chore: pin Bamboo and Lotus Next subagent integration

[bigduu]

Summary

• Pin Bamboo to 350b55e2bee8f435b614bd7114e11598436ba726, the merged dev squash commit from Bamboo #1474.
• Pin Lotus Next to 96a56afec49f5e60b021460a35d0422df231ae65, the merged commit from Lotus Next #213.
• Deliver the cumulative #791 SubAgent runtime and frontend slice through one focused Zenith pointer update. The #791 umbrella remains open for later generic remote placement and recovery follow-ups.

Test plan

• Verified both source PRs are merged and their merge commits exactly match these gitlinks.
• Bamboo #1474 required Test passed at exact head c0261edc7c3989889cc9c77cccaf61ba36cd9dc5; local focused actor, receipt, prompt migration, and real CLI integration tests passed.
• Lotus Next chore: adopt Bamboo and Lotus Next chat improvements #213 Node 22 and Node 24 checks and local affected tests passed.
• git diff --cached --check passed; staged diff contains only the two intended 160000 gitlinks.

Screenshots

Not applicable; this PR changes only submodule pointers.

Submodule Updates

• bamboo: advance from 2293c769 to merged dev commit 350b55e2 to include the cumulative #791 durable SubAgent runtime, Host receipt and parent wait fixes, compact model guidance, and prompt transcript preservation.
• lotus-next: advance from 6545e70 to merged main commit 96a56afe to include the matching Lotus Next SubAgent surface. Both source revisions are already merged and validated in their own repositories.