Temporarily disable pattern import

app/page.tsx

@@ -50,6 +50,8 @@ type CropSelectionDrag = {
 };
 
 const FULL_CROP: CropRect = { x: 0, y: 0, width: 1, height: 1 };
+// 现成图纸识别准确率仍需继续优化，暂时保留实现但关闭用户入口。
+const ENABLE_PATTERN_IMPORT = false;
 
 function logUsage(event: Record<string, unknown>) {
   void fetch("/api/usage", {
@@ -1924,8 +1926,10 @@ export default function Home() {
 
           <button className="crop-select-button" onClick={openCropDialog}>选择取景区域</button>
           <button className="reset-crop" onClick={() => { setCropRect(FULL_CROP); setDraftCropRect(FULL_CROP); setStatus("已恢复使用整张图片"); }}>使用整张图片</button>
-          <button className="pattern-import-button" onClick={() => patternImportInputRef.current?.click()}>导入现成图纸</button>
-          <input ref={patternImportInputRef} className="file-input pattern-import-file" type="file" accept="image/png,image/jpeg,image/webp" onChange={handlePatternImportUpload} />
+          {ENABLE_PATTERN_IMPORT && <>
+            <button className="pattern-import-button" onClick={() => patternImportInputRef.current?.click()}>导入现成图纸</button>
+            <input ref={patternImportInputRef} className="file-input pattern-import-file" type="file" accept="image/png,image/jpeg,image/webp" onChange={handlePatternImportUpload} />
+          </>}
 
           <div className="field-row">
             <label><span>横向格数</span><input type="number" min="8" max="256" value={requestedWidth} onChange={(e) => setRequestedWidth(Number(e.target.value))} /></label>
@@ -1937,7 +1941,7 @@ export default function Home() {
           <label className="field"><span>取色策略</span><select value={samplingStrategy} onChange={(e) => setSamplingStrategy(e.target.value as SamplingStrategy)}><option value="dominant">区域主色（减少杂色）</option><option value="smooth">平滑取色（细节丰富）</option></select></label>
           <label className="field"><span>图片适应方式</span><select value={fitMode} onChange={(e) => setFitMode(e.target.value as "cover" | "contain")}><option value="contain">完整显示</option><option value="cover">裁剪铺满</option></select></label>
           <button className="primary-button" onClick={() => convertImage()}>重新转换</button>
-          <p className="privacy-note">原图与现成图纸都只在当前浏览器中处理，不会上传到服务器。</p>
+          <p className="privacy-note">图片只在当前浏览器中处理，不会上传到服务器。</p>
         </aside>
 
         <section className="pattern-panel" id="pattern-preview">