From 9a64c0698f191f5a2102ae8503d6e94199529872 Mon Sep 17 00:00:00 2001
From: Marcel <marcel@familienarchiv>
Date: Fri, 17 Apr 2026 15:55:42 +0200
Subject: [PATCH] fix(pdf): make isLoaded reactive so nav buttons are enabled
 after load

pdfDoc was a plain variable (not \$state), so renderer.isLoaded had no
reactive dependencies in Svelte 5. PdfControls received isLoaded=false
permanently, keeping the next-page button disabled while zoom buttons
(which have no disabled attribute) still worked.

Fix: derive isLoaded from totalPages (\$state) via totalPages > 0.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 frontend/src/lib/hooks/usePdfRenderer.svelte.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend/src/lib/hooks/usePdfRenderer.svelte.ts b/frontend/src/lib/hooks/usePdfRenderer.svelte.ts
index 87b37f8c..e7242a0c 100644
--- a/frontend/src/lib/hooks/usePdfRenderer.svelte.ts
+++ b/frontend/src/lib/hooks/usePdfRenderer.svelte.ts
@@ -183,7 +183,7 @@ export function createPdfRenderer() {
 			return error;
 		},
 		get isLoaded() {
-			return pdfDoc !== null;
+			return totalPages > 0;
 		},
 		get pdfjsReady() {
 			return pdfjsReady;