From 3d7883ee0162e59a4eb21f8f857b94130b1e16a1 Mon Sep 17 00:00:00 2001
From: JonKazama-Hellion <f.wathling@gmail.com>
Date: Thu, 7 May 2026 15:42:58 +0200
Subject: [PATCH] fix(themes): refresh abgr cache defensively on theme switch

---
 HellionChat/Themes/ThemeRegistry.cs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/HellionChat/Themes/ThemeRegistry.cs b/HellionChat/Themes/ThemeRegistry.cs
index 82ea605..59eb2c5 100644
--- a/HellionChat/Themes/ThemeRegistry.cs
+++ b/HellionChat/Themes/ThemeRegistry.cs
@@ -50,7 +50,14 @@ public sealed class ThemeRegistry
 
     public IEnumerable<Theme> AllCustom() => RefreshCustomCache();
 
-    public void Switch(string slug) => _active = Get(slug);
+    public void Switch(string slug)
+    {
+        var theme = Get(slug);
+        // Defensive — idempotent and cheap, so any future theme source
+        // that forgets the cache fill still ends up with a populated one.
+        theme.RecomputeAbgrCache();
+        _active = theme;
+    }
 
     // 0x80070020 = SHARING_VIOLATION, 0x80070021 = LOCK_VIOLATION. Other
     // IO failures are permanent and get the theme dropped instead of retried.