chore(desktop-client): gate dev-only debug paths in packaged builds

Wrap the network observer, renderer-devtools proxy (both the main-side
ipc handler registration and the preload-side response listener), and
the auto-open-devtools triggers behind !app.isPackaged so packaged
builds don't ship debugging side channels. Add a tiny console-guard
imported first in renderer/main.ts that no-ops console.* in
import.meta.env.PROD so a packaged build stays quiet.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/renderer/console-guard.ts

@@ -0,0 +1,8 @@
+if (import.meta.env.PROD) {
+  const noop = () => undefined;
+  console.log = noop;
+  console.info = noop;
+  console.warn = noop;
+  console.error = noop;
+  console.debug = noop;
+}

apps/desktop-client/src/renderer/main.ts

@@ -1,3 +1,5 @@
+import "./console-guard";
+
 import { createApp } from "vue";
 
 import App from "./App.vue";