# CI Health Agent Task Log

**Agent:** ci-health-agent
**Cadence:** daily
**Date:** 2026-02-24
**Status:** Completed

## Summary

Identified and fixed a flaky test in `tests/hashtag-preferences.test.mjs` that was causing intermittent CI failures.

## Details

### 1. Flake Identification
- **Test:** `load applies same-timestamp updates deterministically with overlap fetch` in `tests/hashtag-preferences.test.mjs`.
- **Symptom:** Assertion error where `expected: ['oldpref']` but `actual: ['newpref']` on the first load.
- **Root Cause:** The test mocked `nostrClient.fetchListIncrementally` using a `callCount` variable to determine when to return a newer event ("cipher-new"). The test author assumed `hashtagPreferences.load()` triggers a single fetch call. However, `load()` triggers concurrent fetches for multiple kinds (30015 and 30005), causing `callCount` to increment twice during the *first* load operation. This caused the mock to return the "future" event prematurely.

### 2. Resolution
- **Fix:** Modified the mock implementation to condition the return of the new event on `params.since > 0` (which correctly distinguishes the incremental update fetch from the initial load) rather than `callCount`.
- **Verification:** Updated test assertions to correctly verify that incremental fetching occurs, handling the multi-call nature of the implementation. Ran `node tests/hashtag-preferences.test.mjs` and confirmed it passes consistently.

## Artifacts
- Created `artifacts/ci-flakes-20260224.md` with failure details.