feat: make manual-images list dynamic and resolve checkmark encoding issues

backend/pfm-web-app/src/app/api/manual-images/route.ts

@@ -1,38 +1,22 @@
 import { NextResponse } from "next/server";
-
-const testFiles = [
-  "1782870899198-sample_do.jpeg",
-  "1782872141829-rotated_1782872118246_rotated_1782872112296_rotated_1782872107513_CAP3481952560331460805.jpg",
-  "1782875271815-rotated_1782875258464_rotated_1782875254091_rotated_1782875250123_CAP1599226410575173446.jpg",
-  "1782884664859-rotated_1782884661516_rotated_1782884658097_rotated_1782884654697_CAP5956452738616729026.jpg",
-  "1782888127716-CAP6161747431193129837.jpg",
-  "1782888211457-rotated_1782888204591_rotated_1782888199962_rotated_1782888195402_CAP7202641176939787142.jpg",
-  "1782888609885-rotated_1782888593813_1000000454.jpg",
-  "1782890303600-1000000465.jpg",
-  "1782892728794-1000000466.jpg",
-  "1782909791970-sample_do.jpeg",
-  "IMG_20260630_145445.jpg",
-  "IMG_20260701_134446.jpg",
-  "IMG_20260701_134504.jpg",
-  "IMG_20260701_134533.jpg",
-  "IMG_20260701_134555.jpg",
-  "IMG_20260701_134555~2.jpg",
-  "IMG_20260701_134635.jpg",
-  "IMG_20260701_134636.jpg",
-  "IMG_20260701_134646.jpg",
-  "IMG_20260701_134646~2.jpg",
-  "IMG_20260701_134704.jpg",
-  "IMG_20260701_134704~2.jpg",
-  "IMG_20260701_134810.jpg",
-  "IMG_20260701_134817.jpg",
-  "IMG_20260701_135900.jpg",
-  "IMG_20260701_135910.jpg",
-  "IMG_20260701_135923.jpg",
-  "IMG_20260701_135938.jpg",
-  "IMG_20260701_135950.jpg",
-  "IMG_20260701_140005.jpg"
-];
+import fs from "fs";
+import path from "path";
 
 export async function GET() {
-  return NextResponse.json({ files: testFiles });
+  try {
+    const dirPath = path.join(process.cwd(), "public/test-images");
+    if (!fs.existsSync(dirPath)) {
+      return NextResponse.json({ files: [] });
+    }
+    const files = fs.readdirSync(dirPath).filter(file => {
+      const ext = path.extname(file).toLowerCase();
+      return ext === ".jpg" || ext === ".jpeg" || ext === ".png";
+    });
+    // Sort files to keep consistent ordering in UI
+    files.sort();
+    return NextResponse.json({ files });
+  } catch (error: any) {
+    console.error("Error reading test-images directory:", error);
+    return NextResponse.json({ error: error.message }, { status: 500 });
+  }
 }