feat: implement skill middleware and enhance tool handling for selected skills

internal/ai/runtime/internal/impl/callbacks/agent_trace_handler.go

@@ -93,6 +93,14 @@ func (h *RuntimeTraceHandler) resolveToolMetadata(modelToolName string) (ToolMet
 			SourceType: toolx.BuiltinToolCatalogServerCode,
 		}, true
 	}
+	if modelToolName == toolx.BuiltinSkillToolName {
+		return ToolMetadata{
+			ToolCode:   toolx.BuiltinSkillToolCode,
+			ServerCode: toolx.BuiltinToolCatalogServerCode,
+			ToolName:   toolx.BuiltinSkillToolName,
+			SourceType: toolx.BuiltinToolCatalogServerCode,
+		}, true
+	}
 	metadata, ok := h.toolMetadataBy[modelToolName]
 	return metadata, ok
 }

internal/ai/runtime/internal/impl/callbacks/runlog_callback.go

@@ -55,6 +55,16 @@ func (c *RuntimeTraceCollector) SetInstructionSummary(summary InstructionTraceSu
 	c.Data.Instruction.HasToolRule = summary.HasToolRule
 }
 
+func (c *RuntimeTraceCollector) SetSkillMiddleware(enabled bool, toolName string) {
+	if c == nil {
+		return
+	}
+	c.mu.Lock()
+	defer c.mu.Unlock()
+	c.Data.Skill.MiddlewareEnabled = enabled
+	c.Data.Skill.MiddlewareToolName = toolName
+}
+
 func (c *RuntimeTraceCollector) AddToolItem(item ToolTraceItem) {
 	if c == nil {
 		return

internal/ai/runtime/internal/impl/callbacks/trace_callback.go

@@ -107,11 +107,13 @@ type RuntimeTraceData struct {
 }
 
 type SkillTraceData struct {
-	Code             string   `json:"code,omitempty"`
-	Name             string   `json:"name,omitempty"`
-	RouteReason      string   `json:"routeReason,omitempty"`
-	RouteTrace       string   `json:"routeTrace,omitempty"`
-	AllowedToolCodes []string `json:"allowedToolCodes,omitempty"`
+	Code               string   `json:"code,omitempty"`
+	Name               string   `json:"name,omitempty"`
+	RouteReason        string   `json:"routeReason,omitempty"`
+	RouteTrace         string   `json:"routeTrace,omitempty"`
+	AllowedToolCodes   []string `json:"allowedToolCodes,omitempty"`
+	MiddlewareEnabled  bool     `json:"middlewareEnabled,omitempty"`
+	MiddlewareToolName string   `json:"middlewareToolName,omitempty"`
 }
 
 type InterruptTraceContext struct {