feat(ntfy): dispatch api_key_revoked from ApiKey#revoke!

app/models/api_key.rb

@@ -1,4 +1,6 @@
 class ApiKey < ApplicationRecord
+  include NtfyDispatchable
+
   # Normalize permissions to always be a Hash
   attribute :permissions, :jsonb, default: {}
 
@@ -56,6 +58,12 @@ class ApiKey < ApplicationRecord
   # Revoke API key
   def revoke!
     update!(active: false)
+
+    self.class.dispatch_ntfy("api_key_revoked",
+      title: "API key revoked",
+      message: "API key '#{name}' (#{key_prefix}...) was revoked",
+      priority: 3,
+      tags: ["key", "no_entry"])
   end
 
   # Deactivate expired keys