feat(ntfy): add SendNtfyNotificationJob for async dispatch with retry

app/jobs/send_ntfy_notification_job.rb

@@ -0,0 +1,23 @@
+require "my_smsa_pio/notifications/ntfy/publisher"
+
+class SendNtfyNotificationJob < ApplicationJob
+  queue_as :notifications
+  retry_on StandardError, wait: :exponentially_longer, attempts: 3
+
+  def perform(admin_id, event_type, title:, message:, priority: 3, tags: [], click: nil)
+    admin = AdminUser.find_by(id: admin_id)
+    return unless admin
+    return unless admin.ntfy_configured?
+
+    MySmsaPio::Notifications::Ntfy::Publisher.new(admin).publish(
+      title: title,
+      message: message,
+      priority: priority,
+      tags: tags,
+      click: click
+    )
+  rescue StandardError => e
+    Rails.logger.error("SendNtfyNotificationJob failed for admin #{admin_id}: #{e.message}")
+    raise
+  end
+end

test/jobs/send_ntfy_notification_job_test.rb

@@ -0,0 +1,49 @@
+require "test_helper"
+
+class SendNtfyNotificationJobTest < ActiveJob::TestCase
+  setup do
+    @admin = AdminUser.create!(
+      name: "Job Admin", email: "jobadmin@example.com",
+      password: "password123",
+      ntfy_topic: "job-topic", ntfy_token: "tk_job",
+      ntfy_enabled: true,
+      ntfy_server_url: "https://ntfy.example.com"
+    )
+
+    stub_request(:post, "https://ntfy.example.com/job-topic")
+      .to_return(status: 200, body: "", headers: {})
+  end
+
+  test "perform calls Publisher with provided params" do
+    SendNtfyNotificationJob.perform_now(
+      @admin.id,
+      "gateway_offline",
+      title: "Gateway offline",
+      message: "gw-001 went offline",
+      priority: 4,
+      tags: ["rotating_light"],
+      click: "https://app.example.com/admin/gateways"
+    )
+
+    assert_requested :post, "https://ntfy.example.com/job-topic",
+      body: hash_including("title" => "Gateway offline", "priority" => 4)
+  end
+
+  test "perform does nothing if admin not found" do
+    assert_nothing_raised do
+      SendNtfyNotificationJob.perform_now(999999, "gateway_offline",
+        title: "X", message: "Y", priority: 3, tags: [])
+    end
+  end
+
+  test "perform does nothing if admin ntfy not configured" do
+    unconfigured = AdminUser.create!(
+      name: "UC", email: "uc@example.com", password: "password123"
+    )
+
+    SendNtfyNotificationJob.perform_now(unconfigured.id, "gateway_offline",
+      title: "X", message: "Y", priority: 3, tags: [])
+
+    assert_not_requested :post, "https://ntfy.example.com/job-topic"
+  end
+end