feat(security): support expiration on API tokens with warning notifications

Add optional expiration to personal API tokens. Users pick a duration
(1/7/30/60/90 days or Never) at creation time. Expired tokens are
rejected by Sanctum, pruned hourly by sanctum:prune-expired, and a
team notification fires ~24h before expiry so owners can rotate
before API calls start failing.

- ApiTokens Livewire component stores expires_at from expiresInDays
- Rework issued-tokens UI from card grid to table (matches other views)
- New ApiTokenExpirationWarningJob scheduled hourly (idempotent via RateLimiter)
- New ApiTokenExpiringNotification (email/discord/telegram/slack/pushover)
- api_token_expiring added to alwaysSendEvents so users cannot silence
  expiry warnings from the per-event notification toggle UI
- sanctum:prune-expired cadence moved from daily to hourly

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/Feature/ApiTokenExpirationTest.php

@@ -0,0 +1,81 @@
+<?php
+
+use App\Livewire\Security\ApiTokens;
+use App\Models\Team;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    $this->team = Team::factory()->create();
+    $this->user = User::factory()->create();
+    $this->team->members()->attach($this->user->id, ['role' => 'owner']);
+
+    session(['currentTeam' => $this->team]);
+    $this->actingAs($this->user);
+});
+
+describe('token creation with expiration', function () {
+    test('livewire component stores expires_at when expiresInDays set', function () {
+        Livewire::test(ApiTokens::class)
+            ->set('description', 'test-token')
+            ->set('expiresInDays', 7)
+            ->set('permissions', ['read'])
+            ->call('addNewToken')
+            ->assertHasNoErrors();
+
+        $token = $this->user->tokens()->latest()->first();
+
+        expect($token)->not->toBeNull()
+            ->and($token->expires_at)->not->toBeNull()
+            ->and($token->expires_at->diffInDays(now()))->toBeGreaterThanOrEqual(6)
+            ->and($token->expires_at->diffInDays(now()))->toBeLessThanOrEqual(7);
+    });
+
+    test('livewire component stores null expires_at when expiresInDays null (Never)', function () {
+        Livewire::test(ApiTokens::class)
+            ->set('description', 'never-token')
+            ->set('expiresInDays', null)
+            ->set('permissions', ['read'])
+            ->call('addNewToken')
+            ->assertHasNoErrors();
+
+        $token = $this->user->tokens()->latest()->first();
+
+        expect($token)->not->toBeNull()
+            ->and($token->expires_at)->toBeNull();
+    });
+
+    test('livewire component rejects invalid expiresInDays value', function () {
+        Livewire::test(ApiTokens::class)
+            ->set('description', 'bad-token')
+            ->set('expiresInDays', 42)
+            ->set('permissions', ['read'])
+            ->call('addNewToken')
+            ->assertHasErrors('expiresInDays');
+    });
+});
+
+describe('expired token rejected on API', function () {
+    test('request with expired token returns 401', function () {
+        $token = $this->user->createToken('expired', ['read'], now()->subDay());
+
+        $response = $this->withHeaders([
+            'Authorization' => 'Bearer '.$token->plainTextToken,
+        ])->getJson('/api/v1/projects');
+
+        $response->assertStatus(401);
+    });
+
+    test('request with non-expired token works', function () {
+        $token = $this->user->createToken('valid', ['read'], now()->addDay());
+
+        $response = $this->withHeaders([
+            'Authorization' => 'Bearer '.$token->plainTextToken,
+        ])->getJson('/api/v1/projects');
+
+        $response->assertStatus(200);
+    });
+});