refactor: split backend into standalone server project

Remove embedded frontend and workflow editor assets, add standalone API deployment configuration, and retain the current backend service updates.

internal/bootstrap/server.go

@@ -16,7 +16,6 @@ import (
 	"agent-desk/internal/pkg/i18nx"
 	"agent-desk/internal/pkg/tracex"
 	"agent-desk/internal/services"
-	webspa "agent-desk/web"
 
 	"github.com/gin-gonic/gin"
 	"github.com/mlogclub/simple/web"
@@ -46,19 +45,14 @@ func NewServer() (*gin.Engine, error) {
 		notFoundPrefixes = append(notFoundPrefixes, baseURL+"/")
 	}
 	app.StaticFS(cfg.Storage.Local.BaseURL, ginx.StaticFiles(cfg.Storage.Local.Root))
-	ginx.HandleSPA(app, ginx.SPAOptions{
-		Root:         "./web/out",
-		EmbeddedFS:   webspa.SPA,
-		EmbeddedRoot: "out",
-		DirOptions: ginx.DirOptions{
-			ShowList:  false,
-			SPA:       true,
-			IndexName: "index.html",
-		},
-		NotFoundPrefixes: notFoundPrefixes,
-		NotFoundHandler: func(ctx *gin.Context) {
-			httpx.WriteHttpStatusJSON(ctx, http.StatusNotFound, web.JsonErrorCode(http.StatusNotFound, i18nx.T(ctx, "error.notFound")))
-		},
+	app.NoRoute(func(ctx *gin.Context) {
+		for _, prefix := range notFoundPrefixes {
+			if strings.HasPrefix(ctx.Request.URL.Path, prefix) {
+				httpx.WriteHttpStatusJSON(ctx, http.StatusNotFound, web.JsonErrorCode(http.StatusNotFound, i18nx.T(ctx, "error.notFound")))
+				return
+			}
+		}
+		httpx.WriteHttpStatusJSON(ctx, http.StatusNotFound, web.JsonErrorCode(http.StatusNotFound, i18nx.T(ctx, "error.notFound")))
 	})
 
 	return app, nil