feat(server): add local demo data mode

ENV.md

@@ -40,6 +40,12 @@ These variables are for local repo tooling and development workflows. They are n
 | `SERVERBEE_LOG__LEVEL` | `log.level` | string | `info` | Log level: `trace`, `debug`, `info`, `warn`, `error` |
 | `SERVERBEE_LOG__FILE` | `log.file` | string | `""` | Log file path. Empty means stdout only |
 
+### Development Only
+
+| Environment Variable | TOML Key | Type | Default | Description |
+|---------------------|----------|------|---------|-------------|
+| `SERVERBEE_DEV__DEMO_DATA` | `dev.demo_data` | bool | `false` | Reset and seed the local synthetic demo dataset. Only allowed when `database.path = "dev-demo.db"`; creates `admin` / `admin123` and in-memory demo agents for local development |
+
 ### OAuth (Optional)
 
 | Environment Variable | TOML Key | Type | Default | Description |

Makefile

@@ -56,6 +56,8 @@ COMMAND_TARGETS := \
 	server-dev-prod \
 	agent-dev \
 	dev-full \
+	dev-demo \
+	server-dev-demo \
 	docker-build \
 	docker-up \
 	docker-down \

apps/docs/content/docs/cn/configuration.mdx

@@ -61,6 +61,12 @@ ServerBee 使用 [figment](https://github.com/SergioBenitez/Figment) 库加载
 | `SERVERBEE_LOG__LEVEL` | `info` | 日志级别：`trace`/`debug`/`info`/`warn`/`error` |
 | `SERVERBEE_LOG__FILE` | `""` | 日志文件路径，留空输出到 stdout |
 
+#### 仅本地开发
+
+| 环境变量 | 默认值 | 说明 |
+|----------|--------|------|
+| `SERVERBEE_DEV__DEMO_DATA` | `false` | 重置并写入本地合成 demo 数据集。仅允许与 `SERVERBEE_DATABASE__PATH=dev-demo.db` 一起使用；会创建 `admin` / `admin123` 并启动内存中的 demo agents |
+
 #### OAuth（按需配置）
 
 | 环境变量 | 默认值 | 说明 |
@@ -266,6 +272,12 @@ session_ttl = 86400
 # 默认: 0
 max_servers = 0
 
+# --- 本地开发 ---
+[dev]
+# 重置并写入合成 demo 数据。仅允许 database.path = "dev-demo.db"。
+# 默认: false
+demo_data = false
+
 # --- 速率限制 ---
 [rate_limit]
 # 登录接口速率限制：每 IP 每分钟最大请求数