Initial commit: img-infinite-canvas AI design workbench MVP

Moteva-style AI design workbench replica. Home prompt creates a project;
the project page provides an infinite canvas with node drag, zoom/pan,
a design chat panel, history replay, image asset upload, and project
save/regenerate.

- Backend: go-zero, DDD layering, sqlc/pgx, optional PostgreSQL; memory
  or Redis cache; asynq job queue; MinIO/S3/R2/OSS object storage;
  sky-valley/pi agent runtime adapter.
- Frontend: Next.js App Router + Vite artifact build, TypeScript, i18n,
  shadcn/ui components, auth (OTP/Turnstile/Google/WeChat).
- Deploy: Docker Compose and k3s manifests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

server/img_infinite_canvas.go

@@ -0,0 +1,82 @@
+// Code scaffolded by goctl. Safe to edit.
+// goctl 1.10.1
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"strings"
+
+	"img_infinite_canvas/internal/config"
+	"img_infinite_canvas/internal/errorx"
+	"img_infinite_canvas/internal/handler"
+	"img_infinite_canvas/internal/svc"
+
+	"github.com/zeromicro/go-zero/core/conf"
+	"github.com/zeromicro/go-zero/core/logx"
+	"github.com/zeromicro/go-zero/rest"
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+var (
+	configFile = flag.String("f", "etc/config.yaml", "the config file")
+	runMode    = flag.String("mode", "all", "process mode: api, worker, or all")
+)
+
+func main() {
+	flag.Parse()
+
+	var c config.Config
+	conf.MustLoad(*configFile, &c)
+	httpx.SetErrorHandlerCtx(errorx.Handle)
+
+	ctx := svc.NewServiceContext(c)
+	defer ctx.Close()
+
+	mode := normalizeRunMode(*runMode)
+	if mode == "worker" {
+		if !ctx.HasJobWorker() {
+			logx.Must(fmt.Errorf("job worker is disabled by JobQueue.Driver"))
+		}
+		fmt.Println("Starting job worker...")
+		if err := ctx.RunJobWorker(); err != nil {
+			logx.Must(err)
+		}
+		return
+	}
+
+	if mode == "all" {
+		if err := ctx.StartJobWorker(); err != nil {
+			logx.Must(err)
+		}
+		defer ctx.ShutdownJobWorker()
+	}
+	if err := ctx.StartOutboxPublisher(); err != nil {
+		logx.Must(err)
+	}
+	defer ctx.ShutdownOutboxPublisher()
+
+	server := rest.MustNewServer(c.RestConf)
+	defer server.Stop()
+	server.Use(handler.UserContextMiddleware(ctx.AuthService))
+	handler.RegisterHandlers(server, ctx)
+	handler.RegisterV1Handlers(server, ctx)
+
+	fmt.Printf("Starting server at %s:%d...\n", c.Host, c.Port)
+	server.Start()
+}
+
+func normalizeRunMode(mode string) string {
+	switch strings.ToLower(strings.TrimSpace(mode)) {
+	case "", "all":
+		return "all"
+	case "api":
+		return "api"
+	case "worker":
+		return "worker"
+	default:
+		logx.Must(fmt.Errorf("unsupported process mode %q", mode))
+		return "all"
+	}
+}