Whether concurrent active tasks are legitimate depends on runtime concurrency the tool cannot observe, but whether a deployment's agents ever fan out is knowable at composition time. `allowParallelInProgress` (default true) therefore replaces the hardcoded policy: the flag moves the model-facing instruction and the accepted input together, so a deployment running strictly sequential agents can restore the single-active discipline from cordis.yml. The durable-log invariant does not follow the flag. A log written while parallel work was allowed must still replay after a deployment tightens the policy, so the invariant stays silent on the active count.
todo/ — todo / planning capability family
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The model-facing todo tool. A single product package — there is no interface/implementation seam here, because the list is single-owner session state (one agent session owns its own list), not a swappable capability.
| Package | Role | ctx key |
|---|---|---|
tool-todo/ |
Model-facing todo_write tool; writes the whole list to the session log (todo/write) |
(registers on ctx.tools) |
The list lives on the event-sourced session log (SessionEventMap['todo/write'], owned by dsh-session); this package is the thin consumer that appends the snapshot. UIs such as the TUI app and the host/client runtime render the durable list from session events.