From a96046fa035e6c3b2b5253e53b9f11957e3573d3 Mon Sep 17 00:00:00 2001
From: "dobby-yivi-agent[bot]"
 <275734547+dobby-yivi-agent[bot]@users.noreply.github.com>
Date: Sat, 9 May 2026 14:08:18 +0000
Subject: [PATCH] fix: open Yivi app on mobile decrypt page instead of QR

The /decrypt fallback page rendered a QR code on mobile, which is
useless when the user is already on their phone. Mirror the /download
page's pattern: detect mobile and pass mode=deeplink to YiviQRCode so
it auto-clicks the Yivi-app button and triggers the universal link.

Closes #163
---
 src/lib/components/fallback/Decrypt.svelte | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/lib/components/fallback/Decrypt.svelte b/src/lib/components/fallback/Decrypt.svelte
index 4d98a5e..19c2c03 100644
--- a/src/lib/components/fallback/Decrypt.svelte
+++ b/src/lib/components/fallback/Decrypt.svelte
@@ -14,6 +14,7 @@
 
     import YiviQRCode from '$lib/components/filesharing/YiviQRCode.svelte'
     import Chip from '$lib/components/Chip.svelte'
+    import { isMobile } from '$lib/browser-detect'
 
     const STATES = {
         Uninit: 'Uninit',
@@ -26,6 +27,7 @@
     }
 
     let decryptState = $state(STATES.Uninit)
+    const isMobileDevice = isMobile()
 
     let policies = $state()
     let keylist = $state()
@@ -304,7 +306,11 @@
                     {/each}
                 </div>
             {/if}
-            <YiviQRCode id="yivi-fallback" responsive />
+            <YiviQRCode
+                id="yivi-fallback"
+                responsive
+                mode={isMobileDevice ? 'deeplink' : 'qr'}
+            />
         </div>
     {:else if decryptState === STATES.Decrypting}
         <div class="spinner-wrapper">