[codex] Fix series auto-next playback state

[kalzEOS]

Summary

• Fix series auto-next state so the header, current episode, and next-episode countdown follow the actual active media item.
• Resolve canonical series queues for Series and Categories playback launches.
• Keep an existing series Continue Watching entry visible when the next episode is opened for less than the resume threshold.
• Bump the app version to 3.4.8.

Validation

• rtk ./gradlew :app:compileDebugKotlin

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Retry parent resolution after transient lookup failures

This marks every unresolved series entry as attempted even when resolveSeriesParent returns null, and future passes explicitly skip any key with parentResolutionAttempted == true. In a transient failure scenario (e.g., network/cache miss during first render), that permanently disables parent re-resolution for that entry, so the continue-watching card can remain stuck without the canonical series parent until the entry key changes.

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