Remove @electron/remote dependency in favor of explicit IPC handlers

[craxal]

Problem

Storage Explorer uses @electron/remote in 6 renderer files to call main-process APIs synchronously:

• app/renderer/index.ts -- remote.getGlobal, remote.getCurrentWindow
• app/renderer/SslCertificateManager.ts -- remote.process.argv, remote.app.getPath, remote.shell.openPath
• app/renderer/MenuManager.ts -- remote.Menu.buildFromTemplate, remote.Menu.setApplicationMenu
• app/renderer/MenuInitializer.ts -- remote.dialog.showMessageBox, remote.getCurrentWindow
• app/renderer/Components/Editors/WebviewProxy.ts -- remote.webContents.fromId, remote.process.argv
• app/renderer/providers/MenuManagerProvider.ts -- remote.Menu.buildFromTemplate, remote.Menu.getApplicationMenu

@electron/remote is the userland successor to the remote module that Electron removed from core in Electron 14. The Electron team marks it as not-recommended due to its use of synchronous IPC and exposure of main-process objects to renderers.

Keeping this dependency also forces us to drag an older transitive subtree along through electron -> @electron/get@2 -> got@11 -> cacheable-request@7 -> keyv@4.5.4, which generates ongoing dependency-hygiene noise.

Fix

Replace each @electron/remote call site with a pair of ipcMain.handle (main) and ipcRenderer.invoke (renderer) handlers. Bundle them into a small renderer-side wrapper module that mirrors the surface area currently consumed from remote.*. The trickiest call site is WebviewProxy.ts's use of remote.webContents.fromId; that requires a main-process proxy that holds the WebContents references and exposes their methods via IPC.

Once the imports of @electron/remote are gone:

1. Remove @electron/remote/main initialization from app/index.ts.
2. Remove the @electron/remote dependency from src/Standalone/package.json.
3. Update gulp/gulpfile.bundle.js and scripts/prune.js references.
4. Run npm run init and confirm the old transitive subtree drops out (npm ls keyv --omit=dev should be empty).

Side benefits

• Removes deprecated @electron/remote package.
• Eliminates synchronous IPC from the renderer (small perceived-perf win and a security improvement).
• Future-proofs against Electron eventually dropping support entirely.