feat: Implement AI Agent Workflow Binding functionality

- Added aiAgentWorkflowBindingRepository for managing workflow bindings associated with AI agents.
- Enhanced agentRevisionService to include workflow bindings in agent revisions.
- Updated aIAgentService to handle workflow bindings during agent creation and updates.
- Introduced ai_agent_workflow_binding_service for managing workflow binding logic.
- Created new API endpoints for fetching, creating, updating, and deleting AI workflows.
- Developed a new dashboard page for managing AI workflows.
- Updated frontend components to support workflow binding management in agent configuration.
- Added necessary tests for workflow binding functionality and updated existing tests for compatibility.
- Translated relevant UI texts and messages for workflow management.

internal/models/models.go

@@ -65,6 +65,7 @@ var Models = []any{
 	&AgentRunQualityFeedback{},
 	&AIWorkflow{},
 	&AIWorkflowVersion{},
+	&AIAgentWorkflowBinding{},
 	&AIWorkflowRun{},
 	&AIWorkflowNodeRun{},
 	&ConversationInterrupt{},
@@ -664,6 +665,21 @@ type AIWorkflowVersion struct {
 	AuditFields
 }
 
+// AIAgentWorkflowBinding binds an Agent to one immutable, published workflow
+// version. Workflows are maintained independently and can be reused by many
+// Agents; Agent publication snapshots the binding set for reproducible runs.
+type AIAgentWorkflowBinding struct {
+	ID                 int64  `gorm:"primaryKey;autoIncrement"`
+	AIAgentID          int64  `gorm:"type:bigint;not null;index;uniqueIndex:uk_agent_workflow_binding"`
+	WorkflowID         int64  `gorm:"type:bigint;not null;index"`
+	WorkflowVersionID  int64  `gorm:"type:bigint;not null;index;uniqueIndex:uk_agent_workflow_binding"`
+	ToolName           string `gorm:"type:varchar(100);not null;default:''"`
+	TriggerInstruction string `gorm:"type:text"`
+	Priority           int    `gorm:"type:int;not null;default:0;index"`
+	Enabled            bool   `gorm:"not null;default:true;index"`
+	AuditFields
+}
+
 // AIWorkflowRun 表示一次会话 workflow 执行记录。
 type AIWorkflowRun struct {
 	ID                int64      `gorm:"primaryKey;autoIncrement"`