Add unit tests for player configurations and referral system

- Implement tests for player configuration creation, update, and deletion, ensuring proper handling of free and paid user scenarios.
- Add tests for referral registration, including valid and invalid referrer cases.
- Create tests for referral reward flow, verifying correct reward distribution and eligibility.
- Establish a test database setup with necessary schema for user, plan, payment, and notification models.
- Introduce helper functions for seeding test data and loading entities from the database.

internal/video/runtime/domain/job.go

@@ -1,7 +1,5 @@
 package domain
 
-import "time"
-
 type JobStatus string
 
 const (
@@ -11,28 +9,3 @@ const (
 	JobStatusFailure   JobStatus = "failure"
 	JobStatusCancelled JobStatus = "cancelled"
 )
-
-type Job struct {
-	ID            string    `json:"id" gorm:"primaryKey;type:uuid;default:gen_random_uuid()"`
-	Status        JobStatus `json:"status" gorm:"type:varchar(32);index"`
-	Priority      int       `json:"priority" gorm:"default:0;index"`
-	UserID        string    `json:"user_id" gorm:"index"`
-	VideoID       string    `json:"video_id,omitempty"`
-	Name          string    `json:"name"`
-	TimeLimit     int64     `json:"time_limit"`
-	InputURL      string    `json:"input_url"`
-	OutputURL     string    `json:"output_url"`
-	TotalDuration int64     `json:"total_duration"`
-	CurrentTime   int64     `json:"current_time"`
-	Progress      float64   `json:"progress"`
-	AgentID       *string   `json:"agent_id" gorm:"type:uuid;index"`
-	Logs          string    `json:"logs" gorm:"type:text"`
-	Config        string    `json:"config" gorm:"type:text"`
-	Cancelled     bool      `json:"cancelled" gorm:"default:false"`
-	RetryCount    int       `json:"retry_count" gorm:"default:0"`
-	MaxRetries    int       `json:"max_retries" gorm:"default:3"`
-	CreatedAt     time.Time `json:"created_at"`
-	UpdatedAt     time.Time `json:"updated_at"`
-}
-
-func (Job) TableName() string { return "render_jobs" }