feat: start implement mvp

src/lib/types/errors.ts

@@ -0,0 +1,37 @@
+export class AppError extends Error {
+  constructor(
+    message: string,
+    public code: string,
+    public recoverable: boolean = true,
+    public details?: unknown,
+  ) {
+    super(message);
+    this.name = "AppError";
+  }
+}
+
+export class ImageError extends AppError {
+  constructor(message: string, recoverable: boolean = true) {
+    super(message, "IMAGE_ERROR", recoverable);
+  }
+}
+
+export class TextError extends AppError {
+  constructor(message: string, recoverable: boolean = true) {
+    super(message, "TEXT_ERROR", recoverable);
+  }
+}
+
+export class CanvasError extends AppError {
+  constructor(message: string, recoverable: boolean = true) {
+    super(message, "CANVAS_ERROR", recoverable);
+  }
+}
+
+export class StorageError extends AppError {
+  constructor(message: string, recoverable: boolean = true) {
+    super(message, "STORAGE_ERROR", recoverable);
+  }
+}
+
+export type ErrorType = AppError | ImageError | TextError | CanvasError | StorageError;

src/lib/types/panel.ts

@@ -0,0 +1,45 @@
+export interface TextItem {
+  id: string;
+  text: string;
+  fontSize: number;
+  fontFamily: string;
+  color: string;
+  x: number;
+  y: number;
+}
+
+export interface Panel {
+  id: string;
+  backgroundImage: string;
+  texts: TextItem[];
+  height: number;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export interface ImageUploadResult {
+  success: boolean;
+  image?: string;
+  error?: string;
+}
+
+export interface CropOptions {
+  width: number;
+  height: number;
+  x?: number;
+  y?: number;
+}
+
+export interface ImageCropResult {
+  success: boolean;
+  croppedImage?: string;
+  error?: string;
+}
+
+export interface UIState {
+  isLoading: boolean;
+  error: string | null;
+  currentStep: "upload" | "crop" | "text" | "preview";
+  showCropModal: boolean;
+  showTextManager: boolean;
+}