diff --git a/docs/plans/2026-06-23-003-feat-calendar-schedule-plan.md b/docs/plans/2026-06-23-003-feat-calendar-schedule-plan.md
index 2a095a8..798ae28 100644
--- a/docs/plans/2026-06-23-003-feat-calendar-schedule-plan.md
+++ b/docs/plans/2026-06-23-003-feat-calendar-schedule-plan.md
@@ -720,3 +720,9 @@ Units within the same phase can be developed in parallel. Phases are sequential
 
 - Replacing professional calendar applications (Google Calendar, Notion Calendar) — AgentKit calendar's differentiation is Agent auto-detection, not full-featured calendar competition
 - Project management (task tracking, Gantt charts, dependency management)
+
+## Implementation History
+
+- **U1-U12 实现完成** (commits `2ea799f`..`394d734`): 12 个实现单元全部交付，104 个单元测试通过，ruff clean，frontend typecheck clean。
+- **Intent router 测试修复** (commit `4ea7801`): 修复预存测试失败——关键词匹配平局应保持列表顺序而非字母序。
+- **代码走查修复** (commit `3fdee65`): 使用 ce-code-review skill 多代理审查，发现 23 个问题（2 Critical / 15 Major / 6 Minor），全部修复。关键修复包括：RRULE 无限循环防护、邀请/事件类型授权校验、SQLite 外键 PRAGMA、DTSTART 时区 bug、同步循环 since 重置、CalDAV 超时、Outlook token 过期检测、Webhook SSRF 防护、ICS 导入 DoS 限制。