feat(client): system tray on Windows, and a clearer tray icon

The tray's Start/Stop already drove nodeService.status/stop/restart, which
had full win32 branches for both startup modes from the Node page work --
so enabling it on Windows is widening two platform gates (the `tray`
capability in preload.js, the window:minimize-to-tray handler in main.js),
not new logic.

Replaced the tray icon: the previous white chevron-in-a-box read as an
envelope at tray size. New icon is a small "M" drawn as mesh nodes and
edges, echoing the app icon's own motif, in the brand blue instead of
plain white so it stays legible on both light and dark taskbars/panels.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/packages/meshbay-client/src/preload.js b/packages/meshbay-client/src/preload.js
index 1aa16e5..b390bfb 100644
--- a/packages/meshbay-client/src/preload.js
+++ b/packages/meshbay-client/src/preload.js
@@ -41,10 +41,10 @@ contextBridge.exposeInMainWorld('meshbay', {
     localFolders: true,
     nativeSave: true,
     lanCast: true,
-    // Linux only for now -- Windows is being done on that OS. Declared per
-    // platform rather than always: a button that hides the window somewhere the
-    // desktop shows no indicator would hide it for good.
-    tray: process.platform === 'linux',
+    // Linux and Windows have a tray to hide into; declared per platform
+    // rather than always, so the button never appears somewhere the desktop
+    // shows no indicator, which would hide the window for good.
+    tray: process.platform === 'linux' || process.platform === 'win32',
   },
 
   // Labels are passed in because the main process has no i18n; see main.js.