* fix(usage): retain last successful data when polls fail
Keep the latest poll outcome separate from its successful snapshot so errors remain visible without discarding known usage or advancing its freshness. Preserve attempt timestamps for response ordering and isolate retained values by scoped login set.
* fix(usage): preserve history through discovery failures
A failed account-store read does not confirm that an account was removed. Retain its existing host mapping until successful discovery replaces it, without carrying mappings across agent launch environments.
* feat(app): streamline sidebar usage and stacked sheets
* fix(app): restore compact sidebar navigation clicks
The close button container emitted box-none through Unistyles as invalid CSS and intercepted New workspace clicks. Let React Native apply click-through behavior at the view boundary. Keep the import journey on its existing New workspace screen and assert only the visible transcript.
* fix(app): cap menu sheets at eighty percent height
Keep long sidebar usage reports recognizably sheet-sized while allowing the content to scroll. Short menu sheets retain dynamic sizing.