feat: remove fallback mode and max AI reply rounds from AIAgent model and related components

internal/pkg/dto/request/ai_request.go

@@ -52,8 +52,6 @@ type CreateAIAgentRequest struct {
 	ReplyTimeoutSeconds int                             `json:"replyTimeoutSeconds"`
 	TeamIDs             []int64                         `json:"teamIds"`
 	HandoffMode         enums.AIAgentHandoffMode        `json:"handoffMode"`
-	MaxAIReplyRounds    int                             `json:"maxAiReplyRounds"`
-	FallbackMode        enums.AIAgentFallbackMode       `json:"fallbackMode"`
 	FallbackMessage     string                          `json:"fallbackMessage"`
 	KnowledgeIDs        []int64                         `json:"knowledgeIds"`
 	SkillIDs            []int64                         `json:"skillIds"`

internal/pkg/dto/response/ai_response.go

@@ -83,9 +83,6 @@ type AIAgentResponse struct {
 	Teams               []AIAgentTeamResponse           `json:"teams"`
 	HandoffMode         enums.AIAgentHandoffMode        `json:"handoffMode"`
 	HandoffModeName     string                          `json:"handoffModeName"`
-	MaxAIReplyRounds    int                             `json:"maxAiReplyRounds"`
-	FallbackMode        enums.AIAgentFallbackMode       `json:"fallbackMode"`
-	FallbackModeName    string                          `json:"fallbackModeName"`
 	FallbackMessage     string                          `json:"fallbackMessage"`
 	KnowledgeIDs        []int64                         `json:"knowledgeIds"`
 	KnowledgeBaseNames  []string                        `json:"knowledgeBaseNames"`

internal/pkg/enums/im.go

@@ -212,30 +212,6 @@ func GetAIAgentHandoffModeLabel(mode AIAgentHandoffMode) string {
 	return aiAgentHandoffModeLabelMap[mode]
 }
 
-type AIAgentFallbackMode int
-
-const (
-	AIAgentFallbackModeNoAnswer      AIAgentFallbackMode = 1
-	AIAgentFallbackModeGuideRephrase AIAgentFallbackMode = 2
-	AIAgentFallbackModeHandoff       AIAgentFallbackMode = 3
-)
-
-var AIAgentFallbackModeValues = []AIAgentFallbackMode{
-	AIAgentFallbackModeNoAnswer,
-	AIAgentFallbackModeGuideRephrase,
-	AIAgentFallbackModeHandoff,
-}
-
-var aiAgentFallbackModeLabelMap = map[AIAgentFallbackMode]string{
-	AIAgentFallbackModeNoAnswer:      "直接声明无答案",
-	AIAgentFallbackModeGuideRephrase: "引导补充信息或换个问法",
-	AIAgentFallbackModeHandoff:       "直接转人工",
-}
-
-func GetAIAgentFallbackModeLabel(mode AIAgentFallbackMode) string {
-	return aiAgentFallbackModeLabelMap[mode]
-}
-
 const (
 	IMRealtimeEventConnected               = "connected"
 	IMRealtimeEventPong                    = "pong"