotification calls for verification
 const enqueuedNotifications: string[] = []
 mock.module('src/utils/messageQueueManager.js', () => ({
+  ...RealMessageQueueManager,
   enqueuePendingNotification: (cmd: any) => {
     enqueuedNotifications.push(cmd.value)
   },
 }))
 
 mock.module('src/bootstrap/state.js', () => ({
+  ...RealState,
   getSdkAgentProgressSummariesEnabled: () => false,
   getSessionId: () => 'test-session-001',
   getProjectRoot: () => '/test/project',
@@ -40,15 +59,18 @@ mock.module('src/bootstrap/state.js', () => ({
 }))
 
 mock.module('src/services/PromptSuggestion/speculation.js', () => ({
+  ...RealSpeculation,
   abortSpeculation: noop,
 }))
 
 const cleanupFns: (() => void)[] = []
 mock.module('src/utils/cleanupRegistry.js', () => ({
+  ...RealCleanupRegistry,
   registerCleanup: () => noop,
 }))
 
 mock.module('src/utils/abortController.js', () => ({
+  ...RealAbortController,
   createAbortController: () => new AbortController(),
   createChildAbortController: (parent: AbortController) => {
     const ac = new AbortController()
@@ -58,14 +80,17 @@ mock.module('src/utils/abortController.js', () => ({
 }))
 
 mock.module('src/utils/task/sdkProgress.js', () => ({
+  ...RealSdkProgress,
   emitTaskProgress: noop,
 }))
 
 mock.module('src/utils/sdkEventQueue.js', () => ({
+  ...RealSdkEventQueue,
   enqueueSdkEvent: noop,
 }))
 
 mock.module('src/constants/xml.js', () => ({
+  ...RealXml,
   TASK_NOTIFICATION_TAG: 'task_notification',
   TASK_ID_TAG: 'task_id',
   TOOL_USE_ID_TAG: 'tool_use_id',
@@ -79,6 +104,7 @@ mock.module('src/constants/xml.js', () => ({
 }))
 
 mock.module('src/services/analytics/index.js', () => ({
+  ...RealAnalytics,
   logEvent: noop,
   logEventAsync: async () => {},
   stripProtoFields: (v: any) => v,
@@ -88,6 +114,7 @@ mock.module('src/services/analytics/index.js', () => ({
 }))
 
 mock.module('src/utils/collapseReadSearch.js', () => ({
+  ...RealCollapseReadSearch,
   getToolSearchOrReadInfo: () => undefined,
 }))