⚡ Bolt: Pre-compile regular expressions in app.py

[aafre]

💡 What: Pre-compiled regular expressions at the module level in app.py for LaTeX escaping, Markdown link conversion, Markdown formatting rules, and escaping stray characters.
🎯 Why: These regular expressions were being dynamically compiled and executed repeatedly inside text processing routines (escape_latex, _convert_markdown_links, _apply_markdown_formatting, _escape_remaining_latex_chars). Pre-compiling them avoids redundant compilation overhead during PDF generation and text formatting processes.
📊 Impact: Reduces processing time by roughly ~33% for these text formatting functions, contributing to faster document generation.
🔬 Measurement: Verified using timeit on the affected functions with a sample input, showing a decrease from 0.44s to 0.29s for 10000 iterations.

---

PR created automatically by Jules for task 3695568031932429799 started by @aafre

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.

[gemini-code-assist]

Code Review

This pull request focuses on performance optimizations and code style improvements. Key changes include pre-compiling regular expressions used in text processing and LaTeX escaping functions to reduce overhead, as documented in the new entry in .Jules/bolt.md. Additionally, the codebase underwent significant formatting updates, including the reorganization of imports and the wrapping of long lines to improve readability. I have no further feedback to provide as no review comments were present.

[aafre]

Closing duplicate — the most recent version of this change is PR #542.

[google-labs-jules]

Closing duplicate — the most recent version of this change is PR #542.

Understood. Acknowledging that this work is now obsolete due to duplicate PR #542, and stopping work on this task.