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>

app/Livewire/Security/ApiTokens.php

@@ -13,10 +13,20 @@ class ApiTokens extends Component
 
     public ?string $description = null;
 
+    public ?int $expiresInDays = 30;
+
     public $tokens = [];
 
     public array $permissions = ['read'];
 
+    public array $expirationOptions = [
+        7 => '7 days',
+        30 => '30 days',
+        60 => '60 days',
+        90 => '90 days',
+        365 => '1 year',
+    ];
+
     public $isApiEnabled;
 
     public bool $canUseRootPermissions = false;
@@ -90,8 +100,10 @@ class ApiTokens extends Component
 
             $this->validate([
                 'description' => 'required|min:3|max:255',
+                'expiresInDays' => 'nullable|integer|in:7,30,60,90,365',
             ]);
-            $token = auth()->user()->createToken($this->description, array_values($this->permissions));
+            $expiresAt = $this->expiresInDays ? now()->addDays($this->expiresInDays) : null;
+            $token = auth()->user()->createToken($this->description, array_values($this->permissions), $expiresAt);
             $this->getTokens();
             session()->flash('token', $token->plainTextToken);
         } catch (\Exception $e) {