fix(electron): theme Windows titlebar overlay (#16843)

Co-authored-by: Brendan Allan <brendonovich@outlook.com>

packages/desktop-electron/src/main/ipc.ts

@@ -2,8 +2,9 @@ import { execFile } from "node:child_process"
 import { BrowserWindow, Notification, app, clipboard, dialog, ipcMain, shell } from "electron"
 import type { IpcMainEvent, IpcMainInvokeEvent } from "electron"
 
-import type { InitStep, ServerReadyData, SqliteMigrationProgress, WslConfig } from "../preload/types"
+import type { InitStep, ServerReadyData, SqliteMigrationProgress, TitlebarTheme, WslConfig } from "../preload/types"
 import { getStore } from "./store"
+import { setTitlebar } from "./windows"
 
 type Deps = {
   killSidecar: () => void
@@ -161,6 +162,11 @@ export function registerIpcHandlers(deps: Deps) {
 
   ipcMain.handle("get-zoom-factor", (event: IpcMainInvokeEvent) => event.sender.getZoomFactor())
   ipcMain.handle("set-zoom-factor", (event: IpcMainInvokeEvent, factor: number) => event.sender.setZoomFactor(factor))
+  ipcMain.handle("set-titlebar", (event: IpcMainInvokeEvent, theme: TitlebarTheme) => {
+    const win = BrowserWindow.fromWebContents(event.sender)
+    if (!win) return
+    setTitlebar(win, theme)
+  })
 }
 
 export function sendSqliteMigrationProgress(win: BrowserWindow, progress: SqliteMigrationProgress) {