Agent Instance v0.21.3

Agent Instance 0.21.3

Attention now asks whether an input needs consideration, including a correction,
changed dependency, or answer that needs no public acknowledgment. The shorter
policy distinguishes the evaluated agent from the sender and addressee, and
checks whether later conversation already resolved the need. The provider gets
ID references to the evaluated agent and original trigger while the source
exchange remains intact and ordered.

The existing decision provider, confidence handling, admission budgets, tickets,
source-delivery records, and tool permissions are unchanged. An uncertain input
can still receive bounded review; the engine decides whether to speak or act.
This release neither grants new work authority nor replays a previously handled
source. Attention quality remains model-dependent; isolated evaluations do not
establish sustained conversation quality for every installation.

Original sessions, selected engines, credentials, and installation settings are
preserved. Upgrades use the enrolled connection lifecycle.

Packages are promoted unchanged from the successful platform checks for tested commit de877a313d7334e4903cfa827d26734ecb44fc6e. Its source tree is identical to merged commit d85870257491ccee99f988dc5eeae0ea2b01fedd. Change review.