feat: quote detail modal, SteelERP favicon, and notification navigation

- Pipeline page: clicking a supplier quote card opens a modal with full
  line-item breakdown, lead time, payment terms, notes, awarded status,
  and a Compare All Quotes button
- Eager-load supplierQuotes.supplier and supplierQuotes.items in pipeline
  controller to avoid N+1 on the modal data
- Browser tab now shows SteelERP first (SteelERP — Page Name)
- Added SVG favicon matching the sidebar blue-square logo
- Notification clicks now navigate to the relevant page via a dedicated
  /notifications/{id}/go route that marks only that notification as read

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

routes/web.php

@@ -49,11 +49,18 @@ Route::middleware(['auth', 'verified'])->group(function () {
         'items' => auth()->user()->unreadNotifications()->latest()->take(10)->get()->map(fn($n) => [
             'id'      => $n->id,
             'message' => $n->data['message'] ?? '',
-            'url'     => $n->data['url'] ?? null,
+            'go_url'  => route('notifications.go', $n->id),
             'ago'     => $n->created_at->diffForHumans(),
         ]),
     ]))->name('notifications.unread');
 
+    Route::get('/notifications/{id}/go', function (string $id) {
+        $n = auth()->user()->notifications()->findOrFail($id);
+        $n->markAsRead();
+        $dest = $n->data['url'] ?? route('dashboard');
+        return redirect($dest);
+    })->name('notifications.go');
+
     Route::post('/notifications/read-all', fn() => response()->json(
         tap(auth()->user()->unreadNotifications()->update(['read_at' => now()]))
     ))->name('notifications.read-all');