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CLAUDE.md

+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Internet Hospital (互联网医院) — a full-stack telemedicine platform with a Go backend (`server/`) and Next.js frontend (`web/`).
+
+## Commands
+
+### Backend (run from `server/`)
+
+```bash
+make run              # go run cmd/api/main.go
+make build            # binary → build/internet-hospital-api
+make test             # go test -v ./...
+make deps             # go mod download && go mod tidy
+```
+
+Single test: `cd server && go test -v -run TestName ./path/to/package/...`
+
+### Frontend (run from `web/`)
+
+```bash
+npm run dev           # next dev --turbopack --hostname 0.0.0.0
+npm run build         # production build
+npm run lint          # next lint
+```
+
+### Docker
+
+```bash
+docker-compose up     # postgres (5432) + redis (6379) + api (8080)
+```
+
+## Architecture
+
+### Backend (`server/`)
+
+- **Entry**: `cmd/api/main.go` — Gin server, GORM auto-migrate on startup, seeds admin/doctors/tools
+- **Framework**: Gin (HTTP), GORM (PostgreSQL), go-redis (Redis), gorilla/websocket
+- **Config**: Viper reads `configs/config.yaml` (copy from `config.example.yaml`)
+- **Module**: `internet-hospital`, Go 1.22
+
+**Key packages:**
+
+| Package | Purpose |
+|---------|---------|
+| `internal/model/` | All GORM models (40+), auto-migrated at startup |
+| `internal/agent/` | Agent platform integration — tool init, service, handlers, seed data |
+| `internal/service/` | Domain services: `admin/`, `user/`, `doctor/`, `consult/`, `preconsult/`, `chronic/`, `health/`, `payment/`, `doctorportal/` |
+| `pkg/agent/` | ReAct agent engine, tool registry, executor (cache/timeout/retry), memory manager |
+| `pkg/agent/tools/` | 19+ builtin tools + dynamic HTTP/CRUD/Expression tool factories |
+| `pkg/ai/` | AI client (DeepSeek/OpenAI-compatible), auto-falls back to MockChat when no API key |
+| `pkg/workflow/` | Workflow engine with 11 node types, expr-lang for code/condition nodes |
+| `pkg/middleware/` | CORS, JWT auth, TraceID |
+| `pkg/response/` | Unified response: `{code: 0, message, data, trace_id}` |
+
+**Circular import prevention**: `pkg/agent/tools/` cannot import `internal/agent/`. Instead, function variables (`AgentCallFn`, `WorkflowTriggerFn`, `SkillExecuteFn`) are injected via `WireCallbacks()` at startup.
+
+**Routes**: All under `/api/v1`. JWT via `middleware.JWTAuth()`, role checks via `middleware.RequireRole()`.
+
+### Frontend (`web/`)
+
+- **Framework**: Next.js 15 (App Router, Turbopack), React 19, TypeScript 5.9
+- **Styling**: Tailwind CSS v4 (CSS-based config, no tailwind.config.js) + Ant Design v5
+- **State**: Zustand v5 (client state, `userStore` persisted to localStorage) + TanStack Query v5 (server state)
+
+**Key directories:**
+
+| Directory | Purpose |
+|-----------|---------|
+| `src/app/(auth)/` | Login, Register pages |
+| `src/app/(main)/admin/` | Admin panel (agents, tools, workflows, pharmacy, etc.) |
+| `src/app/(main)/patient/` | Patient portal (consult, prescriptions, chronic care) |
+| `src/app/(main)/doctor/` | Doctor portal (workbench, consult, tasks) |
+| `src/api/` | API modules — `request.ts` (Axios with JWT), `sse.ts` (SSE streaming) |
+| `src/components/GlobalAIFloat/` | Floating AI assistant with SSE streaming, embedded views |
+| `src/store/` | Zustand stores |
+| `src/hooks/` | Custom hooks (auth, AI chat, WebSocket, etc.) |
+
+### Tailwind v4 + Ant Design v5 CSS Layer Setup
+
+This is critical and easy to break:
+1. `globals.css` declares `@layer antd;` FIRST, before `@import "tailwindcss"`
+2. `providers.tsx` wraps Ant Design with `<StyleProvider layer>` so antd CSS goes into `@layer antd`
+3. Result: Tailwind utilities override antd styles without `!important`
+4. Layer priority (low→high): `antd` → `theme` → `base` → `components` → `utilities`
+
+## Coding Conventions
+
+### Backend
+- Package `internalagent` for `internal/agent/` (avoid name collision)
+- `expr-lang/expr` imported as `exprlib` to avoid naming conflicts
+- Hot-reloadable: agents, HTTP tools, CRUD tools, expr tools (admin API, no restart needed)
+- `ai.GetClient()` returns nil when AI is disabled — all callers must nil-check
+- `SystemLog` model uses `Action`/`Resource`/`Detail` fields (not Level/Message/Module)
+
+### Frontend
+- `"use client"` directive required on all interactive components
+- Import alias: `@/` → `src/`
+- Use `const { message } = App.useApp()` for Ant Design feedback (not static `message.success()`)
+- API responses: access `res.data` directly (request.ts already extracts `response.data`)
+- Tailwind important modifier uses suffix `!` (e.g., `h-10!`) — avoid unless necessary
+- `next.config.ts` has `ignoreBuildErrors: true` — TS errors won't fail builds
+
+## Configuration
+
+### Backend (`server/configs/config.yaml`)
+- `ai.api_key: ""` → MockChat fallback mode (hardcoded test responses)
+- Set a real DeepSeek/OpenAI key for real AI functionality
+
+### Frontend
+- `NEXT_PUBLIC_API_BASE_URL` — API base URL (default `http://localhost:8080`)
+- `BACKEND_URL` — server-side rewrite target in next.config.ts
+
+## Test Accounts (Seeded on Startup)
+- Doctors: `13800000001-3` / `123456` (require `status = 'approved'` in DB)
+- Admin: created by `user.InitAdminUser()` on first run