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backlog/archive/tasks/task-48.4 - Add-Jimaku-subtitle-fallback-for-stream-mode.md

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+---
+id: TASK-48.4
+title: Add Jimaku subtitle fallback for stream mode
+status: To Do
+assignee: []
+created_date: '2026-02-14 06:03'
+updated_date: '2026-02-14 08:19'
+labels:
+  - stream
+  - jimaku
+  - subtitles
+dependencies: []
+parent_task_id: TASK-48
+priority: medium
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+When a resolved stream lacks JP/primary-language tracks, fetch subtitles from Jimaku and inject them for playback, overriding non-primary subtitle defaults in streaming mode according to config.
+<!-- SECTION:DESCRIPTION:END -->
+
+## Acceptance Criteria
+<!-- AC:BEGIN -->
+- [ ] #1 Detect missing primary subtitle from stream metadata and trigger Jimaku lookup for matching episode.
+- [ ] #2 Load fetched Jimaku subtitles into playback pipeline and mark them as the primary subtitle track.
+- [ ] #3 Fallback is only used in streaming mode and should not alter subtitle behavior outside streaming.
+<!-- AC:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Superseded by TASK-51. Jimaku fallback for streams deferred along with entire streaming flow.
+<!-- SECTION:NOTES:END -->