Remove premature EventTeamTaskAssigned broadcast in executeCreate() that
caused duplicate "assigned to" Telegram notifications. Assignment
notification now only fires at actual dispatch (post-turn, fallback, or
unblocked).
Add TeamNotifyQueue (2s debounce, cap 20) to batch rapid-fire task
notifications per chat — reduces N messages to 1 when leader dispatches
multiple tasks at once. In leader mode this also reduces agent turns
from N to 1.
Also fix: ResetTaskStatus now clears progress_percent/progress_step on
retry, and retry broadcast includes TaskNumber/Subject for correct
notification formatting.
viettranx