Remove the single-in_progress cap from todo_write execute validation and
the durable-log invariant so a task list can mirror genuinely parallel
work (concurrent subagents, background commands). Update the tool
description to instruct marking every actively worked task in_progress,
refresh the tool catalog and keyless snapshot expected outputs, and
record the decision in a new Agent Note superseding the original cap.
Master's i18n batches added Chinese counterparts to ~50 docs this PR
edits in English. Bring each zh side along with the minimal edits
covering the en diff (recorded-hash diffs, not re-translations),
reunite the stream-workflow-progress pair under rejected/ with its
manifest entry, re-record all pairing hashes, and regenerate the
event/persistence/tool catalogs and doc graphs over the merged tree.
