Fan out agent subtasks from items discovered at runtime

Goal

Process a set of subtasks whose count is known only at runtime without hard-coding a fixed branch count.

Steps

1. Define the source and maximum size of the dynamic task list; reject unbounded or unauthorized expansion. [dynamic]
2. Define the parent with @node(rerun_on_resume=True) and schedule each child with await ctx.run_node(child, node_input=item). [dynamic]
3. Call the dynamic scheduling API for each item in the parent node and preserve input/output association while waiting. [dynamic]
4. Configure rerun behavior on resume so parent recovery does not duplicate side-effecting subtasks. [dynamic]

How to verify

Dynamic result count matches the authorized list, each result maps to its input, and resume does not replay side effects unexpectedly.

Troubleshooting

If resume duplicates work, set the documented rerun behavior for dynamic parent nodes and add idempotency protection.