refactor: rebrand from cs-agent to BossChat

- Rename Go module: cs-agent → bosschat
- Rename all import paths across 200+ Go files
- Rename SDK: cs-ai-agent-sdk → bosschat-sdk
- Rename message protocol: cs-agent:* → bosschat:*
- Rename JS globals: CSAgentConfig → BossChatConfig
- Rename CSS classes: cs-agent-* → bosschat-*
- Update Makefile APP_NAME and ARCHIVE_NAME
- Update logo assets
- Fix display name: BoosChat → BossChat

internal/ai/mcps/providers/system_tools_provider.go

@@ -2,7 +2,7 @@ package providers
 
 import (
 	"context"
-	"cs-agent/internal/pkg/config"
+	"bosschat/internal/pkg/config"
 	"time"
 
 	"github.com/modelcontextprotocol/go-sdk/mcp"
@@ -46,12 +46,12 @@ func (p *systemToolProvider) Register(server *mcp.Server) error {
 		server,
 		&mcp.Tool{
 			Name:        "service_info",
-			Description: "查看当前 cs-agent 服务的基础运行信息。",
+			Description: "查看当前 bosschat 服务的基础运行信息。",
 		},
 		func(ctx context.Context, req *mcp.CallToolRequest, _ struct{}) (*mcp.CallToolResult, map[string]any, error) {
 			cfg := config.Current()
 			return nil, map[string]any{
-				"name":        "cs-agent",
+				"name": "bosschat",
 				"version":     "v1",
 				"mcpPath":     "/api/mcp",
 				"port":        cfg.Server.Port,