Run2 docx custom conditional logic

When a template uses custom markers (not Jinja2) for conditional logic, use the following manual detection strategy:

1. State Tracking: Maintain a boolean flag (e.g., is_inside_block) and a list to collect paragraphs belonging to a conditional section.
2. Detection: Iterate through all paragraphs in the document.
   • If a paragraph contains {{IF_KEY}}, start tracking.
   • If a paragraph contains {{END_IF_KEY}}, stop tracking and process the collected block.
3. Content Manipulation:
   • Condition Met (e.g., RELOCATION_PACKAGE == "Yes"): Simply find the paragraphs containing the markers and use .text.replace() to remove the {{IF_...}} and {{END_IF_...}} strings, leaving the content in between intact.
   • Condition Not Met: Identify all paragraphs starting from the one containing the IF marker through the one containing the END_IF marker. To "remove" them in python-docx, you can clear their text (p.text = "") or use internal element removal methods (though clearing text is often sufficient for basic templates).
4. Note on Tables: If conditional markers wrap rows within a table, you must apply this logic while iterating through table.rows, checking the text content of the cells.

Example logic:

def handle_conditionals(paragraphs, condition_key, should_keep):
    active = False
    for p in paragraphs:
        if f"{{{{IF_{condition_key}}}}}" in p.text:
            active = True
            p.text = p.text.replace(f"{{{{IF_{condition_key}}}}}", "")
        
        if active and not should_keep:
            # If the condition is false, clear text inside the block
            # Note: The END_IF check happens below to ensure the end marker is also cleared
            pass 

        if f"{{{{END_IF_{condition_key}}}}}" in p.text:
            p.text = p.text.replace(f"{{{{END_IF_{condition_key}}}}}", "")
            active = False
        
        if active and not should_keep:
             p.text = "" # Clear content if condition fails