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/pkg/toolx/builtin_tools.go

@@ -3,8 +3,8 @@ package toolx
 import (
 	"strings"
 
-	"cs-agent/internal/pkg/enums"
-	"cs-agent/internal/pkg/i18nx"
+	"cs-ai-agent/internal/pkg/enums"
+	"cs-ai-agent/internal/pkg/i18nx"
 )
 
 type ToolSpec struct {

internal/pkg/toolx/builtin_tools_test.go

@@ -3,7 +3,7 @@ package toolx
 import (
 	"testing"
 
-	"cs-agent/internal/pkg/i18nx"
+	"cs-ai-agent/internal/pkg/i18nx"
 )
 
 func TestResolveToolMetadata(t *testing.T) {

internal/pkg/toolx/mcp_tool.go

@@ -4,8 +4,8 @@ import (
 	"encoding/json"
 	"strings"
 
-	"cs-agent/internal/pkg/dto/request"
-	"cs-agent/internal/pkg/errorsx"
+	"cs-ai-agent/internal/pkg/dto/request"
+	"cs-ai-agent/internal/pkg/errorsx"
 )
 
 func BuildMCPToolCode(serverCode, toolName string) string {