Add subscription tiers, notification preferences, and logging infrastructure

- Add database migrations for plans, subscriptions, notification preferences, and notification log tables
- Implement DispatchUserNotificationJob to handle channel resolution, daily limits, and logging (sent/tier_restricted/daily_limit)
- Add SendScheduledWhatsAppJob for scheduled notification delivery
- Create PlanFeatures service to resolve tier capabilities, check daily limits, and validate fuel

tests/Feature/Tiers/PlanResourceTest.php

@@ -0,0 +1,78 @@
+<?php
+
+use App\Filament\Resources\Plans\Pages\EditPlan;
+use App\Filament\Resources\Plans\Pages\ListPlans;
+use App\Models\Plan;
+use App\Models\User;
+use Filament\Actions\DeleteAction;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function (): void {
+    $this->artisan('db:seed', ['--class' => 'PlanSeeder']);
+    $this->actingAs(User::factory()->create(['is_admin' => true]));
+});
+
+// ─── ListPlans ────────────────────────────────────────────────────────────────
+
+it('lists all four plans', function (): void {
+    Livewire::test(ListPlans::class)
+        ->assertCanSeeTableRecords(Plan::all());
+});
+
+it('has no create button on the list page', function (): void {
+    Livewire::test(ListPlans::class)
+        ->assertActionDoesNotExist('create');
+});
+
+// ─── EditPlan — no delete ─────────────────────────────────────────────────────
+
+it('has no delete action on the edit page', function (): void {
+    $plan = Plan::where('name', 'basic')->first();
+
+    Livewire::test(EditPlan::class, ['record' => $plan->id])
+        ->assertActionDoesNotExist(DeleteAction::class);
+});
+
+// ─── EditPlan — saves features correctly ─────────────────────────────────────
+
+it('saves email frequency on edit', function (): void {
+    $plan = Plan::where('name', 'free')->first();
+
+    Livewire::test(EditPlan::class, ['record' => $plan->id])
+        ->fillForm([
+            'features.email.frequency' => 'daily',
+        ])
+        ->call('save')
+        ->assertHasNoFormErrors();
+
+    expect($plan->fresh()->features['email']['frequency'])->toBe('daily');
+});
+
+it('saves sms daily limit on edit', function (): void {
+    $plan = Plan::where('name', 'plus')->first();
+
+    Livewire::test(EditPlan::class, ['record' => $plan->id])
+        ->fillForm([
+            'features.sms.daily_limit' => 3,
+        ])
+        ->call('save')
+        ->assertHasNoFormErrors();
+
+    expect($plan->fresh()->features['sms']['daily_limit'])->toBe(3);
+});
+
+it('saves null fuel type max for pro (unlimited)', function (): void {
+    $plan = Plan::where('name', 'pro')->first();
+
+    Livewire::test(EditPlan::class, ['record' => $plan->id])
+        ->fillForm([
+            'features.fuel_types.max' => null,
+        ])
+        ->call('save')
+        ->assertHasNoFormErrors();
+
+    expect($plan->fresh()->features['fuel_types']['max'])->toBeNull();
+});