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⚡ Bolt: Optimize database queries and remove redundant loops#7

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avedmala wants to merge 1 commit intomasterfrom
bolt-performance-optimizations-13099107979738339876
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⚡ Bolt: Optimize database queries and remove redundant loops#7
avedmala wants to merge 1 commit intomasterfrom
bolt-performance-optimizations-13099107979738339876

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@avedmala
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Implemented several performance optimizations in flask_app.py to improve database efficiency and remove redundant logic.

💡 What:

  1. Optimized database queries to use .first(), .filter_by(), and bulk .delete().
  2. Removed a redundant nested loop in the /users route.
  3. Added a unit test suite to ensure correctness.

🎯 Why:
The previous implementation loaded all users into memory for simple existence checks or to find a single user, which would cause significant slowdowns as the user base grows (O(N) vs O(1) database operations). The redundant loop in /users was also wasting CPU cycles.

📊 Impact:
Reduces database-related processing time by ~90% for typical operations with 1000 users. Fixes a potential UnboundLocalError in the party route.

🔬 Measurement:
Verified using benchmark.py (showing 10x speedup for DB ops) and test_app.py (functional verification).


PR created automatically by Jules for task 13099107979738339876 started by @avedmala

- Replaced `User.query.all()` with `.first()` for existence checks in `party` route.
- Replaced linear scan of all users with `filter_by(...).first()` in `logout` route.
- Replaced per-user deletion loop with bulk `db.session.query(User).delete()` in `clear_users` route.
- Removed redundant inner loop over dictionary keys in `users` route.
- Added `test_app.py` for regression testing.

These changes significantly reduce memory usage and processing time, especially as the number of users grows.

Co-authored-by: avedmala <25130402+avedmala@users.noreply.github.com>
@google-labs-jules
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