Tests/mocks

[pepedinho]

This pull request improves the robustness of file operations, enhances test coverage for daemon watch management, and makes minor workflow and utility updates. The main focus is on restoring and updating tests for watch-related daemon operations, ensuring that file removals are safe, and making the CI workflow more flexible.

Testing improvements for daemon watch management:

• Restored and updated previously commented-out async tests in tests/daemon_test.rs for handle_stop_watch, handle_up_watch, handle_rm_watch, and handle_list_watches, using a new build_repo helper and modernized context setup. These tests now more accurately reflect real usage and improve coverage for core daemon operations. [1] [2] [3]

Robustness and utility enhancements:

• Improved rm_metrics_by_id in src/exec/metrics.rs to check if the metrics file exists before attempting to remove it, preventing errors if the file is missing.

Workflow and CI updates:

• Updated the CI workflow in .github/workflows/ci.yml to prepare necessary directories before running tests and included the scheduler_test in the test suite. Also removed the restriction that tests only run on push events. [1] [2]

Minor codebase changes:

• Made handle_stop_watch in src/daemon/server.rs public to allow direct testing and potential reuse.
• Added additional debugging output in tests/scheduler_test.rs to aid in diagnosing pipeline test runs.