feat(server): deliver major backend expansion with v2 APIs, AI integration, and realtime infrastructure

- introduce broad v2 API surface across device, user, dance, and stackchandevice modules
- add admin/appstore management flows and strengthen service/controller layering
- implement XiaoZhi integration end-to-end, including token, refresh, license, and agent-related models/services
- expand social and media capabilities with pano support, post/comment workflow updates, and bundled dance music assets
- add websocket task pipeline and refactor realtime communication models/handlers
- enhance middleware, cron bootstrap, DAO/model coverage, and configuration/deployment manifests for production readiness
- add RSA utility support and update project documentation/config scaffolding

server/api/admin/admin.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/appstore/appstore.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/dance/dance.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/device/device.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/file/file.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/friend/friend.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/pano/pano.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/post/post.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/stackchandevice/stackchandevice.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/user/user.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/api/xiaozhi/xiaozhi.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 // =================================================================================
 // Code generated and maintained by GoFrame CLI tool. DO NOT EDIT.
 // =================================================================================

server/internal/controller/xiaozhi/xiaozhi_v1_get_xiao_zhi_generate_license_token.go

@@ -1,3 +1,8 @@
+/*
+SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
+SPDX-License-Identifier: MIT
+*/
+
 package xiaozhi
 
 import (

server/utility/rsa.go

@@ -12,7 +12,6 @@ import (
 	"crypto/x509"
 	"encoding/pem"
 	"errors"
-	"fmt"
 
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/os/gctx"
@@ -262,15 +261,6 @@ func GenerateFourKeys() {
 	clientPrivateKey, clientPublicKey = generateKeyPair(2048)
 
 	// Print PEM
-	//fmt.Println("=== Server Private Key ===")
-	//fmt.Println(keyToPEM(serverPrivateKey, true))
-	//fmt.Println("=== Server Public Key ===")
-	//fmt.Println(keyToPEM(serverPublicKey, false))
-
-	fmt.Println("=== Client Private Key ===")
-	fmt.Println(keyToPEM(clientPrivateKey, true))
-	fmt.Println("=== Client Public Key ===")
-	fmt.Println(keyToPEM(clientPublicKey, false))
 
 	// Mark initialization complete
 	initialized = true