# NousResearch/hermes-agent · Bug fix: compaction tail duplication in archive

## Open now

- Nothing open on GitHub.

These members address a bug where the carried-forward compaction tail is incorrectly marked as compacted, causing it to be duplicated in recall on each compaction cycle. The fixes adjust how the tail is handled and archived during the compaction process.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #99545. Verify it addresses your case.
- **Recommended:** read PR #99545 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-99545`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #86366: \[Bug\]: archive_and_compact marks the carried-forward tail compacted=1, duplicating it in recall once per compaction

## Prior & competing PRs

- **#99545: fix(state): archive carried-forward compaction tail as rewind rows (#86366 salvage of #93160)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/context_compressor.py`, `agent/conversation_compression.py`, `hermes_state.py`, `tests/hermes_state/test_86366_tail_rewind_semantics.py`, `tests/hermes_state/test_86366_watermark_interplay.py`
- **#86367: fix(state): keep the carried-forward tail out of the compacted archive**. closed without merge
  - maintainer direction: category `duplicate_of`; implication `duplicate`; refs `#1`
- **#93160: fix(state): archive carried-forward compaction tail as rewind rows**. closed without merge
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `#99545`

## Fix status

- Merged to main in PR #99545 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-31`.
- Subsystem: `evals/compaction`