Refresh Jellyfin 12 theme

[GilbN]

Refresh Jellyfin 12 menus, controls, dashboard tables, user cards, and permission panels. Adds a local fixture and debugging notes. Dashboard theming requires subfiltering because Jellyfin excludes it from Custom CSS.

Checked all 11 official themes in Firefox 155; dashboard and mobile checks cover Aquamarine, Nord, and Hotline. CSS minification passed. Automated playback failed with and without the theme, so player controls remain unverified.

Fixes #724.

Before	After

All official theme options

Aquamarine

Hotline

Hotpink

Dracula

Dark

Organizr

Space Gray

Overseerr

Plex

Nord

Maroon

[Copilot]

🔵 Needs a closer look

Pin the fixture image digest and ensure generated artifacts are correctly ignored.

Pull request overview

Refreshes Jellyfin 12 theming and adds a reproducible local development fixture.

Changes:

• Updates Jellyfin Material UI and legacy component styling.
• Adds Compose, nginx injection, setup scripts, and synthetic media generation.
• Documents verification coverage and playback limitations.

File summaries

File	Summary	Review notes
dev/README.md	Links the Jellyfin development setup.	—
dev/jellyfin/setup.py	Configures the fixture and sample library.	—
dev/jellyfin/seed-media.py	Generates synthetic movie media.	Moderate (1 vote): pin the image digest and address generated artifacts under dev/artifacts/.
dev/jellyfin/seed-images.cjs	Renders artwork PNGs.	—
dev/jellyfin/README.md	Documents setup, injection, and verification.	Nit (1 vote): use singular “User cards.”
dev/jellyfin/nginx.conf	Injects CSS into dashboard pages.	—
dev/jellyfin/compose.yaml	Defines the local Jellyfin fixture.	Moderate (1 vote): pin the image to the documented digest.
css/base/jellyfin/jellyfin-base.css	Adds Jellyfin 12 theme and dashboard rules.	—

Review details

Suppressed comments (4)

dev/jellyfin/README.md:131

• Use singular “User cards” here; “Users cards” is grammatically incorrect.

Users cards and the permission groups in Profile, Parental Control, and Add

dev/jellyfin/compose.yaml:10

• Please pin this image to the digest documented in dev/jellyfin/README.md:8-9 (jellyfin/jellyfin:12.0@sha256:baba630419915985442f315f08b0cf46d9f4c8a0cc4bd38e94a6d35751dd5ef5). The mutable 12.0 tag can resolve to a different Web/Server build on a later setup, so the fixture would no longer reproduce the documented Jellyfin 12 checks.

    image: jellyfin/jellyfin:12.0

dev/jellyfin/seed-media.py:8

• Use the same pinned image digest as the Compose fixture here. With the mutable 12.0 tag, a later run can generate media with a different Jellyfin FFmpeg build than the server that scans it, undermining the reproducibility promised by the README's recorded digest.

                    '-v', f'{root}:/out', 'jellyfin/jellyfin:12.0',

dev/jellyfin/seed-media.py:3

• This writes the generated media under dev/artifacts, but the repository's ignore rules only cover the root-level /artifacts/ directory (.gitignore:1) and dev/.gitignore has no artifact rule. Running the documented generator therefore leaves the MP4/PNG output untracked, contrary to the README and easy to commit accidentally. Add dev/artifacts/ to the ignore rules or move the output to the ignored root-level path and update the Compose mount.

root=Path(__file__).resolve().parents[1] / 'artifacts/jellyfin/724/media'

• Files reviewed: 8/8 changed files
• Comments generated: 0
• Review effort level: Lite

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