Synchronize the Release 2.0.0 E2E baseline into develop

Brings the already merged progressive E2E lab and bootstrap work from master into develop for Release 2.0.0. Preserves the existing commits and establishes develop as the target for subsequent work.

Source: 5bcfda5a. The source tree matches the verified !9 (merged) candidate. Native post-merge verification runs in pipeline 29123; fresh local network acceptance passed all 30 cases with cleanup.

The final release promotion will use a separate develop-to-main MR.