- Refactor TestRig.setup to handle only directory creation by default.
- Add TestRig.configure to apply settings and fake responses.
- Update hook integration tests to use the new setup/configure pattern,
avoiding brittle double setup calls.
Fixes several issues preventing integration tests from passing on Windows:
- Replaces brittle inline 'node -e' commands with script files to avoid shell quoting issues in PowerShell.
- Normalizes paths to forward slashes to prevent escape sequence misinterpretation in generated scripts.
- Ensures rig.setup() is called before accessing rig.testDir to properly initialize test environment.
- Corrects hooks settings structure (enabled moved to hooksConfig) to match schema validation.
