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/domain/design/agent.go

@@ -0,0 +1,284 @@
+package design
+
+import "context"
+
+type AgentRequest struct {
+	Project    Project
+	Prompt     string
+	Mode       string
+	ImageModel string
+	ImageSize  string
+	Messages   []AgentChatMessage
+	Memory     AgentMemory
+	TaskPlan   AgentTaskPlan
+}
+
+type AgentContent struct {
+	Type        string
+	Text        string
+	TextSource  string
+	ImageURL    string
+	ImageWidth  int64
+	ImageHeight int64
+}
+
+type AgentChatMessage struct {
+	Role     string
+	Contents []AgentContent
+}
+
+type AgentToolConfig struct {
+	PreferToolCategories map[string][]string
+}
+
+type AgentChatRequest struct {
+	Messages              []AgentChatMessage
+	ToolConfig            AgentToolConfig
+	ThreadID              string
+	ThreadIDType          int64
+	EnableMultimodalInput int64
+	EnableWebSearch       bool
+	ImageModel            string
+	ImageSize             string
+	Mode                  string
+}
+
+type AgentThread struct {
+	ThreadID     string
+	Status       string
+	ThreadIDType int64
+	Project      Project
+}
+
+type AgentThreadSummary struct {
+	AgentThreadID   string
+	CoverImageURL   string
+	Text            string
+	ThreadIDType    int64
+	UpdateTimestamp int64
+}
+
+type GeneratorTaskInputArgs struct {
+	AspectRatio string
+	Image       []string
+	ImageURL    string
+	Prompt      string
+	Resolution  string
+	SrcBox      *NormalizedBox
+	DstBox      *NormalizedBox
+}
+
+type GeneratorTaskSubmitRequest struct {
+	CID           string
+	ProjectID     string
+	GeneratorName string
+	InputArgs     GeneratorTaskInputArgs
+}
+
+type GeneratorTaskPriceDetail struct {
+	BasePrice           int64
+	ExtInfoForUnitCount string
+	GeneratorName       string
+	InputArgs           GeneratorTaskInputArgs
+	OutputArgs          string
+	SearchKey           string
+	TimeVariantPeriod   string
+	TotalPrice          int64
+	UnitCount           int64
+	UnitName            string
+	UnitPrice           int64
+}
+
+type GeneratorTaskDisableUnlimitedPrice struct {
+	Balance          int64
+	Price            int64
+	PriceDetail      GeneratorTaskPriceDetail
+	DisableUnlimited bool
+}
+
+type GeneratorTaskQueueInfo struct {
+	InQueue               bool
+	Position              int64
+	TotalQueueCount       int64
+	EstimatedEndTime      string
+	RemainingTimeSeconds  int64
+	DisableUnlimitedPrice GeneratorTaskDisableUnlimitedPrice
+}
+
+type GeneratorTaskArtifactMetadata struct {
+	ArtifactID string
+	Format     string
+	Height     int64
+	Label      string
+	NodeID     string
+	NodeName   string
+	SizeBytes  int64
+	Width      int64
+}
+
+type GeneratorTaskArtifact struct {
+	Type     string
+	Content  string
+	Metadata GeneratorTaskArtifactMetadata
+}
+
+type GeneratorTask struct {
+	GeneratorTaskID   string
+	GeneratorName     string
+	Status            string
+	OriginalInputArgs GeneratorTaskInputArgs
+	QueueInfo         GeneratorTaskQueueInfo
+	Artifacts         []GeneratorTaskArtifact
+	Project           Project
+}
+
+type ImageVectorizationRequest struct {
+	ImageDataURL string
+	Prompt       string
+	Title        string
+	Width        int64
+	Height       int64
+}
+
+type ImageVectorization struct {
+	SVG    string
+	Width  int64
+	Height int64
+}
+
+type ImageVectorizer interface {
+	VectorizeImage(ctx context.Context, req ImageVectorizationRequest) (ImageVectorization, error)
+}
+
+type AgentPlan struct {
+	Message        Message
+	GeneratedNodes []Node
+	Connections    []Connection
+}
+
+type AgentImageGenerationResult struct {
+	Index int
+	Node  Node
+}
+
+type AgentTaskPlanRequest struct {
+	Project          Project
+	Prompt           string
+	Mode             string
+	Messages         []AgentChatMessage
+	Memory           AgentMemory
+	WebSearchEnabled bool
+}
+
+type AgentImageTask struct {
+	Title string `json:"title"`
+	Brief string `json:"brief"`
+}
+
+type AgentTaskPlan struct {
+	Intent             string
+	Reason             string
+	UserFacingResponse string
+	ShouldSearch       bool
+	SearchQuery        string
+	SearchReason       string
+	ImageCount         int
+	ImageTasks         []AgentImageTask
+}
+
+type AgentDecisionRequest struct {
+	Project  Project
+	Prompt   string
+	Mode     string
+	Messages []AgentChatMessage
+	Memory   AgentMemory
+}
+
+type AgentDecision struct {
+	Intent string
+	Reason string
+}
+
+type AgentConversationRequest struct {
+	Project  Project
+	Prompt   string
+	Mode     string
+	Messages []AgentChatMessage
+	Memory   AgentMemory
+	TaskPlan AgentTaskPlan
+}
+
+type AgentImageSummaryRequest struct {
+	Project  Project
+	Prompt   string
+	Mode     string
+	ImageURL string
+	Memory   AgentMemory
+}
+
+type AgentImagePromptRequest struct {
+	Project  Project
+	Prompt   string
+	Mode     string
+	Messages []AgentChatMessage
+	Memory   AgentMemory
+	TaskPlan AgentTaskPlan
+}
+
+type AgentImagePrompt struct {
+	Prompt string
+	Title  string
+}
+
+type AgentResearchDecisionRequest struct {
+	Project  Project
+	Prompt   string
+	Mode     string
+	Messages []AgentChatMessage
+	Memory   AgentMemory
+}
+
+type AgentResearchDecision struct {
+	ShouldSearch bool
+	Query        string
+	Reason       string
+}
+
+type CreativeAgent interface {
+	Decide(ctx context.Context, req AgentDecisionRequest) (AgentDecision, error)
+	Respond(ctx context.Context, req AgentConversationRequest) (string, error)
+	SummarizeImage(ctx context.Context, req AgentImageSummaryRequest) (string, error)
+	BuildImagePrompt(ctx context.Context, req AgentImagePromptRequest) (AgentImagePrompt, error)
+}
+
+type ResearchDecider interface {
+	DecideResearch(ctx context.Context, req AgentResearchDecisionRequest) (AgentResearchDecision, error)
+}
+
+type AgentTaskPlanner interface {
+	PlanAgentTask(ctx context.Context, req AgentTaskPlanRequest) (AgentTaskPlan, error)
+}
+
+type AgentPlanningNarrator interface {
+	StreamPlanNarration(ctx context.Context, req AgentTaskPlanRequest, onDelta func(delta string) error) (string, error)
+}
+
+type StreamingCreativeAgent interface {
+	CreativeAgent
+	StreamRespond(ctx context.Context, req AgentConversationRequest, onDelta func(delta string) error) (string, error)
+}
+
+type AgentReplay struct {
+	ProjectID string
+	Messages  []Message
+}
+
+type AgentRunner interface {
+	Plan(ctx context.Context, req AgentRequest) (AgentPlan, error)
+	Replay(ctx context.Context, project Project) (AgentReplay, error)
+}
+
+type IncrementalAgentRunner interface {
+	AgentRunner
+	PlanIncremental(ctx context.Context, req AgentRequest, onResult func(AgentImageGenerationResult) error) (AgentPlan, error)
+}