refactor(auth): modularize auth plugin with physical subpackages and decoupled services

backend/plugins/domain/auth/service/service.go

@@ -0,0 +1,51 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package service implements domain business services and orchestration for the auth plugin.
+package service
+
+import (
+	"Wavelet/plugins/domain/auth/dao"
+	"Wavelet/plugins/domain/auth/pow"
+	"time"
+)
+
+// Service aggregates all domain services for the auth plugin.
+type Service struct {
+	DAO               *dao.DAO
+	Session           *SessionService
+	OAuth             *OAuthService
+	OIDCProviderCache *OIDCProviderCache
+	CapSettings       *CapSettingsManager
+	CapManager        *CaptchaManager
+	AuthSvc           *AuthServiceImpl
+	AuthRegistry      *AuthRegistryImpl
+}
+
+// New creates a new Service container with all domain services wired up.
+func New(d *dao.DAO, sessionCfg SessionConfig, capSecret []byte) *Service {
+	sessionSvc := NewSessionService(sessionCfg, d)
+	oidcCache := NewOIDCProviderCache()
+	oauthSvc := NewOAuthService(d, oidcCache, sessionSvc)
+	capSettings := NewCapSettingsManager(d)
+
+	var capStore pow.Store
+	if len(capSecret) > 0 {
+		capStore = pow.NewMemoryStore(1 * time.Minute)
+	}
+	capMgr := NewCaptchaManager(capSecret, capStore, capSettings)
+
+	authSvc := NewAuthService(d, nil, nil, nil, nil)
+	authRegistry := NewAuthRegistry()
+
+	return &Service{
+		DAO:               d,
+		Session:           sessionSvc,
+		OAuth:             oauthSvc,
+		OIDCProviderCache: oidcCache,
+		CapSettings:       capSettings,
+		CapManager:        capMgr,
+		AuthSvc:           authSvc,
+		AuthRegistry:      authRegistry,
+	}
+}