[hugojosealmeida]

Summary

Respect OpenBSD pathname limitations in LTbasic2 and enable autotools CI tests.

Changes

• Pass existing dialect flags to LTbasic2.
• Retain descriptor, device, and inode checks while exempting OpenBSD/NetBSD from pathname validation.
• Run make check in OpenBSD CI, printing logs and failing on test failures.

Verification

• Assertion fixtures: pass, including incorrect descriptor/device/inode rejection.
• Native Darwin LTbasic2: pass.
• Workflow YAML and shell syntax: pass.
• Native OpenBSD execution, CI will validate it.

---

This PR is AI Assisted.

Closes #380