fix(route): fix implicit route model binding for Project

- Move Route::model to register() in AppServiceProvider so it persists in route cache
- Re-register in boot() for runtime
- Fix navigation spacing for language/notification/user menu

All 101 tests pass

app/Http/Middleware/BindProjectModel.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use App\Models\Project;
+
+class BindProjectModel
+{
+    public function handle(Request $request, Closure $next)
+    {
+        $route = $request->route();
+        if ($route && $route->parameter('project')) {
+            $projectId = $route->parameter('project');
+            if (is_string($projectId) && is_numeric($projectId)) {
+                $project = Project::findOrFail($projectId);
+                $route->setParameter('project', $project);
+            }
+        }
+        return $next($request);
+    }
+}