Differentiate Billing from Wallet with storage usage breakdown.

Billing lists per-transfer storage costs and monthly estimates; Wallet stays focused on balance and top-up.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/Feature/BillingPageTest.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Models\Transfer;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Str;
+use Tests\TestCase;
+
+class BillingPageTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        Http::preventStrayRequests();
+    }
+
+    private function user(): User
+    {
+        return User::create(['public_id' => (string) Str::uuid(), 'name' => 'A', 'email' => 'a+'.uniqid().'@x.com']);
+    }
+
+    private function fakeBillingApi(string $publicId): void
+    {
+        $base = rtrim((string) config('billing.api_url'), '/');
+
+        Http::fake([
+            $base.'/balance*' => Http::response(['balance_minor' => 50000]),
+            $base.'/service-ledger*' => Http::response([
+                'spent_minor' => 1200,
+                'credited_minor' => 0,
+                'net_minor' => -1200,
+            ]),
+        ]);
+    }
+
+    public function test_billing_page_shows_storage_breakdown(): void
+    {
+        $user = $this->user();
+        $this->fakeBillingApi($user->public_id);
+
+        Transfer::create([
+            'user_id' => $user->id,
+            'title' => 'Client deliverables',
+            'retention_days' => 30,
+            'expires_at' => now()->addDays(30),
+            'status' => Transfer::STATUS_ACTIVE,
+            'storage_bytes' => 2 * 1024 * 1024 * 1024,
+        ]);
+
+        $this->actingAs($user)
+            ->get(route('account.billing'))
+            ->assertOk()
+            ->assertSee('Active transfer storage')
+            ->assertSee('Client deliverables')
+            ->assertSee('Monthly estimate')
+            ->assertDontSee('Add funds');
+    }
+
+    public function test_wallet_page_focuses_on_balance(): void
+    {
+        $user = $this->user();
+        $this->fakeBillingApi($user->public_id);
+
+        $this->actingAs($user)
+            ->get(route('account.wallet'))
+            ->assertOk()
+            ->assertSee('Add funds')
+            ->assertDontSee('Active transfer storage');
+    }
+}