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SubMiner/backlog/tasks/task-219 - Restore-streamed-video-progress-in-anime-episodes.md

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---
id: TASK-219
title: 'Restore streamed video progress in anime episodes'
status: In Progress
assignee:
- codex
created_date: '2026-03-22 21:25'
updated_date: '2026-03-22 21:25'
labels:
- stats
- immersion-tracker
- youtube
priority: medium
dependencies: []
references:
- /Users/sudacode/projects/japanese/SubMiner/src/core/services/immersion-tracker/query.ts
- /Users/sudacode/projects/japanese/SubMiner/src/core/services/immersion-tracker-service.ts
- /Users/sudacode/projects/japanese/SubMiner/src/core/services/immersion-tracker/__tests__/query.test.ts
- /Users/sudacode/projects/japanese/SubMiner/src/core/services/immersion-tracker-service.test.ts
---
## Description
<!-- SECTION:DESCRIPTION:BEGIN -->
Episode progress for streamed media can stay at `0%` because some remote sessions persist `ended_media_ms = 0` even when subtitle timing and watch activity clearly advanced, and the anime episode query currently treats `0` as a valid progress checkpoint.
<!-- SECTION:DESCRIPTION:END -->
## Acceptance Criteria
<!-- AC:BEGIN -->
- [ ] #1 Anime episode progress ignores zero-valued session checkpoints and falls back to subtitle/event timing
- [ ] #2 New streamed sessions persist meaningful progress even when playback-position updates are missing or sparse
- [ ] #3 Regression tests cover the zero-checkpoint remote-session case
<!-- AC:END -->