feat(migrations): Harden task audit tracking and optimize article templates

- Added migration to harden task audit tracking by modifying audit_logs and related tables.
- Introduced operator_id to several tables for better tracking of actions.
- Updated article_templates with new prompt templates for various article types, enhancing content generation.
- Created prompt_rules and schedule_tasks tables to manage content generation rules and scheduling.
- Added foreign key constraints to articles for better data integrity.

server/internal/tenant/domain/prompt_rule.go

@@ -0,0 +1,26 @@
+package domain
+
+import "time"
+
+type PromptRuleGroup struct {
+	ID        int64
+	TenantID  int64
+	Name      string
+	SortOrder int
+	CreatedAt time.Time
+	UpdatedAt time.Time
+}
+
+type PromptRule struct {
+	ID               int64
+	TenantID         int64
+	GroupID          *int64
+	Name             string
+	PromptContent    string
+	Scene            *string
+	DefaultTone      *string
+	DefaultWordCount *int
+	Status           string
+	CreatedAt        time.Time
+	UpdatedAt        time.Time
+}

server/internal/tenant/domain/schedule_task.go

@@ -0,0 +1,19 @@
+package domain
+
+import "time"
+
+type ScheduleTask struct {
+	ID             int64
+	TenantID       int64
+	PromptRuleID   int64
+	BrandID        *int64
+	Name           string
+	CronExpr       string
+	TargetPlatform *string
+	StartAt        *time.Time
+	EndAt          *time.Time
+	NextRunAt      *time.Time
+	Status         string
+	CreatedAt      time.Time
+	UpdatedAt      time.Time
+}