refactor: rename agent widget references to AI agent for consistency

- Updated runtime configuration to use __CS_AI_AGENT_WIDGET_CONFIG__ instead of __CS_AGENT_WIDGET_CONFIG__.
- Changed message types in support host bridge from "cs-agent" to "cs-ai-agent".
- Minified SDK script updated to reflect new AI agent naming conventions.
- Adjusted scrollbar styles in main.scss to use .cs-ai-agent-scrollbar instead of .cs-agent-scrollbar.

internal/ai/runtime/graphs/handoff_graph.go

@@ -6,10 +6,10 @@ import (
 	"fmt"
 	"strings"
 
-	"cs-agent/internal/ai/runtime/tooling"
-	"cs-agent/internal/models"
-	"cs-agent/internal/pkg/tracex"
-	"cs-agent/internal/services"
+	"cs-ai-agent/internal/ai/runtime/tooling"
+	"cs-ai-agent/internal/models"
+	"cs-ai-agent/internal/pkg/tracex"
+	"cs-ai-agent/internal/services"
 
 	componenttool "github.com/cloudwego/eino/components/tool"
 	"github.com/cloudwego/eino/schema"
@@ -29,8 +29,8 @@ type handoffGraphArgs struct {
 }
 
 func init() {
-	schema.RegisterName[HandoffGraphState]("cs_agent_handoff_graph_state")
-	schema.RegisterName[HandoffGraphInterruptInfo]("cs_agent_handoff_graph_interrupt_info")
+	schema.RegisterName[HandoffGraphState]("cs_ai_agent_handoff_graph_state")
+	schema.RegisterName[HandoffGraphInterruptInfo]("cs_ai_agent_handoff_graph_interrupt_info")
 }
 
 type HandoffGraph struct {