General-purpose subagents

Agents should be able to delegate work to temporary, general-purpose subagents—not only predefined visual specialists.

The main agent should decide when and how to use subagents within the room’s permissions and context boundaries. Users should also be able to request delegation explicitly.

Use cases include parallel research, exploration (keeps the room’s context window focused), adversarial review, and evaluating alternative approaches. Results should return to the originating conversation.

Start by reviewing the existing predefined visual-specialist delegation flow and how room permissions and context boundaries are represented. Done means agents and users can request temporary general-purpose subagents, with parallel research or review results returned to the originating conversation while respecting those boundaries.

Written by the indexing model from the issue text.