fix: replace --in-process-gpu with SwiftShader to fix blank webviews on Linux

The --in-process-gpu flag broke <webview> guest compositing entirely,
leaving connection views blank on all Linux configurations. SwiftShader
(--use-gl=angle --use-angle=swiftshader) keeps the GPU process
out-of-process (required for webview compositing) while using software
rendering to avoid the driver-level /dev/shm crashes that originally
motivated the in-process flag.

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.0.20] - 2026-05-07
+
+### Fixed
+
+- **Blank Webview on Linux.** Replaced the `--in-process-gpu` Chromium flag with SwiftShader software rendering (`--use-gl=angle --use-angle=swiftshader`). The in-process GPU flag broke `<webview>` guest compositing entirely, leaving connection views blank on all Linux configurations. SwiftShader keeps the GPU process out-of-process (required for webview compositing) while avoiding driver-level crashes (#178).
+
 ## [0.0.19] - 2026-05-06
 
 ### Fixed

package.json

@@ -1,6 +1,6 @@
 {
   "name": "open-webui",
-  "version": "0.0.19",
+  "version": "0.0.20",
   "license": "AGPL-3.0",
   "description": "Open WebUI Desktop",
   "main": "./out/main/index.js",