tools: add send-test-push for one-shot Asynq push verification

Tiny CLI that enqueues a notification:send_push task into Redis. The
worker picks it up and routes through internal/push/Client.SendToAll —
which is exactly the path used by HandleSmartReminder, HandleDailyDigest,
and any other in-process push, so a successful round-trip here proves the
production push pipeline end-to-end without waiting for the next cron tick.

Requires Redis to be reachable. Easiest path:

  kubectl -n honeydue port-forward svc/redis 6379:6379

  go run ./cmd/send-test-push --user-id 6 --title "..." --message "..."

The worker logs `Sending push notification...` followed by the APNs
batch result; failure modes (BadDeviceToken, circuit breaker, etc.)
surface as the same error_message rows the existing notif-diag tool
already reports on.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -10,6 +10,7 @@ bin/
 /admin
 /admin-reset
 /notif-diag
+/send-test-push
 !admin/
 *.exe
 *.exe~

cmd/send-test-push/main.go

@@ -0,0 +1,59 @@
+// send-test-push enqueues a one-shot Asynq push notification task. The worker
+// picks it up and routes it through internal/push/Client.SendToAll, which now
+// hits APNs production. Verifies end-to-end that push delivery is working
+// without waiting for the next cron tick.
+//
+// Usage:
+//
+//	# Port-forward Redis from the cluster first:
+//	kubectl --kubeconfig=~/.kube/honeydue-k3s.yaml -n honeydue port-forward svc/redis 6379:6379
+//
+//	# Then in another shell:
+//	go run ./cmd/send-test-push --user-id 6 --title "Test" --message "Hello from notif-diag"
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strconv"
+
+	"github.com/hibiken/asynq"
+
+	"github.com/treytartt/honeydue-api/internal/worker/jobs"
+)
+
+func main() {
+	userID := flag.Uint("user-id", 0, "Target auth_user.id (required)")
+	title := flag.String("title", "Test push", "Notification title")
+	message := flag.String("message", "Hello from send-test-push", "Notification body")
+	redisAddr := flag.String("redis", "localhost:6379", "Redis host:port (use kubectl port-forward to reach the in-cluster redis)")
+	flag.Parse()
+
+	if *userID == 0 {
+		fmt.Fprintln(os.Stderr, "--user-id is required")
+		os.Exit(2)
+	}
+
+	task, err := jobs.NewSendPushTask(*userID, *title, *message, map[string]string{
+		"type":    "test",
+		"user_id": strconv.FormatUint(uint64(*userID), 10),
+	})
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "build task: %v\n", err)
+		os.Exit(1)
+	}
+
+	client := asynq.NewClient(asynq.RedisClientOpt{Addr: *redisAddr})
+	defer func() { _ = client.Close() }()
+
+	info, err := client.Enqueue(task, asynq.Queue("default"), asynq.MaxRetry(3))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "enqueue: %v\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Printf("Enqueued task: id=%s queue=%s type=%s\n", info.ID, info.Queue, info.Type)
+	fmt.Printf("Tail worker logs to see the result:\n")
+	fmt.Printf("  kubectl --kubeconfig=~/.kube/honeydue-k3s.yaml -n honeydue logs deploy/worker --tail=20 -f\n")
+}