feat: Enhance AI Agent and Channel Management

- Updated labels in the AI Agents dashboard for clarity, changing "流程状态" to "Playbook 状态" and "未发布流程" to "未发布 Playbook".
- Introduced AI Agent rollout percentage management in channel editing, allowing users to set and rollback rollout percentages.
- Added new API endpoints for rolling back AI Agent rollout and fetching agent run metrics.
- Implemented new UI components for displaying agent run details, including status, duration, and input/output tokens.
- Enhanced type definitions for AdminChannel and AIAgent to include rollout percentages and runtime modes.
- Updated navigation to include a section for agent runs.
- Added new translations for agent run features in both English and Chinese.

internal/repositories/agent_step_repository.go

@@ -0,0 +1,54 @@
+package repositories
+
+import (
+	"agent-desk/internal/models"
+
+	"github.com/mlogclub/simple/sqls"
+	"gorm.io/gorm"
+)
+
+var AgentStepRepository = newAgentStepRepository()
+
+func newAgentStepRepository() *agentStepRepository {
+	return &agentStepRepository{}
+}
+
+type agentStepRepository struct{}
+
+func (r *agentStepRepository) Create(db *gorm.DB, item *models.AgentStep) error {
+	return db.Create(item).Error
+}
+
+func (r *agentStepRepository) FindByAgentRunID(db *gorm.DB, agentRunID int64) []models.AgentStep {
+	if agentRunID <= 0 {
+		return []models.AgentStep{}
+	}
+	return r.Find(db, sqls.NewCnd().Eq("agent_run_id", agentRunID).Asc("id"))
+}
+
+func (r *agentStepRepository) LastByAgentRunID(db *gorm.DB, agentRunID int64) *models.AgentStep {
+	if agentRunID <= 0 {
+		return nil
+	}
+	ret := &models.AgentStep{}
+	if err := db.Where("agent_run_id = ?", agentRunID).Order("id DESC").First(ret).Error; err != nil {
+		return nil
+	}
+	return ret
+}
+
+func (r *agentStepRepository) FindByAgentRunIDs(db *gorm.DB, agentRunIDs []int64) []models.AgentStep {
+	if len(agentRunIDs) == 0 {
+		return nil
+	}
+	var items []models.AgentStep
+	if err := db.Where("agent_run_id IN ?", agentRunIDs).Find(&items).Error; err != nil {
+		return nil
+	}
+	return items
+}
+
+func (r *agentStepRepository) Find(db *gorm.DB, cnd *sqls.Cnd) (list []models.AgentStep) {
+	cnd.Find(db, &list)
+	return
+}