From 065762d2730e14f2b1835603acd99c741da84f81 Mon Sep 17 00:00:00 2001
From: Hiren Kangad <hir.012612@gmail.com>
Date: Tue, 10 Mar 2026 19:46:17 +0530
Subject: [PATCH] fix: synthesize readable filename for rejected clipboard
 pastes

Rejected clipboard items now show as "pasted-item.tiff" instead
of raw MIME subtype, so the upload panel entry is readable.
---
 frontend/src/canvas/image-drop.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/frontend/src/canvas/image-drop.ts b/frontend/src/canvas/image-drop.ts
index d9b7dc1..265b10f 100644
--- a/frontend/src/canvas/image-drop.ts
+++ b/frontend/src/canvas/image-drop.ts
@@ -299,9 +299,10 @@ export function setupPaste(
 
       // Reject unsupported media types with feedback
       if (!ALLOWED_MIME_TYPES.has(item.type)) {
+        const ext = extFromMime(item.type);
         uploads?.addRejected(
-          item.type.split('/')[1] || 'unknown',
-          `Unsupported format: ${extFromMime(item.type)}`,
+          `pasted-item${ext.startsWith('.') ? ext : '.' + ext}`,
+          `Unsupported format: ${ext}`,
         );
         continue;
       }