chore: pin merged Bamboo and Lotus Actor sources (#791)

[bigduu]

Summary

• Pin the merged Bamboo #791 Actor follow-action baseline from Bamboo-agent PR #1473.
• Pin the merged Lotus Next actor snapshot reconnect fix from lotus-next PR chore: bump lotus-next for MCP JSON import #212.
• This is a source-pointer update; the release train's locked artifact identities remain a separate accepted-artifact decision.

Testing

• Verified the Bamboo revision is the current origin/dev merge commit and the Lotus Next revision is the current origin/main merge commit.
• Verified the staged diff contains only two mode-160000 gitlinks, and git diff --cached --check passed.
• Bamboo PR #1473 passed its required exact-head Test check. Lotus Next PR chore: bump lotus-next for MCP JSON import #212 passed its source type-check and 82 focused tests.
• Validate Submodule Pointers and Require Submodule Notes (PR) must pass on this root PR.

Submodule Updates

• bamboo: a9cd0fa3e38da800301e7b9173b48fddd2026db2 -> 2293c7698c60172f2087b9c18eedd9a3f2678563. Pin the protected dev merge of the #791 canonical SubAgent/Actor follow actions.
• lotus-next: cbe2ab077dcae0ecb2d5b33813bd51b24f8cbbdc -> 6545e70ef8d3210463ada9b8fb3c59677f8740da. Pin the merged Actor snapshot recovery across WebSocket reconnects.

Screenshots

No visual layout changes; Lotus Next #212 changes snapshot recovery behavior.

Refs bigduu/Bamboo-agent#791.