fix: Simplify template processing to only handle template variables

app.py

@@ -89,12 +89,8 @@ with open("prompts.yaml", 'r') as stream:
         if isinstance(value, str):
             logger.debug(f"Processing template string: {value[:100]}...")
             try:
-                # First, ensure we have valid template syntax
+                # Only process if template syntax is present
                 if '{{' in value or '{%' in value:
-                    # Pre-process the template to ensure it's valid Jinja2
-                    # Replace any non-template content with a comment
-                    value = re.sub(r'(?<!{{|{%)([^{}]+)(?!}}|%})', lambda m: '{# ' + m.group(1) + ' #}', value)
-                    
                     # Ensure template variables are properly formatted
                     value = value.replace('{{', '{{ ').replace('}}', ' }}')
                     value = value.replace('{%', '{% ').replace('%}', ' %}')
@@ -174,8 +170,9 @@ with open("prompts.yaml", 'r') as stream:
     # Pre-process the system prompt template
     if 'system_prompt' in prompt_templates and 'text' in prompt_templates['system_prompt']:
         system_prompt = prompt_templates['system_prompt']['text']
-        # Convert non-template content to comments
-        system_prompt = re.sub(r'(?<!{{|{%)([^{}]+)(?!}}|%})', lambda m: '{# ' + m.group(1) + ' #}', system_prompt)
+        # Only process template variables, leave other text unchanged
+        system_prompt = re.sub(r'{{([^{}]+)}}', lambda m: '{{ ' + m.group(1).strip() + ' }}', system_prompt)
+        system_prompt = re.sub(r'{%([^{}]+)%}', lambda m: '{% ' + m.group(1).strip() + ' %}', system_prompt)
         prompt_templates['system_prompt']['text'] = system_prompt
         logger.debug("Pre-processed system prompt template")