refactor: rename Kopaya to Eryx

Rename the product, runtime surfaces, sidecar projects, docs, tests, and packaging outputs from Kopaya to Eryx across the repository.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/main/windows/createMainWindow.ts

@@ -11,7 +11,7 @@ export function createMainWindow(): BrowserWindow {
     height: 960,
     minWidth: 1120,
     minHeight: 720,
-    title: 'kopaya',
+    title: 'eryx',
     icon: resolveWindowIconPath({
       appPath: app.getAppPath(),
       platform: process.platform,