feat: 初始化 BotanicalBuddy 项目并集成 Wi-Fi 配网组件

- 新增 wifi-connect 组件（AP 配网、DNS 劫持、Captive Portal）

- 支持长按按键进入配网，网页配置路由器 SSID/密码

- 增加清除已保存 Wi-Fi 参数能力（API + 页面按钮）

- 增加中文状态日志与中文注释，优化配网交互

- 补充组件文档：README、USER_GUIDE、QUICK_POSTER、BLOG

components/wifi-connect/include/wifi-connect.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <stdbool.h>
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+	WIFI_CONNECT_STATUS_IDLE = 0,
+	WIFI_CONNECT_STATUS_PROVISIONING,
+	WIFI_CONNECT_STATUS_CONNECTING,
+	WIFI_CONNECT_STATUS_CONNECTED,
+	WIFI_CONNECT_STATUS_FAILED,
+	WIFI_CONNECT_STATUS_TIMEOUT,
+} wifi_connect_status_t;
+
+typedef struct {
+	bool has_config;
+	char ssid[33];
+	char password[65];
+} wifi_connect_config_t;
+
+esp_err_t wifi_connect_init(void);
+esp_err_t wifi_connect_start(void);
+esp_err_t wifi_connect_stop(void);
+wifi_connect_status_t wifi_connect_get_status(void);
+esp_err_t wifi_connect_get_config(wifi_connect_config_t *config);
+esp_err_t wifi_connect_clear_config(void);
+
+#ifdef __cplusplus
+}
+#endif