DEV: Prefer ENV key for seeded models

app/models/llm_model.rb

@@ -98,6 +98,15 @@ def seeded?
     id < 0
   end
 
+  def api_key
+    if seeded?
+      env_key = "DISCOURSE_AI_SEEDED_LLM_API_KEY_#{id.abs}"
+      ENV[env_key] || super
+    else
+      super
+    end
+  end
+
   private
 
   def required_provider_params

spec/models/llm_model_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+RSpec.describe LlmModel do
+  describe "api_key" do
+    fab!(:llm_model) { Fabricate(:seeded_model) }
+
+    before { ENV["DISCOURSE_AI_SEEDED_LLM_API_KEY_2"] = "blabla" }
+
+    it "should use environment variable over database value if seeded LLM" do
+      expect(llm_model.api_key).to eq("blabla")
+    end
+  end
+end