- Reverted PR #5751 (issue #5749): continuation rows wrapped the editor
top border onto extra lines, which is unacceptable for the input frame.
- EditorTopBorder is back to a single content/width pair; narrow widths
drop right segments, shrink the path, then drop left segments.
- Added a Usage.orchestration sidecar for provider-side service tokens so Responses/Codex totals and costs stay accurate without inflating visible prompt input/cache buckets.
- Updated Codex/WebSocket usage, session/status aggregates, and usage reporting to preserve orchestration-aware totals.
- Added regressions for OpenAI Responses accounting, Codex WebSocket terminal usage, cost calculation, and session aggregation.
Fixes#4469