Tracking: Resolve #4365 follow-ups and #4373 nightly resilience

[MohabMohie]

Summary

Coordinate fixes for engine follow-ups in #4365 and transient Maven Central failures in #4373.

Tracking

• Engine CI policy clarification and companion property-catalog correction (Follow-ups from nightly-failure fixes #4359/#4361: docs default, memory-CLI batch bug, e2eTests.yml -am inconsistency #4365) — engine PR Fix(ci): harden live launcher retries #4384; companion docs PR Docs: sync Pilot timeout default shafthq.github.io#910
• Shared live-launcher Maven Central retry (Nightly failure: Live Tools Nightly E2E #4373) — engine PR Fix(ci): harden live launcher retries #4384

Both PRs await review. Merge the companion docs PR before engine PR so #4365 closes only after its documentation correction lands.

[MohabMohie]

Implementation is ready for review: #4384 and companion docs PR ShaftHQ/shafthq.github.io#910. No merge authority was granted.