[GSSoC'26] fix: rename l1_lock dict to l1_cache to prevent variable overwrite

[vipul674]

🛑 STOP: Assignment & File Scope Check

• I am assigned to this issue.
• I verified that this PR ONLY touches the required files.

📋 PR Summary & Link

• Closes [Bug]: MultiTierLockManager: self.l1_lock dict variable overwritten by threading.RLock() — all get/put/invalidate calls crash with TypeError #2008
• Summary: Renamed self.l1_lock dict to self.l1_cache to prevent the variable from being overwritten by threading.RLock(), which caused TypeError on all dict operations.

🏷️ PR Type

• 🐛 type: bug

✅ Checklist

• My PR has a linked issue (Closes #2008)
• I have pulled the latest main and resolved any conflicts

[vipul674]

@RatLoopz PR ready for review.

Changes:

• src/services/distributed_lock_manager.py: Renamed self.l1_lock dict to self.l1_cache to prevent the variable from being overwritten by threading.RLock().

Note: Issues #2009 and #2010 appear to be already fixed in the current codebase (no stack trace leak in reports.ts, no interactions/check route found).

Testing:

• Verified get(), put(), invalidate(), get_stats() now work correctly with separate cache dict and lock.

Closes #2008

[github-actions]

🎉 Congratulations @vipul674! Your Pull Request "[GSSoC'26] fix: rename l1_lock dict to l1_cache to prevent variable overwrite" has been successfully merged by @dipexplorer.

Thank you for your valuable contribution to SahiDawa! 🇮🇳
If this was for GSSoC 2026, your work is officially merged and valid. Keep up the great work and feel free to claim other open issues. 🚀

Follow us on LinkedIn: https://www.linkedin.com/company/ratloopz/ to get shoutout