Twenty-three comments arrived as twenty-three flat blocks, so the agent made
twenty-three todos and ground through them one at a time. They now arrive
grouped by where they sit in the page, with a line telling the agent to work
the groups rather than the comments.
The renderer groups on structure, not meaning. Whether a comment is a UI nit
or a functional bug is a judgment only the model can make, and prose-matching
it here would be wrong constantly; which pins share a DOM subtree is something
the selector already answers. That split is also the one that makes parallel
work safe — grouping by theme instead ("all the spacing ones") cuts across the
same components and puts several workers in the same files, so the guidance
says to hand out whole groups and never to regroup by theme.
Grouping compares ancestor paths, so a heading and a paragraph in one card
stay together instead of becoming two singletons. Depth is derived rather than
tuned: descend the shared prefix until it stops being shared, then sub-split
any group still holding more than a third of the batch — without that pass a
normal page buries every section under `main`. Batches under four comments,
and batches that all land in one region, stay flat.
Grouping is advice in the prompt, never an action: the renderer does not spawn
or delegate anything. That stays the agent's call.
06a4f4ab31