feat(branding): replace ASCII fox banner with embedded image

HellionChat/Branding/FoxBannerTexture.cs

@@ -0,0 +1,22 @@
+using Dalamud.Interface.Textures;
+
+namespace HellionChat.Branding;
+
+// UI sibling of HellionForgeAscii.FoxMini: the embedded Hellion Forge fox
+// banner PNG. Uses ITextureProvider.GetFromManifestResource, a "Get" shared
+// texture, so Dalamud owns the cache and lifetime. No manual dispose, no async
+// handling in the plugin. Static to mirror HellionForgeAscii (zero injectable
+// deps; Plugin.TextureProvider is a static [PluginService]).
+internal static class FoxBannerTexture
+{
+    private const string ResourceName = "HellionChat.Branding.fox-banner.png";
+
+    // Resolved fresh on every access. Dalamud keeps the shared texture cached
+    // internally and decodes it asynchronously, so GetWrapOrDefault() returns
+    // null for the first few frames until the decode finishes.
+    public static ISharedImmediateTexture Shared =>
+        Plugin.TextureProvider.GetFromManifestResource(
+            typeof(FoxBannerTexture).Assembly,
+            ResourceName
+        );
+}