---
model: gpt-5.6-sol
provider: openai
service: opencode
session: ses_0799212ebffe42arY96czXn89F
timestamp: 2026-07-22T00:13:58Z
git_ref: 16f3cd6f
scope: code
substantive: true
raw_file: 20260722T001358Z_16f3cd6f_prompt_io.raw.md
---

## Prompt

Continue the structured backfill phase after the analysis regressions.
Characterize provider exhaustion and genuinely empty frames, then remove
completion paths that can hang after child-task exit.

## Response summary

Removed orphan-prone completion events from the structured nursery flow
and checked empty provider frames before indexing timestamp endpoints.
Added deterministic timeout-bounded regressions for both exit paths.

## Files changed

- `piker/tsp/_history.py` - structured completion and empty-frame fixes
- `tests/test_history_backfill.py` - deterministic exit regressions
- `ai/prompt-io/opencode/20260722T001358Z_16f3cd6f_prompt_io.raw.md`
  - unedited response record
- `ai/prompt-io/opencode/20260722T001358Z_16f3cd6f_prompt_io.md`
  - provenance metadata and response summary

## Human edits

None - generated changes have not yet been edited by the human.