refactor: 认证系统重构 + DevTools CLI 重写 + 文档全面更新

- auth: Login 简化为管理员始终通过 .env 验证，GetProfile 修正 admin DB 查询
- devtools: .sh/.bat 同步重写为完整 CLI (start/stop/status/logs/build/db:*)
- docs: 新增 devtools.md，重写 Deploy.md (三种方式+Windows说明)，更新 README/gateway-api
- voice-service: DashScope 实时流式 STT 支持
- gateway: Phase 6 多模型配置 + 多端客户端管理 + WebSocket 增强

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend/voice-service/internal/config/config.go

@@ -11,20 +11,44 @@ type Config struct {
 	MaxAudioSize    int64 // 字节
 
 	// DashScope STT 配置
-	DashScopeAPIKey string
-	DashScopeModel  string
+	DashScopeAPIKey          string
+	DashScopeModel           string // 离线/非实时 ASR 模型
+	DashScopeSTTRealtime     string // 实时 ASR 模型
 }
 
-// Load 从环境变量加载配置
+// Load 从 models.json 和环境变量加载配置。
+// models.json 优先级高于环境变量。
 func Load() *Config {
+	// 从 models.json 加载 ASR 配置
+	modelsAPIKey, modelsOffline, modelsRealtime := LoadModelsConfig()
+
+	// .env / 环境变量作为回退
+	envAPIKey := getEnv("DASHSCOPE_API_KEY", "")
+	envModel := getEnv("DASHSCOPE_STT_MODEL", "qwen3-asr-flash-2026-02-10")
+	envRealtime := getEnv("DASHSCOPE_STT_REALTIME_MODEL", "qwen3-asr-flash-realtime")
+
+	apiKey := modelsAPIKey
+	if apiKey == "" {
+		apiKey = envAPIKey
+	}
+	offlineModel := modelsOffline
+	if offlineModel == "" {
+		offlineModel = envModel
+	}
+	realtimeModel := modelsRealtime
+	if realtimeModel == "" {
+		realtimeModel = envRealtime
+	}
+
 	return &Config{
-		Port:            getEnv("PORT", "8093"),
-		WhisperBinary:   getEnv("WHISPER_BINARY", "./whisper.cpp/main"),
-		WhisperModel:    getEnv("WHISPER_MODEL", "./whisper.cpp/models/ggml-small.bin"),
-		WhisperLanguage: getEnv("WHISPER_LANGUAGE", "zh"),
-		MaxAudioSize:    10 * 1024 * 1024, // 10MB
-		DashScopeAPIKey: getEnv("DASHSCOPE_API_KEY", ""),
-		DashScopeModel:  getEnv("DASHSCOPE_STT_MODEL", "gummy-chat-v1"),
+		Port:                 getEnv("PORT", "8093"),
+		WhisperBinary:        getEnv("WHISPER_BINARY", "./whisper.cpp/main"),
+		WhisperModel:         getEnv("WHISPER_MODEL", "./whisper.cpp/models/ggml-small.bin"),
+		WhisperLanguage:      getEnv("WHISPER_LANGUAGE", "zh"),
+		MaxAudioSize:         10 * 1024 * 1024, // 10MB
+		DashScopeAPIKey:      apiKey,
+		DashScopeModel:       offlineModel,
+		DashScopeSTTRealtime: realtimeModel,
 	}
 }