feat: 实现纹理图集生成功能

添加纹理图集生成工具，支持多图片合并为单个图集并生成坐标数据文件

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/types/index.ts

@@ -59,7 +59,7 @@ export interface ProcessingProgress {
  * Tool types
  */
 
-export type ToolType = "video-frames" | "image-compress" | "audio-compress" | "ai-image" | "ai-audio";
+export type ToolType = "video-frames" | "image-compress" | "audio-compress" | "texture-atlas" | "ai-image" | "ai-audio";
 
 export interface ToolConfig {
   type: ToolType;
@@ -129,7 +129,7 @@ export interface VideoFramesConfig {
 
 export interface ImageCompressConfig {
   quality: number;
-  format: "original" | "jpeg" | "png" | "webp";
+  format: "original" | "auto" | "jpeg" | "png" | "webp" | "avif";
   resize?: {
     width?: number;
     height?: number;
@@ -143,3 +143,52 @@ export interface AudioCompressConfig {
   sampleRate: number;
   channels: number;
 }
+
+/**
+ * Texture Atlas types
+ */
+
+export interface TextureAtlasConfig {
+  maxWidth: number;
+  maxHeight: number;
+  padding: number;
+  allowRotation: boolean;
+  pot: boolean; // Power of Two
+  format: "png" | "webp";
+  quality: number;
+  outputFormat: "cocos2d" | "cocos-creator" | "generic-json";
+  algorithm: "MaxRects" | "Shelf";
+}
+
+export interface AtlasSprite {
+  id: string;
+  name: string;
+  width: number;
+  height: number;
+  buffer: Buffer;
+}
+
+export interface AtlasRect {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  rotated?: boolean;
+}
+
+export interface AtlasFrame {
+  filename: string;
+  frame: AtlasRect;
+  rotated: boolean;
+  trimmed: boolean;
+  spriteSourceSize: { x: number; y: number; w: number; h: number };
+  sourceSize: { w: number; h: number };
+}
+
+export interface TextureAtlasResult {
+  width: number;
+  height: number;
+  image: Buffer;
+  frames: AtlasFrame[];
+  format: string;
+}