This commit addresses several issues in the testing framework:
- Corrected a malformed URL in the mock response data in `pkg/github/github.go`.
- Fixed a bug in the mock HTTP client in `pkg/mocks/http.go` where the response body was being exhausted after the first read. The client now returns a deep copy of the response for each call.
- Refactored the environment variable handling in `TDD/collect_commands_test.go` to use `t.Setenv`, ensuring proper cleanup after the test.
a8dc55aba5