GET /tasks search query q is ignored and returns unfiltered tasks

[venkataramasu]

Summary

GET /tasks?q=... does not apply text filtering and returns all tasks.

Intended outcome

Search query q should filter tasks case-insensitively across title and description.

Actual outcome

q=LAUNCH returns all tasks instead of only matching records.

Reproduction steps

1. Install deps: python3 -m pip install -r requirements.txt
2. Run tests: pytest -v tests/test_api.py
3. Observe failure in test_list_tasks_search_filters_title_and_description_case_insensitive

Repro logs

tests/test_api.py::test_list_tasks_search_filters_title_and_description_case_insensitive FAILED

>       assert [task["id"] for task in launch_response.json()] == [1]
E       AssertionError: assert [1, 2, 3, 4] == [1]

Notes

This behavior is validated by HTTP-level tests and currently fails.