MoonSync - The Final Frontier (for now)

[mattsigal]

Pull Request

Summary

Add a dedicated Playback subtab panel under User Defaults in the admin config page for configuring and pushing default Video Playback, Audio Playback, Subtitle Preferences, and Automation & Queue settings to client profiles. Note: Only customization based preferences are included (nothing hardware related) and only settings that were available on Core, Roku, and Smart-TV. Also, this builds off of PR #218 so please review that one first.

Related Issues

Link related issues or tickets separated by commas.

• Closes #
• Fixes #
• Related to MoonSync: The Revamp #218

Type of Change

• Bug fix
• New feature
• Refactor
• Performance improvement
• API / endpoint change
• Settings schema change
• Documentation update
• Build/CI change
• Other (describe):

Area

• Settings sync / profiles
• Admin defaults / config page
• Ratings (MDBList / TMDB)
• Notifications / Push (FCM / relay)
• Seerr integration
• Games / Emulators
• Custom home rows
• Web Client (Go to Moonfin-Core repo)
• Other / shared

Changes Made

List the key changes included in this PR.

• Added #playback subtab button and subtab panel container to configPage.html across Jellyfin and Emby backends.
• Added admin controls for Video Playback: Show Description on Pause (showDescriptionOnPause), Resume Rewind (resumeSubtractDuration), Unpause Rewind (unpauseRewindDuration), Skip Back Length (skipBackLength), Skip Forward Length (skipForwardLength).
• Added admin controls for Audio Playback: Default Audio Language (defaultAudioLanguage) dropdown selector, Prefer Default Audio Track (preferDefaultAudioTrack), Prefer Audio Description (preferAudioDescription).
• Added admin controls for Subtitle Preferences: Subtitle Mode (subtitleMode), Default Subtitle Language (defaultSubtitleLanguage) dropdown selector, Prefer SDH Subtitles (preferSdhSubtitles), Text Color (subtitlesTextColor), Background Color (subtitlesBackgroundColor), Text Size (subtitlesTextSize).
• Added admin controls for Automation & Queue: Cinema Mode (cinemaModeEnabled), Skip Intros and Outros (introAction/outroAction), Media Segment Countdown (nextUpCountdownStyle), Autoplay Next Episode (autoplayNextEpisode), Next Up Timeout (nextUpTimeout), Replace Skip Outro with Next Up Display (replaceSkipOutroWithNextUp), Still Watching Prompt (stillWatchingBehavior).
• Added profile load and save binding handlers in configPage.html (Jellyfin) and moonfin.js (Emby).

Client Impact

Does this need matching changes in a client repo (Core, Smart-TV, Roku)?

• No client changes needed
• Companion client PR(s) required, linked here:
• New setting keys added. List each key and confirm it matches the client key exactly, including casing:

Compatibility

• Change to the settings profile is additive only, no renamed or removed properties
• New properties use the same type the client sends (a client bool maps to bool?, an int to int?)
• Migration added for any renamed or removed settings
• Older clients still work, unknown fields are ignored and no keys were removed

Testing

Describe how this change was tested.

• Built the plugin and deployed to a Jellyfin server
• Verified against a live client (which one:) Windows Desktop
• Manual testing completed
• Not tested (explain why):

Test Steps

1. Built backend plugin via build.ps1 in C:\Moonbase\Jellyfin.
2. Deployed Moonfin.Server.dll to Synology NAS and verified server restart (status: running).
3. Verified dropdown option parity for Resume Rewind, Unpause Rewind, and language selections against in-app dialogs.

Screenshots (if applicable)

Include config page screenshots or request/response samples where relevant.

Checklist

• Code builds successfully
• Code follows project style and conventions
• No unnecessary commented-out code
• No new warnings introduced
• Any new setting keys match the client-side keys exactly

[github-actions]

Build Successful

The plugin compiled successfully against .NET 8 / Jellyfin 10.10.0.

Property	Value
Commit	a59c3fe
Workflow	Build #269

[mattsigal]

Removed subtitle customizations since Roku can't handle them.