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Felipe Coury
f46b53bd85
## Why Reasoning summaries can contain an empty HTML comment placeholder, `<!-- -->`, when a generated summary part has no prose. The TUI treated that placeholder as visible summary content, so it leaked into both the completed conversation history and persisted transcript. Multi-part empty summaries could also leave later generated status headings visible as orphaned transcript content. ## What - Strip the empty reasoning-summary placeholder at the shared `ReasoningSummaryCell` boundary. - Suppress the cell when removing placeholders leaves only generated bold status headings. - Cover the multi-part placeholder-only shape with a rendering regression test for both normal history and transcript output. ## How to Test 1. Start Codex TUI with reasoning summaries visible, for example with `hide_agent_reasoning = false` and `model_reasoning_summary = "detailed"`. 2. Run a turn that receives an empty generated reasoning-summary part. 3. Confirm that the in-progress status heading may appear while the turn is running, but the completed history and transcript contain neither literal `<!-- -->` tokens nor orphaned reasoning headings. 4. Confirm that a reasoning summary with actual prose still renders normally. The model output is nondeterministic, so the targeted regression covers the exact multi-part placeholder shape from the report: - `just test -p codex-tui reasoning_summary_block_hides_empty_html_comment_parts`