feat(f6.9): consolidate act and report documents and simplify follow-up

api-v3/src/inspection-reports/inspection-document-images.ts

@@ -0,0 +1,14 @@
+import sharp from 'sharp';
+
+// PDFKit and the Word image renderer accept JPEG/PNG. The source bytes and
+// their recorded SHA-256 remain untouched; WebP is only converted for display.
+export async function renderableInspectionImage(source: Buffer): Promise<Buffer> {
+  const isWebp = source.length >= 12
+    && source.subarray(0, 4).toString('ascii') === 'RIFF'
+    && source.subarray(8, 12).toString('ascii') === 'WEBP';
+  if (!isWebp) return source;
+  return sharp(source)
+    .resize({ width: 1600, height: 1200, fit: 'inside', withoutEnlargement: true })
+    .png()
+    .toBuffer();
+}