feat: Add support for Vision and Search in Assistant API

- Introduced Vision and Search capabilities in the Assistant API, enhancing its functionality.
- Updated the Context struct to include Vision and Search fields for better context management.
- Added a new Search type to facilitate search engine integration.
- Adjusted the execute method to handle the new features appropriately.

neo/assistant/api.go

@@ -87,9 +87,10 @@ func (ast *Assistant) execute(c *gin.Context, ctx chatctx.Context, userInput int
 	}
 	options := ast.withOptions(userOptions)
 
-	// Add RAG and Version support
+	// Add RAG、Vision and Search support
 	ctx.RAG = rag != nil
-	ctx.Version = ast.vision
+	ctx.Vision = ast.vision
+	ctx.Search = ast.search && search != nil
 
 	// Run init hook
 	res, err := ast.HookCreate(c, ctx, input, options, contents)

neo/assistant/load.go

@@ -25,6 +25,7 @@ import (
 var loaded = NewCache(200) // 200 is the default capacity
 var storage store.Store = nil
 var rag *RAG = nil
+var search *Search = nil
 var connectorSettings map[string]ConnectorSetting = map[string]ConnectorSetting{}
 var vision *neovision.Vision = nil
 var defaultConnector string = "" // default connector

neo/assistant/types.go

@@ -84,6 +84,12 @@ type RAG struct {
 	Setting    RAGSetting
 }
 
+// Search the search interface
+// @todo: add search engine
+type Search struct {
+	Engine interface{}
+}
+
 // RAGSetting the RAG setting
 type RAGSetting struct {
 	IndexPrefix string `json:"index_prefix" yaml:"index_prefix"`
@@ -129,6 +135,7 @@ type Assistant struct {
 	UpdatedAt   int64                    `json:"updated_at"`            // Last update timestamp
 	openai      *api.OpenAI              // OpenAI API
 	vision      bool                     // Whether this assistant supports vision
+	search      bool                     // Whether this assistant supports search
 	toolCalls   bool                     // Whether this assistant supports tool_calls
 	initHook    bool                     // Whether this assistant has an init hook
 }

neo/context/context.go

@@ -28,10 +28,11 @@ type Context struct {
 	Retry          bool                   `json:"retry,omitempty"`           // Retry mode
 	RetryTimes     uint8                  `json:"retry_times,omitempty"`     // Retry times
 	Upload         *FileUpload            `json:"upload,omitempty"`
-	Version        bool                   `json:"version,omitempty"` // Version support
+	Vision         bool                   `json:"vision,omitempty"` // Vision support
-	RAG            bool                   `json:"rag,omitempty"`     // RAG support
+	Search         bool                   `json:"search,omitempty"` // Search support
-	Args           []interface{}          `json:"args,omitempty"`    // Arguments for call
+	RAG            bool                   `json:"rag,omitempty"`    // RAG support
-	SharedSpace    plan.Space             `json:"-"`                 // Shared space
+	Args           []interface{}          `json:"args,omitempty"`   // Arguments for call
+	SharedSpace    plan.Space             `json:"-"`                // Shared space
 }
 
 // Field the context field
@@ -181,9 +182,10 @@ func (ctx *Context) Release() {
 // Map the context to a map
 func (ctx *Context) Map() map[string]interface{} {
 	data := map[string]interface{}{
-		"sid":     ctx.Sid,
+		"sid":    ctx.Sid,
-		"rag":     ctx.RAG,
+		"rag":    ctx.RAG,
-		"version": ctx.Version,
+		"vision": ctx.Vision,
+		"search": ctx.Search,
 	}
 
 	if ctx.ChatID != "" {