feat: 新增主动拉取与多类型回调功能

- 新增 ActivePull 实体、DAO、DTO 及 Service，支持主动拉取任务管理
- 新增 ComposeCallback、VideoCallback、HttpNodeCallback 多类型回调接口
- FlowExecution 增加 NodeGroupId 和 TotalTokens 字段，支持节点组追踪与 Token 统计
- ExecutedNodes 结构由字符串列表改为包含执行状态的节点对象列表
- 重构回调通知机制，统一 Notify 函数调用
- 优化输出项类型判断逻辑，新增文件类型标识

go.mod

@@ -9,6 +9,10 @@ require (
 	github.com/gogf/gf/contrib/drivers/pgsql/v2 v2.10.0
 	github.com/gogf/gf/contrib/nosql/redis/v2 v2.10.0
 	github.com/gogf/gf/v2 v2.10.0
+	github.com/google/uuid v1.6.0
+	github.com/stretchr/testify v1.11.1
+	github.com/tidwall/gjson v1.19.0
+	github.com/tidwall/sjson v1.2.5
 	go.opentelemetry.io/otel/trace v1.38.0
 )
 
@@ -28,6 +32,7 @@ require (
 	github.com/clbanning/mxj/v2 v2.7.0 // indirect
 	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/cloudwego/eino-ext/libs/acl/openai v0.1.17 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dgraph-io/badger/v4 v4.2.0 // indirect
 	github.com/dgraph-io/ristretto v0.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
@@ -49,7 +54,6 @@ require (
 	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/golang/snappy v1.0.0 // indirect
 	github.com/google/flatbuffers v1.12.1 // indirect
-	github.com/google/uuid v1.6.0 // indirect
 	github.com/goph/emperror v0.17.2 // indirect
 	github.com/gorilla/websocket v1.5.4-0.20250319132907-e064f32e3674 // indirect
 	github.com/grokify/html-strip-tags-go v0.1.0 // indirect
@@ -83,11 +87,14 @@ require (
 	github.com/olekukonko/tablewriter v1.1.0 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.9 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/r3labs/diff/v2 v2.15.1 // indirect
 	github.com/redis/go-redis/v9 v9.12.1 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/slongfield/pyfmt v0.0.0-20220222012616-ea85ff4c361f // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
 	github.com/tiger1103/gfast-token v1.0.10 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/vcaesar/cedar v0.30.0 // indirect