fix: plan tasks after initial exploration

README.md

@@ -47,7 +47,7 @@ pi remove npm:pi-todo-herdr
 
 ## Usage
 
-For large, multi-stage work, the extension instructs Pi to call `set_tasks` before exploration as the only tool in the first batch. Smaller work remains untracked. Pi then updates task states at each real transition instead of reconstructing progress at the end.
+For work with three or more distinct steps, the extension instructs Pi to explore enough to understand the scope, then call `set_tasks` before implementation. Smaller work remains untracked. Pi then updates task states at each real transition instead of reconstructing progress at the end.
 
 After automatic or manual context compaction, the extension sends one short hidden reminder only when unfinished tasks exist. Pi calls `list_task` to recover the authoritative current IDs and statuses; the full tree is not injected on every model call.