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/internal/handler/v1_routes.go

@@ -0,0 +1,35 @@
+// Code scaffolded by goctl. Safe to edit.
+// goctl 1.10.1
+
+package handler
+
+import (
+	"net/http"
+
+	"img_infinite_canvas/internal/svc"
+
+	"github.com/zeromicro/go-zero/rest"
+)
+
+func RegisterV1Handlers(server *rest.Server, serverCtx *svc.ServiceContext) {
+	server.AddRoutes(
+		[]rest.Route{
+			{
+				Method:  http.MethodPost,
+				Path:    "/context/vision/recognize_object",
+				Handler: recognizeObjectHandler(serverCtx),
+			},
+			{
+				Method:  http.MethodGet,
+				Path:    "/generator/tasks",
+				Handler: getGeneratorTaskHandler(serverCtx),
+			},
+			{
+				Method:  http.MethodPost,
+				Path:    "/generator/tasks",
+				Handler: submitGeneratorTaskHandler(serverCtx),
+			},
+		},
+		rest.WithPrefix("/v1"),
+	)
+}