chore(init): 初始化解忧商行项目并完成 Phase 0 基座

backend/internal/integrations/sms/mock.go

@@ -0,0 +1,39 @@
+package sms
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+)
+
+type MockProvider struct {
+	log *zap.Logger
+}
+
+func NewMockProvider(log *zap.Logger) *MockProvider {
+	return &MockProvider{log: log}
+}
+
+func (p *MockProvider) SendLoginCode(ctx context.Context, phone string, code string) error {
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	if p.log != nil {
+		p.log.Info("本地短信验证码", zap.String("phone", maskPhone(phone)), zap.String("code", code))
+	}
+	return nil
+}
+
+func (p *MockProvider) SendTemplate(ctx context.Context, req TemplateRequest) error {
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	if p.log != nil {
+		p.log.Info("本地模板短信（未真实发送）",
+			zap.String("phone", maskPhone(req.Phone)),
+			zap.String("template_code", req.TemplateCode),
+			zap.Any("params", req.Params),
+		)
+	}
+	return nil
+}