diff --git a/.claude/settings.local.json b/.claude/settings.local.json
index 20f7dc8..36ae5ab 100644
--- a/.claude/settings.local.json
+++ b/.claude/settings.local.json
@@ -97,7 +97,8 @@
       "Bash(git -C \"E:/qia\" commit -m \"chore: 更新子模块\")",
       "Bash(git -C \"E:/qia\" status)",
       "Bash(git -C E:/qia/client diff --stat)",
-      "Bash(git -C E:/qia/server diff --stat)"
+      "Bash(git -C E:/qia/server diff --stat)",
+      "Bash(set PORT=3001)"
     ]
   }
 }
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 0000000..7825acb
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,53 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+"掐日子" (Qia Rizi) - AI 纪念日·提醒 - A Chinese calendar reminder app with anniversaries, reminders, and notes.
+
+## Project Structure
+
+```
+qia/
+├── client/          # Frontend (React 19 + TypeScript + Vite)
+├── server/          # Backend (Node.js + Express + Prisma)
+├── docs/            # Documentation
+└── ui/              # Design assets
+```
+
+## Commands
+
+### Frontend (client/)
+```bash
+cd client
+pnpm install
+pnpm dev      # Start dev server (http://localhost:5173)
+pnpm build    # Production build
+pnpm lint     # Run ESLint
+```
+
+### Backend (server/)
+```bash
+cd server
+npm install
+npm run dev   # Start dev server (http://localhost:3000)
+```
+
+## Backend API Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/api/auth/register` | POST | User registration |
+| `/api/auth/login` | POST | User login |
+| `/api/auth/logout` | POST | Logout |
+| `/api/auth/me` | GET | Get current user |
+| `/api/auth/refresh` | POST | Refresh token |
+| `/api/events` | GET/POST | Events CRUD |
+| `/api/events/:id` | PUT/DELETE | Event operations |
+| `/api/notes` | GET/PUT | Notes operations |
+| `/api/ai/parse` | POST | AI event parsing |
+
+## Frontend Architecture
+
+See `client/CLAUDE.md` for detailed frontend guidance.
diff --git a/client b/client
index ab12b07..2feb02b 160000
--- a/client
+++ b/client
@@ -1 +1 @@
-Subproject commit ab12b0717f6d2d38adfd402908dab133354bba9b
+Subproject commit 2feb02becf6a83bc5b82150747951d9f8a6aa22a
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diff --git a/server b/server
index e44183e..875f902 160000
--- a/server
+++ b/server
@@ -1 +1 @@
-Subproject commit e44183e3e01d5cfc3629aa0495dfc6bc5cd052a5
+Subproject commit 875f902ac318961469ea2eb286c2b35afa18932b
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