fix(sentry): drop Redis connect-time failures from the container-restart race

app/Infrastructure/Sentry/BeforeSendFilter.php

@@ -6,6 +6,7 @@
 use ErrorException;
 use Illuminate\Database\QueryException;
 use Illuminate\Queue\MaxAttemptsExceededException;
+use Predis\Connection\Resource\Exception\StreamInitException;
 use Sentry\Event;
 use Sentry\EventHint;
 use Symfony\Component\Console\Exception\RuntimeException as SymfonyConsoleRuntimeException;
@@ -52,6 +53,29 @@ public static function filter(Event $event, ?EventHint $hint = null): ?Event
             return null;
         }
 
+        // Redis unreachable at CONNECT time — the same container-restart race as
+        // 08006 above, for the other datastore (deploy --force-recreate, redis
+        // recreate, DNS not yet resolving). Bursty, not chronic: the 100 most
+        // recent events of #957 fell into three windows (2026-07-21, -07-22,
+        // -08-03) with days of silence between, and 808 events since 2026-07-01
+        // buried the rest of the fleetq project.
+        //
+        // Scoped to StreamInitException on purpose — Predis throws it only from
+        // StreamFactory during stream init, so a read/write error on an already
+        // established connection (a different defect class) still reports.
+        // A SUSTAINED outage stays visible: HealthController pings Redis and
+        // flips /api/v1/health to 503 `degraded`.
+        if ($e instanceof StreamInitException) {
+            return null;
+        }
+
+        // Same restart race reaching the /metrics scrape — the prometheus client
+        // wraps the Redis connect failure in its own storage exception, so the
+        // class check above can't catch it. (#1082)
+        if (str_contains($msg, "Can't connect to Redis server")) {
+            return null;
+        }
+
         // Anthropic auth_error / Prism 401 — FallbackAiGateway::isAuthError already
         // routes around it without recording a circuit-breaker failure.
         if (str_contains($msg, 'authentication_error') && str_contains($msg, 'x-api-key')) {

tests/Unit/Infrastructure/Sentry/BeforeSendFilterWebhookTest.php

@@ -5,6 +5,10 @@
 use App\Domain\Shared\Exceptions\AiAccessUnavailableException;
 use App\Infrastructure\Sentry\BeforeSendFilter;
 use PHPUnit\Framework\Attributes\Test;
+use Predis\Connection\ConnectionException;
+use Predis\Connection\Parameters;
+use Predis\Connection\Resource\Exception\StreamInitException;
+use Predis\Connection\StreamConnection;
 use RuntimeException;
 use Sentry\Event;
 use Sentry\EventHint;
@@ -82,6 +86,48 @@ public function it_drops_ai_access_unavailable_from_queue_workers(): void
         $this->assertNull($result);
     }
 
+    #[Test]
+    public function it_drops_redis_connect_failures_from_the_restart_race(): void
+    {
+        $result = BeforeSendFilter::filter(
+            Event::createEvent(),
+            $this->hintFor(new StreamInitException('Connection refused [tcp://agent-fleet-redis:6379]')),
+        );
+
+        $this->assertNull($result);
+    }
+
+    #[Test]
+    public function it_drops_prometheus_redis_connect_failures(): void
+    {
+        $result = BeforeSendFilter::filter(
+            Event::createEvent(),
+            $this->hintFor(new RuntimeException(
+                "Can't connect to Redis server. php_network_getaddresses: getaddrinfo for agent-fleet-redis failed",
+            )),
+        );
+
+        $this->assertNull($result);
+    }
+
+    #[Test]
+    public function it_keeps_redis_read_errors_on_established_connections(): void
+    {
+        // The restart-race filter must not swallow this class — a read error on
+        // an open connection is a different defect (fixed separately in 16c2b9f2).
+        $event = Event::createEvent();
+
+        $result = BeforeSendFilter::filter(
+            $event,
+            $this->hintFor(new ConnectionException(
+                new StreamConnection(new Parameters(['host' => 'agent-fleet-redis'])),
+                'read error on connection to agent-fleet-redis:6379',
+            )),
+        );
+
+        $this->assertSame($event, $result);
+    }
+
     private function hintFor(\Throwable $e): EventHint
     {
         $hint = new EventHint;