feat: Add new conversation command

src/main/kotlin/com/github/fmueller/jarvis/commands/HelpCommand.kt

@@ -10,8 +10,14 @@ class HelpCommand : SlashCommand {
         conversation.addMessage(
             Message(
                 Role.ASSISTANT,
-                "I'm Jarvis, your personal coding assistant. You can ask me anything. To make me work properly," +
-                        " please install and run Ollama locally."
+                """
+                I'm Jarvis, your personal coding assistant. You can ask me anything. To make me work properly, please install and run Ollama locally.
+                
+                Available commands:
+                
+                - ```/help``` or ```/?``` - Shows this help message
+                - ```/new``` - Starts a new conversation
+                """.trimIndent()
             )
         )
         return conversation

src/main/kotlin/com/github/fmueller/jarvis/commands/NewConversationCommand.kt

@@ -0,0 +1,13 @@
+package com.github.fmueller.jarvis.commands
+
+import com.github.fmueller.jarvis.conversation.Conversation
+
+class NewConversationCommand : SlashCommand {
+
+    // as long as we don't have multiple conversations
+    // we can just clear the messages
+    override suspend fun run(conversation: Conversation): Conversation {
+        conversation.clearMessages()
+        return conversation
+    }
+}

src/main/kotlin/com/github/fmueller/jarvis/commands/SlashCommandParser.kt

@@ -10,6 +10,10 @@ class SlashCommandParser(private val ollamaService: OllamaService) {
             return HelpCommand()
         }
 
+        if (trimmedMessage == "/new") {
+            return NewConversationCommand()
+        }
+
         return ChatCommand(ollamaService)
     }
 }

src/main/kotlin/com/github/fmueller/jarvis/conversation/Conversation.kt

@@ -37,6 +37,13 @@ class Conversation(ollamaService: OllamaService) {
         propertyChangeSupport.firePropertyChange("messages", oldMessages, ArrayList(_messages))
     }
 
+    fun clearMessages() {
+        val oldMessages = ArrayList(_messages)
+        _messages.clear()
+        _messages.add(Message(Role.ASSISTANT, "Hello! How can I help you?"))
+        propertyChangeSupport.firePropertyChange("messages", oldMessages, ArrayList(_messages))
+    }
+
     fun addPropertyChangeListener(listener: PropertyChangeListener) {
         propertyChangeSupport.addPropertyChangeListener(listener)
     }