Honor CTest script env override before container run

[wyli]

Summary

• render HOLOSCAN_CLI_CTEST_SCRIPT as a literal ctest -S argument before entering app containers
• keep the existing in-container Python fallback only when no explicit CLI/env override is configured
• add helper-level and command-level regression tests for the env override path

Tests

• PYTHONPATH=src PYTHONDONTWRITEBYTECODE=1 python -m pytest -q -o addopts='' -p no:cacheprovider tests/unit/test_container_recursion.py tests/unit/test_lifecycle_commands.py
• PYTHONPATH=src PYTHONDONTWRITEBYTECODE=1 python -m pytest -q -o addopts='' -p no:cacheprovider tests/unit
• PYTHONPATH=src RUFF_CACHE_DIR=/tmp/holoscan-cli-ruff-cache python -m ruff check src/holoscan_cli/commands/test_cmd.py tests/unit/test_container_recursion.py tests/unit/test_lifecycle_commands.py
• python -m black --check src/holoscan_cli/commands/test_cmd.py tests/unit/test_container_recursion.py tests/unit/test_lifecycle_commands.py
• python -m isort --check-only src/holoscan_cli/commands/test_cmd.py tests/unit/test_container_recursion.py tests/unit/test_lifecycle_commands.py
• PRE_COMMIT_HOME=/tmp/holoscan-cli-pre-commit-cache python -m pre_commit run --show-diff-on-failure --files src/holoscan_cli/commands/test_cmd.py tests/unit/test_container_recursion.py tests/unit/test_lifecycle_commands.py

AI-assisted: Created with Codex/GPT at the user's request.

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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