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SubMiner/backlog/tasks/task-219 - Restore-streamed-video-progress-in-anime-episodes.md
sudacode 3502cdc607 chore: archive completed backlog tasks and update ordinals
- Move ~35 completed tasks from backlog/tasks/ to backlog/completed/
- Add ordinal fields to remaining in-progress task files
- Mark task-255 (playlist browser modal) as Done with final notes
2026-03-31 12:38:27 -07:00

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---
id: TASK-219
title: Restore streamed video progress in anime episodes
status: Done
assignee:
- codex
created_date: '2026-03-22 21:25'
updated_date: '2026-03-31 19:37'
labels:
- stats
- immersion-tracker
- youtube
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
priority: medium
ordinal: 178500
---
## 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 -->
- [x] #1 Anime episode progress ignores zero-valued session checkpoints and falls back to subtitle/event timing
- [x] #2 New streamed sessions persist meaningful progress even when playback-position updates are missing or sparse
- [x] #3 Regression tests cover the zero-checkpoint remote-session case
<!-- AC:END -->
## Final Summary
<!-- SECTION:FINAL_SUMMARY:BEGIN -->
Restored anime episode progress handling for streamed sessions by ignoring zero-valued `ended_media_ms` checkpoints and falling back to subtitle/event timing, with regression coverage for the remote-session zero-checkpoint case.
<!-- SECTION:FINAL_SUMMARY:END -->