---
model: gpt-6 (exact variant not exposed)
service: codex
session: fsp-session-recovery-takeover-20260915
timestamp: 2026-09-15T15:52:29Z
git_ref: fadab3d2
scope: code
substantive: true
raw_file: 20260915T155229Z_fadab3d2_prompt_io.raw.md
---

## Prompt

Recover the interrupted OpenCode FSP session and take over its ongoing
work. The recovered child instruction records human authorization for
the minimal EMA omitted-default fix followed by a complete commit plan.

## Response summary

Removed the eager Numba signature that rejected Python's omitted
default arguments. Preserved nopython/nogil compilation and numerical
behavior. Added nine numerical regressions and verified all 38 focused
FSP cases. Rebuilt planning artifacts separately from production code.

## Files changed

- `piker/fsp/_momo.py`: drop the eager signature and unused type imports.
- `tests/test_fsp_momo.py`: omitted/explicit argument and seed coverage.

## Human edits

The human identified the omitted-default limitation in the earlier
session, authorized the minimal lazy-specialization approach, and
requested this takeover after OpenCode failed. Existing source changes
and older OpenCode provenance were retained. The new fix remains
unstaged and awaits human review; no acceptance is inferred.