Transition: Assembly to LZA Test Environment

**Describe the Issue**
Prepare for the LZA transition by repurposing the Assembly test environment to LZA.

**Additional Context**
Add any other context, attachments or screenshots

**Acceptance Criteria**

- [ ] evaluate effort, steps, dependancies
- [ ] Plan the work
- [ ] Break down into following tickets

Start by evaluating the effort, steps, and dependencies involved in repurposing the Assembly test environment for LZA. Produce a work plan and break the transition into follow-up tickets; completion means the plan and ticket breakdown are agreed and recorded.

Written by the indexing model from the issue text.