feat: enable Android Share Sheet for graphics & files; handle direct PDF/image clipping

src/app/share/route.ts

@@ -321,11 +321,18 @@ export async function POST(req: NextRequest) {
         appendedMediaHtml += `<p><audio controls src="/api/attachments/${att.id}"></audio></p>\n`;
       } else if (mimeType.startsWith('video/')) {
         appendedMediaHtml += `<p><video controls src="/api/attachments/${att.id}" style="max-width: 100%; border-radius: 8px;"></video></p>\n`;
+      } else if (mimeType === 'application/pdf' || filename.toLowerCase().endsWith('.pdf')) {
+        appendedMediaHtml += `<p><a href="/api/attachments/${att.id}" target="_blank" rel="noopener noreferrer">📄 View PDF: ${filename}</a></p>\n`;
       } else {
         appendedMediaHtml += `<p><a href="/api/attachments/${att.id}" target="_blank" rel="noopener noreferrer">📎 ${filename}</a></p>\n`;
       }
     }
 
+    const firstImgAtt = await prisma.attachment.findFirst({
+      where: { noteId: note.id, mimeType: { startsWith: 'image/' } },
+      select: { id: true },
+    });
+
     if (appendedMediaHtml) {
       const combinedHtml = `${finalHtml ? `${finalHtml}\n` : ''}${appendedMediaHtml}`;
       await prisma.note.update({
@@ -334,6 +341,7 @@ export async function POST(req: NextRequest) {
           contentHtml: combinedHtml,
           contentText: stripHtmlToText(combinedHtml),
           excerpt: makeExcerpt(stripHtmlToText(combinedHtml)),
+          ...(firstImgAtt ? { thumbnailUrl: `/api/attachments/${firstImgAtt.id}` } : {}),
         },
       });
     }