Complete Task 10: Persistent Jobs & Scalable Execution

[zahraghulam]

Summary

Implemented Task 10: Persistent Jobs & Scalable Execution.

Changes

• Replaced in-memory job tracking with persistent SQLite storage.
• Added persistent JobManager.
• Saved job status during execution.
• Improved background job execution.
• Added job recovery support.
• Added tests for persistence and recovery.
• Fixed mypy, ruff, and pytest issues.

Testing

• python -m mypy agent api tools utils config --ignore-missing-imports
• python -m ruff check .
• python -m pytest

All tests passed (21/21).