Ship production optimization M1-M12.5A: queues, metrics, HTTP observability, and vector search reliability.

Keep similar-ai from tripping the global circuit on a lone URL 502, clamp Qdrant search to 100, and add Server-Timing plus slow-request logging. Studio shared props, Academy S3 exists caching, heat chunking, and Redis/scheduler hygiene stay in this rollout.

tests/Feature/Http/StudioGroupsSharedPropTest.php

@@ -0,0 +1,26 @@
+<?php
+
+use App\Models\Group;
+use App\Models\User;
+use Illuminate\Support\Facades\DB;
+
+it('does not load studio group memberships on non-studio Inertia pages', function () {
+    $user = User::factory()->create();
+
+    Group::factory()->create([
+        'owner_user_id' => $user->id,
+        'status' => Group::LIFECYCLE_ACTIVE,
+    ]);
+
+    $groupQueries = 0;
+    DB::listen(function ($query) use (&$groupQueries): void {
+        $sql = strtolower($query->sql);
+        if (str_contains($sql, 'from `groups`') || str_contains($sql, 'from groups') || str_contains($sql, 'group_members')) {
+            $groupQueries++;
+        }
+    });
+
+    $this->actingAs($user)->get('/leaderboard')->assertOk();
+
+    expect($groupQueries)->toBe(0);
+});