Fix: Prevent infinite loop in gap_analysis preload (#885)

[PRAteek-singHWY]

Summary

This PR fixes an infinite loop bug in the gap_analysis.py background runner that could permanently lock up the application when checking standard pairings.

What Changed

• Added a retry cap: Implemented a MAX_RETRIES = 10 threshold so failing pairs are correctly dropped from the waiting list instead of being retried endlessly.
• Optimized list iteration: Replaced nested loops over string combinations with a direct list of Python tuples (sa, sb) to prevent redundant checking of already succeeded pairs.
• Refined sleep logic: Added an if waiting: check to safely skip the unnecessary 30-second sleep on the final successful loop iteration.

fixes #885

[PRAteek-singHWY]

Hi @Pa04rth, this PR resolves the infinite loop problem reported in #885. The issue has been solved by implementing a 10-retry cap for failing background jobs and optimizing the runner loop with tuples.
Happy to iterate if needed .