[Bug]: Next episode fails to play or selects wrong provider stream when bingeGroup is missing

[Abhinav2k]

Pre-flight checks

• I searched existing issues and this is not a duplicate.
• I can reproduce this on the latest desktop release or latest main build.
• This issue is limited to a single bug (not multiple unrelated problems).
• This is not a source/stream-specific error (the issue happens regardless of which source is used).

App version / commit

Dev (commit cf54c14)

Install method

GitHub Release desktop installer/package

Platform

Windows (desktop)

Desktop hardware

Windows PC

OS version

Windows 11

Area (tag)

Next Episode / Auto-play

Bug description

When playing a series episode and selecting a working video stream from a specific addon/plugin (e.g. "4KHDHub - FSL 1080p"), clicking "Next Episode" at the end of playback fails to play the next episode or auto-selects a non-working stream from a different provider.

Investigation shows that next-episode selection logic solely checked behaviorHints.bingeGroup. When scrapers or stream providers do not populate bingeGroup, manual mode aborts playback entirely, and auto-play fallback picks FIRST_STREAM across all installed addons (often selecting an incompatible or non-functional stream from a different provider) rather than continuing with the stream name/provider the user was actively watching.

Steps to reproduce

1. Open a TV series in Nuvio Desktop.
2. Select a stream from a provider that does not set bingeGroup (e.g. a specific addon stream like "4KHDHub - FSL 1080p").
3. Play the episode until completion, or click the "Next episode" button when prompted.
4. Observe that the next episode either does not play at all, or selects a stream from an entirely different provider that fails.

Expected behavior

Next episode auto-play should look for a stream with the same title/name from the active provider/addon (prioritizing matching quality/subtitles). If found, it should seamlessly play that stream. If no same-source stream is found, it should fall back to the standard auto-play scanning algorithm.

Actual behavior

Playback aborts in manual mode, or picks the first stream from an arbitrary addon in auto-play mode, failing playback.

Frequency

Always

Did this work before?

No, it never worked

Media details (optional)

No response

Logs (required for crash reports)

Anything else? (optional)

No response