---
id: TASK-244
title: 'Assess and address PR #36 latest CodeRabbit review round 2'
status: Done
assignee: []
created_date: '2026-03-29 08:09'
updated_date: '2026-03-29 08:10'
labels:
  - code-review
  - pr-36
dependencies: []
references:
  - 'https://github.com/ksyasuda/SubMiner/pull/36'
priority: high
ordinal: 3610
---

## Description

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Inspect the newest CodeRabbit review round on PR #36, verify the actionable comment against the current branch, implement the confirmed fix, and verify the touched path.
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## Acceptance Criteria
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- [ ] #1 The actionable review comment is implemented or explicitly deferred with rationale.
- [ ] #2 Touched path is verified with the smallest sufficient test lane.
- [ ] #3 Current PR feedback is reduced to resolved or intentionally deferred suggestions.
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## Final Summary

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Addressed the actionable latest CodeRabbit comment on PR #36. `src/core/services/immersion-tracker/maintenance.ts` now skips retention deletions when a window is disabled with `Infinity`, so `toDbMs(...)` is only called for finite retention values. Added a regression test in `maintenance.test.ts` that verifies disabled retention windows preserve session events, telemetry, and sessions while returning zero deletions.
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