tweaks to open llm implementation

testing mistral at the moment and did the minimum to get it going

config/locales/client.en.yml

@@ -88,6 +88,7 @@ en:
           gpt-3:
             5-turbo: "GPT-3.5"
           claude-2: "Claude 2"
+          open-llm: "Open LLM"
 
     review:
       types:

config/settings.yml

@@ -228,6 +228,7 @@ discourse_ai:
       - gpt-3.5-turbo
       - gpt-4
       - claude-2
+      - open-llm
   ai_bot_enabled_chat_commands:
     type: list
     default: "categories|google|image|search|tags|time|read"

lib/modules/ai_bot/open_llm_bot.rb

@@ -42,10 +42,6 @@ module DiscourseAi
 
       private
 
-      def populate_functions(partial, function)
-        # nothing to do here, no proper function support quite yet
-      end
-
       def build_message(poster_username, content, system: false, function: nil)
         { bot: poster_username == bot_user.username, username: poster_username, content: content }
       end
@@ -69,7 +65,7 @@ module DiscourseAi
           prompt,
           model_for,
           temperature: 0.4,
-          max_tokens: 600,
+          max_tokens: 1000,
           &blk
         )
       end