Implement file selection to update SYSTEM_PROMPT_PATH

browse_command.py

@@ -40,6 +40,11 @@ async def button_callback(update: Update, context: ContextTypes.DEFAULT_TYPE) ->
         subdir = data.split(":")[1]
         await query.edit_message_text(f"Navigating to [{subdir}] is not yet implemented.")
     elif data.startswith("file:"):
-        # Handle file selection (for future implementation)
+        # Handle file selection
         file = data.split(":")[1]
-        await query.edit_message_text(f"Viewing contents of {file} is not yet implemented.")
+        file_path = os.path.join('prompts', file)
+        os.environ['SYSTEM_PROMPT_PATH'] = file_path
+        await query.edit_message_text(f"Selected: {file}. SYSTEM_PROMPT_PATH updated.")
+
+        # Optionally, you may want to reload the system prompt here if needed.
+        # bot.system_prompt = bot.load_system_prompt()  # Uncomment if you have access to the bot instance.