Wire the Unicode box-drawing table renderer into the live streaming
path with holdback-aware commit logic, post-stream cell consolidation,
and debounced resize reflow.
Key additions:
- StreamCore: shared bookkeeping deduplicating Stream/PlanStreamController
- Table holdback: fence-aware state machine keeps buffer mutable during table detection
- AgentMarkdownCell: stores raw markdown source, re-renders at any width on demand
- ConsolidateAgentMessage: backward-walk replaces streamed cells with single consolidated cell
- Resize reflow: debounced (75ms) re-render of all transcript cells after terminal resize
This is a follow-up to https://github.com/openai/codex/pull/15922. That
previous PR deleted the old `tui` directory and left the new
`tui_app_server` directory in place. This PR renames `tui_app_server` to
`tui` and fixes up all references.
This is the part 1 of 2 PRs that will delete the `tui` /
`tui_app_server` split. This part simply deletes the existing `tui`
directory and marks the `tui_app_server` feature flag as removed. I left
the `tui_app_server` feature flag in place for now so its presence
doesn't result in an error. It is simply ignored.
Part 2 will rename the `tui_app_server` directory `tui`. I did this as
two parts to reduce visible code churn.
#### Summary
- Emit a “Proposed Command” history cell when an ExecApprovalRequest
arrives (parity with proposed patches).
- Simplify the approval dialog: show only the reason/instructions; move
the command preview into history.
- Make approval/abort decision history concise:
- Single line snippet; if multiline, show first line + " ...".
- Truncate to 80 graphemes with ellipsis for very long commands.
#### Details
- History
- Add `new_proposed_command` to render a header and indented command
preview.
- Use shared `prefix_lines` helper for first/subsequent line prefixes.
- Approval UI
- `UserApprovalWidget` no longer renders the command in the modal; shows
optional `reason` text only.
- Decision history renders an inline, dimmed snippet per rules above.
- Tests (snapshot-based)
- Proposed/decision flow for short command.
- Proposed multi-line + aborted decision snippet with “ ...”.
- Very long one-line command -> truncated snippet with “…”.
- Updated existing exec approval snapshots and test reasons.
<img width="1053" height="704" alt="Screenshot 2025-09-03 at 11 57
35 AM"
src="https://github.com/user-attachments/assets/9ed4c316-9daf-4ac1-80ff-7ae1f481dd10"
/>
after approving:
<img width="1053" height="704" alt="Screenshot 2025-09-03 at 11 58
18 AM"
src="https://github.com/user-attachments/assets/a44e243f-eb9d-42ea-87f4-171b3fb481e7"
/>
rejection:
<img width="1053" height="207" alt="Screenshot 2025-09-03 at 11 58
45 AM"
src="https://github.com/user-attachments/assets/a022664b-ae0e-4b70-a388-509208707934"
/>
big command:
https://github.com/user-attachments/assets/2dd976e5-799f-4af7-9682-a046e66cc494
Wait for newlines, then render markdown on a line by line basis. Word wrap it for the current terminal size and then spit it out line by line into the UI. Also adds tests and fixes some UI regressions.
Felipe Coury