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Fix Python 3.12 SyntaxError caused by JS regex escape sequences (#1934)

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### Fix Python 3.12 SyntaxError caused by invalid escape sequences

#### Problem
Importing `cognee` on Python 3.12+ raises:

SyntaxError: invalid escape sequence '\s'

This occurs because JavaScript regex patterns (e.g. `/\s+/g`) are
embedded
inside a regular Python triple-quoted string, which Python 3.12 strictly
validates.

#### Solution
Converted the HTML template string to a raw string (`r"""`) so Python
does not
interpret JavaScript regex escape sequences.

#### Files Changed
- cognee/modules/visualization/cognee_network_visualization.py

Fixes #1929


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
* Improved stability of the network visualization module through
enhanced HTML template handling.

<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>

<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Vasilije 2025-12-23 14:23:25 +01:00 • committed by GitHub
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cognee/modules/visualization/cognee_network_visualization.py
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@ -92,7 +92,7 @@ async def cognee_network_visualization(graph_data, destination_file_path: str =
}
links_list.append(link_data)
html_template = """
html_template = r"""
<!DOCTYPE html>
<html>
<head>